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Publication numberUS3713539 A
Publication typeGrant
Publication dateJan 30, 1973
Filing dateMay 26, 1971
Priority dateMay 26, 1971
Publication numberUS 3713539 A, US 3713539A, US-A-3713539, US3713539 A, US3713539A
InventorsD Cooper, C Thompson
Original AssigneeD Cooper, C Thompson
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Strainer device for use in drainage receptacles
US 3713539 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

Elite tees Thompson et a1.

STRAINER DEVICE FOR USE IN DRAlNAGE RECEPTACLES Inventors: C. Ames Thompson, 5617 North 22nd Drive, Phoenix, Ariz. 85015;

Douglas J. Cooper, 7820 East Culver Street, Scottsdale, Ariz. 85257 Filed: May 26, 1971 Appl. No.: 147,059

US. Cl ..210/164 Int. Cl. ..E03f l/00 Field of Search ..210/163-166, 169, 210/447, 451, 455, 463, 464, 469; 4/190;

m 3,7135% 1 Jan. 30, 1973 [56] 9 References Cited UNITED sTA'rE's PATENTS 2,246,012 1/1941 Sanders .210/163 1,635,361 7/1927 Luson ..4/190 664,945 1/1901 Quion t ..4/190 414,240 11/1889 Morton t ..210/163 2,689,017 9/1954 Schmid ..210/166 X Primary Examiner-Reuben Friedman Assistant Examiner-T. A. Granger Attorney-Herbert E. Haynes, Jr.

[57] ABSTRACT A strainer device is disclosed for use in floor sinks, roof drains, and other similar drainage receptacles. The strainer device is removably mounted adjacent to the upper portion of the drainage receptacle and is adapted to captively retain foreign material entering therein.

6 Claims, 6 Drawing Figures PAIENIEDJMO I973 3.713.539

INVENTORS 6'- ME5 7HOM 50/Vv4 0- 062.145 J. COOPE STRAINER DEVICE FOR USE IN DRAINAGE RECEITACLES BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to strainers and more particularly to a strainer mechanism for use in a drainage receptacle.

2. Description of the Prior Art Drainage control receptacles such as floor sinks, roof drains, and the like have long been employed in areas having heavy drainage requirements. By way of example, floor sinks are in common use in kitchens of restaurants where the need for hygenic conditions necessitates the use of large quantities of water for the cleansing of equipment and food. This type of an area also generates large quantities of debris such as vegetable trimmings, food packaging materials, and other foreign objects. The obvious result of this combination being repeated clogging of the drainage receptacle.

A particular prior art strainer in common usage in drainage receptacles is a hollow hemispherical structure having a plurality of slots formed therethrough. This hemispherical structure is placed over the outlet located in the bottom of the receptacle. When the receptacle is located in an area such as under a counter or work table, the hemispherical structure alone may be employed. If the drainage receptacle is located in an area of heavy foot traffic, such as the middle of a kitchen floor, a perforated plate is removably mounted flush with the upper surface of the receptacle to provide a continuous walking surface. The perforated cover plate will stop the passage of comparatively large foreign objects and allow intermediate and small foreign objects to enter the receptacle. The hemispherical structure will in turn allow passage of only the water and the small foreign objects, thus retaining the intermediate sized foreign objects within the drainage receptacle.

When a drainage receptacle employing this particular prior art strainer arrangement becomes clogged, the cover plate is removed and the clogging material must be removed by hand so that the foreign material will not enter the drainage system. Therefore, it may be seen that cleaning of the drainage receptacles has heretofore been a very undesirable and time consuming operation.

In view of the foregoing a need exists for a new and useful strainer device for use in drainage receptacles which captively retains foreign material entering into the drainage receptacle to allow easy and rapid cleaning thereof.

SUMMARY OF THE INVENTION In accordance with the invention, a new and useful strainer device for use in a drainage receptacle is disclosed.

Drainage receptacles of the type in which the strainer device of the present invention may be employed are either located in areas of heavy foot traffic or are located in inaccessable areas. Therefore, two embodiments of the present invention are disclosed.

In areas where it is desirable to cover the open drainage receptacle, the strainer device comprises a perforated cover plate having a debris retainer basket removably suspended therefrom. Holding means are provided on the lower surface of the plate for removably positioning the strainer device flush with the upper surface of the receptacle. The holding means are also employed for removably supporting the debris retainer basket. The debris retainer basket is provided with a frame having a centrally located opening formed therethrough. Sieve means in the form of a mesh of wire having a centrally located depression formed therein is affixed to the frame.

When this embodiment of the present invention is employed in areas having heavier than normal drainage requirements, enlarged openings may be formed in the cover plate to increase the flow handling capabilities of the strainer device.

When the drainage receptacle is located in relatively inaccessable areas where there is no danger of anyone stepping into the receptacle, such as under work tables, counters, and the like, a debris retainer basket alone may be employed. This is accomplished by enlarging the previously described basket so that the frame thereof is of substantially the same configuration as the flange of the drainage receptacle, upon which it is removably positioned.

Accordingly, it is an object of the present invention to provide a new and useful strainer device for use in drainage receptacles.

Another object of this invention is to provide a new and useful strainer device for use in drainage receptacles, the device being adapted to captively retain debris therein for easy and rapid cleaning of the drainage receptacle.

Another object of the present invention is to provide a new and useful strainer device for use in drainage receptacles, in which the strainer device employs a perforated cover plate having a debris retainer basket removably suspended from the lower surface thereof.

Another object of the present invention is to provide a new and useful strainer device for use in drainage receptacles, the strainer device employing a perforated cover plate which is adapted to be mounted flush with the upper surface of the drainage receptacle. Holding means are provided on the lower surface of the cover plate for rigidly removably positioning the strainer device within the drainage receptacle and for removably supporting a debris retainer basket suspended therefrom.

A further object of this invention is to provide a new and useful strainer device for use in drainage receptacles, in which a debris retainer basket is removably supported upon the upper flange of the drainage receptacle for captively containing foreign material which may enter into the receptacle.

The foregoing and other objects of this invention, the various features thereof, as well as the invention itself may be more fully understood from the following description when read in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a fragmentary perspective view of a drainage receptacle having the strainer device of the present invention employed therein;

FIG. 2 is a sectional view taken on the line 2--2 of FIG. 1',

FIG. 3 is a sectional view taken on the line 3-3 of FIG. 2 and showing the strainer device of the present invention removed from the drainage receptacle;

FIG. 4 is a plan view partially broken away and having the debris retainer basket partially removed therefrom;

FIG. 5 is a plan view of a modification of the strainer device of the present invention; and

FIG. 6 is a sectional view of another modification of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring more particularly to the drawings, FIG. 1 illustrates a strainer device 10 of the present invention installed within a drainage receptacle 12. The drainage receptacle 12 is of the type commonly referred to as a floor sink which is employed in areas of heavy drainage requirements such as in the kitchen of a restaurant or food preparation room of a supermarket. A similar device in which the strainer mechanism of the present invention may be employed is sometimes called a roof drain.

The drainage receptacle I2 is formed with substantially horizontally disposed flange 14 which circumscribes a drainage inlet or opening 15. A receptacle body 16 is formed integral with the flange 14 and depends therefrom. In the bottom of the receptacle body 16 there is provided a drain outlet 18.

The drainage receptacle 12 is normally recessed in a mounting surface 20 such as a floor and is flush therewith to provide a continuous surface.

When the drainage receptacle 12 is located in an area of heavy foot traffic, such as the middle of a kitchen floor, a perforated cover plate 22 is provided to eliminate the hazard which would result from an uncovered opening in a walking surface.

The perforated cover plate 22 is provided with four side edges 23 and has a plurality of elongated slots 24 formed therethrough which are positioned in groups or clusters 25. The slots 24 which make up each of the clusters 25 are directionally oriented so that the slots 24 of each cluster 25 are perpendicular with respect to the slots of the adjacent clusters. This perpendicular disposition of the slots of adjacent clusters permits drainage through the perforated cover plate 22 while maintaining structural rigidity of the plate.

The cover plate 22 is provided with a centrally located lifting hole 26 formed therethrough which allows easy removal of the strainer device 10 from the drainage receptacle 12.

When the strainer device 10 is employed in areas requiring more than normal drainage, one or more of the clusters 25 may be eliminated from the cover plate 22 to provide an enlarged opening 27 (FIG. 4) in which a drainage hose (not shown) may be directly inserted into the receptacle 12.

As best seen in FIGS. 1 and 2, the strainer device 10 is designed to be mounted flush with the flange 14 of the drainage receptacle 12 to provide a continuous walking surface. Positional stability of the removably mounted strainer device 10 is provided by a plurality of channels 28 or holding means which are affixed to the lower surface of the perforated cover plate 22 and depend therefrom.

The holding means 28 is illustrated as Z-shaped bars, however other shapes could be employed such as C- shaped members and the like.

At least one channel 28 is positioned adjacent to each of the side edges 23 of the cover plate 22. Each of the channels 28 is adapted to biasingly engage the receptacle body 16 when the strainer device 10 is installed within the drainage receptacle 12. The normal or relaxed position of the channel 28 is shown in FIG. 3 wherein the strainer device 10 of the present invention is shown removed from the drainage receptacle 12. When the strainer device 10 is installed within the drainage receptacle 12, the lower portions of the channels 28 will be deflected inwardly and will exert an outwardly directed biasing force on the receptacle body 16.

A debris retainer basket 32 is slidably removably suspended from the holding means 28.

Each of the channels 28 is provided with an inwardly disposed lip 30 or leg formed on the lower end thereof. A pair of the channels 28, designated as 28a, are oppositely positioned with respect to each other so that their lips 30a serve as guideways upon which the debris retainer basket 32 is installed or removed from the strainer device 10. One of the channels 28, designated as 28b, has its lip 30b positioned above the plane of the lips 30a to provide an access opening 34 through which the basket 32 may be moved. The remaining channel 28, designated as 28c has its lip 30c positioned in the same plane as the lips 30a to act as a stop and provide support for the basket 32 when it is in the installed position.

The debris retainer basket 32 is provided with a rigid frame 35 having a centrally located opening 36 formed therethrough. A sieve means 38,'which in the preferred embodiment is a screen, or mesh of wire has its peripheral edges suitably attached to the lower surface of the frame 35 by such means as crimping, welding or other suitable methods. The screen 38 is preformed with a centrally located depression 40 for straining and captively retaining foreign material therein.

When the strainer device 10 of the present invention is employed in an area having very heavy drainage, or where a multiplicity of drainage hoses must be installed within the strainer device 10, a modified cover plate 22a as shown in FIG. 5 may be employed. The cover plate 22a is similar in structure to the cover plate 22 and has the entire central area removed therefrom.

When a drainage receptacle 12 is employed in an inaccessible area, that is, an area of no foot traffic, and this same area does not require a rigid flush mounted strainer device, an enlarged debris retainer basket 32a may be employed as seen in FIG. 6. The basket 32a is formed in the same manner as the previously described debris retainer basket 32, with the exception that the basket is enlarged and its frame 35a is configured to substantially conform to the configuration of the flanges 14 of the drainage receptacle 12. With the debris retainer 32a fabricated in this manner, it may be removably positioned on the flange 14 of the receptacle 12.

While the principles of the invention have now been made clear in an illustrated embodiment, there will be immediately obvious to those skilled in the art many modifications of structure, arrangement, proportions,

the elements, materials, and components, used in the practice of this invention, and otherwise, which are particularly adapted for specific environments and operating requirements without departing from those principles. The appended claims are therefore intended to cover and embrace any such modifications within the limits only of the true spirit and scope of the invention.

What we claim is:

l. A strainer device for use in a drainage receptacle of the type having a horizontally disposed upper flange which surrounds a central opening from which a sinkshaped receptacle body depends and is integrally formed therewith to provide a radiused juncture between the inner surface of the body and the upper surface of the flange, said device comprising:

a. a perforated plate having four laterally disposed side edges which are restingly positionable upon the radiused juncture of the drainage receptacle to position said plate flush with the upper surface of the flange thereof;

b. a strainer basket which includes a flat rigid four sided frame; and

. a pair of channel elements dependingly affixed to the lower surface of said plate, each of said channels parallel with and adjacent to a different one of an opposing pair of the side edges of said plate for positioning said channels in a spaced apart parallel relationship, each of said channels having an inwardly facing lip formed on the lower portion thereof upon which an opposing pair of the side edges of said strainer basket are slidably supportingly positioned for demountably suspending said strainer basket in a mounted position adjacent to the lower surface of said plate, each of said channels biased outwardly to engagingly contact the inner surface of the receptacle body to removably retain and stabilize said plate when it is mounted flush with the flange thereof.

2. A strainer device as claimed in claim 1 wherein the frame of said strainer basket has a central opening formed therethrough, said strainer basket further including a porous sheet rigidly affixed to the frame and having a centrally located depression formed therein which is positioned adjacent to the central opening of the frame of said strainer basket.

3. A strainer device as claimed in claim 1 wherein the frame of said strainer basket has a central opening formed therein, said strainer basket further comprising a mesh of wire affixed to the lower surface of the frame and having a centrally located depression formed therein.

4. A strainer device as claimed in claim 1 and further including a second pair of channel elements dependingly affixed to the lower surface of said plate and each positioned parallel and adjacent to a different one of a second opposed pair of the side edgesof said plate, each of the channels of said second pair biased outwardly for contactingly engaging the inner surface of the receptacle body when said plate is positioned flush with the flange thereof, one of the channels of said second pair having an inwardly facing lip on the lower portion thereof for supportingly engaging a third side edge of said strainer basket, the other channel of said second pair having an inwardly facing lip formed on the lower portion thereof and depending from said plate a distance which positions its lip between the mounted position of said strainer basket and the lower surface of said plate to provide clearance through which said strainer basket is slidingly demountably movable.

5. A strainer device as claimed in claim 1 wherein said channel elements are each formed of an elongated Z-shaped in cross-section member.

6. A strainer device as claimed in claim 1 wherein said perforated plate is provided with at least one enlarged opening formed therethrough for increasing the flow handling capability of said strainer device.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4261824 *Jan 12, 1979Apr 14, 1981Casper CuscheraFloor drain
US4268390 *Sep 10, 1979May 19, 1981Cunningham William T JStorm drain sump filter
US4419232 *Nov 9, 1981Dec 6, 1983Arntyr Oscar SvenFiltering and collecting device for water drains
US4460462 *May 7, 1982Jul 17, 1984Arneson Products, Inc.Leaf trap and main drain assembly
US4776722 *Feb 19, 1987Oct 11, 1988Gaudin Carl JSelf sealing sewer cover assembly
US5028320 *Dec 4, 1989Jul 2, 1991Gaudin Carl JSewer catch basin with gas seal for a petroleum refinery or chemical processing plant
US5062735 *Dec 4, 1989Nov 5, 1991Gaudin Carl JSelf sealing domed sewer cover assembly
US5284580 *Aug 4, 1992Feb 8, 1994Shyh Shyh YuanRefuse collecting frame for sewer
US5372714 *Oct 21, 1993Dec 13, 1994Logue, Jr.; George E.Storm sewer catch basin and filter
US5486287 *Sep 26, 1994Jan 23, 1996Murphy Marketing, Inc.Wastewater straining device
US5535554 *Sep 8, 1995Jul 16, 1996Harris Jr.; Walter EGutter and drain spout guard
US5575925 *Dec 12, 1994Nov 19, 1996Logue, Jr.; George E.Storm sewer catch basin and filter
US5788849 *Jun 7, 1995Aug 4, 1998Hutter, Jr.; James E.Filter system
US5843306 *Apr 16, 1997Dec 1, 1998Singleton; Earl R.Temporary silt guard for storm water collection basin inlet
US6004457 *Mar 31, 1998Dec 21, 1999Singleton; RogerTemporary silt guard for sewer inlet
US6086758 *Nov 13, 1998Jul 11, 2000Pactec, Inc.Storm drain liner
US6093314 *Jun 5, 1998Jul 25, 2000Wilson; Andrew CharlesDrain insert for storm water sewer systems, and method of manufacture
US6143168 *Jul 27, 1999Nov 7, 2000Normandy Products CompanyGrate for a subsurface catch basin
US6149803 *Aug 28, 1998Nov 21, 2000Atlantic Contruction Fabrics, Inc.Storm sewer catch basin filter
US6200484Mar 16, 2000Mar 13, 2001Mcinnis Stephen J.Surface water filtration apparatus
US6231758Aug 22, 2000May 15, 2001Abtech Industries, Inc.Curb-inlet storm drain systems for filtering trash and hydrocarbons
US6261444Jun 18, 1998Jul 17, 2001J. Mark ForseStorm sewer filtering apparatus
US6261445Dec 17, 1999Jul 17, 2001Earl Roger SingletonTemporary silt guard for sewer inlet
US6294095Apr 24, 2000Sep 25, 2001Erosion Control Services, Inc.Silt filtration system
US6299764 *Jun 2, 2000Oct 9, 2001Stainless Steel Systems, Inc.Sanitary floor drain
US6315896 *Jun 27, 2000Nov 13, 2001Ronald B. JohnsonDisposable waste collector
US6334953Nov 24, 1999Jan 1, 2002Roger SingletonStorm water drainage filter assembly
US6337025Feb 25, 2000Jan 8, 2002Environmental Filtration, Inc.Filter canister for use within a storm water sewer system
US6344519Jan 9, 1998Feb 5, 2002Abtech Industries, Inc.Systems for ameliorating aqueous hydrocarbon spills
US6416674Aug 15, 2000Jul 9, 2002Earl Roger SingletonSilt-guard apparatus for use in a detention pond
US6428693May 24, 2001Aug 6, 2002Earl Roger SingletonTemporary silt guard for sewer inlet
US6521122 *Nov 22, 2000Feb 18, 2003T And M Tech Environmental SupplyDrainage basin filter
US6531059Nov 13, 2000Mar 11, 2003Abtech Industries, Inc.Suspended runoff water filter
US6537448 *Dec 8, 2000Mar 25, 2003Lee HoukFloor sink filter basket
US6562233 *Dec 27, 2001May 13, 2003Pactec, Inc.Storm drain line with riser 2
US6723791Dec 31, 2001Apr 20, 2004Abtech Industries, Inc.Systems for ameliorating aqueous hydrocarbon spills
US7048878Mar 24, 2003May 23, 2006Abtech Industries, Inc.Process of forming oil-absorbent bodies
US7094338Feb 21, 2003Aug 22, 2006Abtech Industries, Inc.Method of making and using a filter in the form of a block of agglomerated copolymer fragments
US7112274 *Nov 10, 2003Sep 26, 2006Sanguinetti Peter SPost-production drain inlet filter system
US7156987Feb 3, 2004Jan 2, 2007Sanguinetti Peter SStorm drain filter device
US7201843Jul 23, 2002Apr 10, 2007Spider Environmental, Inc.Framed storm drain insert sediment filter
US7229560Dec 6, 2004Jun 12, 2007Abtech Industries, Inc.Sack-based processes for recovering oil floating on water
US7246472 *Mar 26, 2001Jul 24, 2007Unidrain A/SDrain and a building structure having a drain
US7524414 *May 22, 2007Apr 28, 2009Candelario BarraganApparatus for filtering out and collecting debris at a storm drain
US7618532Nov 17, 2009Mark A. MangromAromatic drain device
US7788877Sep 28, 2006Sep 7, 2010Dni Realty, LlcBasement sump system and method
US7887697 *Feb 15, 2011Mark MangromAromatic drain device
US7954280Jun 21, 2006Jun 7, 2011Dni Realty, LlcBasement drainage conduit
US8012346 *Jul 21, 2005Sep 6, 2011Fabco Industries, Inc.Storm sewer insert for filtering and treating stormwater
US8088279Apr 23, 2008Jan 3, 2012Cleanway Environmental Partners, Inc.Runoff water filtration apparatus
US8117797Sep 3, 2010Feb 21, 2012DNI Reality, LLCBasement sump system and method
US8221632Jul 17, 2012Cleanway Environmental Partners, Inc.Surface water filtration device
US8272170Sep 25, 2012Paraino, Inc.Drain box with downspout guard and method of making same
US8277646Oct 2, 2012Singleton Earl RSystem and method for temporary storm water drainage control
US8409433Mar 13, 2012Apr 2, 2013Aromatic Drain Device, Inc.Device for use with floor drains
US8475655Mar 2, 2011Jul 2, 2013Metrochem, Inc.Filter insert for curb inlet drain
US8555567May 31, 2011Oct 15, 2013Dni Realty, LlcBasement drainage conduit
US8596002Jun 21, 2006Dec 3, 2013Dni Realty, LlcBasement waterproofing flange
US8658033 *Jun 19, 2011Feb 25, 2014Dennis FarkasMethod and system for installing a drain
US8973324Feb 16, 2012Mar 10, 2015Dni Realty, LlcBasement sump system and method
US9115497 *Mar 24, 2014Aug 25, 2015Products Innovation Group Inc.Gutter screen assemblies
US20020113025 *Dec 11, 2001Aug 22, 2002Gauldin Patrick W.Filtration system for storm water catch basins
US20030115814 *Mar 26, 2001Jun 26, 2003Nielsen Claus DyreDrain and a building structure having a drain
US20030225211 *Mar 24, 2003Dec 4, 2003Rink Glenn R.Process of forming oil-absorbent bodies
US20040016692 *Jul 23, 2002Jan 29, 2004Spider Environmental, Inc.Framed storm drain insert sediment filter
US20060049085 *Sep 8, 2005Mar 9, 2006Parker Todd GQuick release drain filter apparatus and system
US20070262006 *May 10, 2006Nov 15, 2007Worth Thomas WAromatic Drain Device
US20070294965 *Jun 21, 2006Dec 27, 2007Dni Realty, LlcBasement waterproofing flange
US20070294966 *Jun 21, 2006Dec 27, 2007Dni Realty, LlcBasement drainage conduit
US20080023382 *Jul 27, 2006Jan 31, 2008Longo Salvatore RSupport for filter system
US20080078142 *Sep 28, 2006Apr 3, 2008Dni Realty, LlcBasement sump system and method
US20080104910 *Nov 3, 2006May 8, 2008Dni Realty, LlcBasement floor drain and method
US20090026285 *Oct 6, 2008Jan 29, 2009Mark MangrumAromatic Drain Device
US20090266767 *Oct 29, 2009Cleanway Environmental Partners, Inc.Runoff Water Filtration Apparatus and System
US20100320131 *Jun 22, 2009Dec 23, 2010Singleton Earl RTemporary storm water drainage control member
US20110056152 *Sep 3, 2010Mar 10, 2011Dni Realty, LlcBasement sump system and method
US20110155672 *Jun 30, 2011Mcinnis Stephen JSurface Water Filtration Device
US20110203191 *Aug 25, 2011Paraino, Inc.Drain box with downspout guard and method of making same
US20130174921 *Nov 19, 2012Jul 11, 2013Schluter Systems L.P.Drain system with odor trap and related methods
US20150075084 *Mar 24, 2014Mar 19, 2015Products Innovation Group, Inc.Gutter screen assemblies
USD669969Oct 30, 2012Paul Bradley ForrestDrain insert
Classifications
U.S. Classification210/164
International ClassificationE03F5/04
Cooperative ClassificationE03F5/041, E03F5/0401, E03F5/0404
European ClassificationE03F5/04C4, E03F5/04C, E03F5/04G
Legal Events
DateCodeEventDescription
Apr 19, 1993ASAssignment
Owner name: N. WASSERSTROM & SONS, INC., ARIZONA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:THOMPSON, C. AMES;REEL/FRAME:006498/0357
Effective date: 19930329
Apr 19, 1993AS02Assignment of assignor's interest
Owner name: N. WASSERSTROM & SONS, INC. 3024 WEST WELDON PHOEN
Owner name: THOMPSON, C. AMES
Effective date: 19930329
Dec 31, 1981AS02Assignment of assignor's interest
Owner name: SPECIALTY SHEET METAL CO.
Effective date: 19811230
Owner name: THOMPSON, C. AMES, #1 EAST INTERLACKEN DRIVE, PHOE
Dec 31, 1981ASAssignment
Owner name: THOMPSON, C. AMES, #1 EAST INTERLACKEN DRIVE, PHOE
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:SPECIALTY SHEET METAL CO.;REEL/FRAME:003938/0971
Effective date: 19811230