Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS3490805 A
Publication typeGrant
Publication dateJan 20, 1970
Filing dateJan 15, 1968
Priority dateJan 15, 1968
Publication numberUS 3490805 A, US 3490805A, US-A-3490805, US3490805 A, US3490805A
InventorsMichael J Di Pierro, Donald P Mastrovito
Original AssigneeStandard Oil Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Plastic clasp
US 3490805 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Jan. 20, 1970 b PIERRQ ET AL 3,490,805

PLASTIC CLASP Filed Jan. 15, 1968 INVENTORS Dana/d P. Masiro iro Misha J. DIP/arm United States Patent O U.S. Cl. 292258 4 Claims ABSTRACT OF THE DISCLOSURE A clasp for securing lids to containers comprises a polypropylene hinge body containing a self-hinging area to provide the necessary flexibility for unclasping the clasp, the hinge body having an arcuate hinge bearing portion adapted to fit around a hinge pin of a member fitted with a clasping lip.

Our invention is a novel clasp useful for securing lids to containers. This clasp has advantages heretofore unknown to the art in that it can comprise only two pieces which are conveniently made by injection molding. Clasps capable of functioning for their intended use are obtained after simple cleaning of runners and assembly of two pieces by snapping them together. One of the two pieces, which will hereinafter be referred to as the hinge body, should be made of polypropylene since its construction incorporates a section of diminished thickness which provides a self-hinging area necessary to the operation of our clasp. The other piece, hereinafter called the frame, is desirably made of polypropylene because of its excellent durability when employed in molded articles, though it can be made of other polymers having similar properties, such as high-density polyethylene. A better understanding of our novel clasp can be obtained by reference to the accompanying drawing and the figures contained therein.

FIGURE 1 is a plan view of our novel clasp lying face down. The frame 1 and its relationship to the hinge body 2 are apparent from this figure. The representation of the clasp shows it as it would appear to an observer when afiixed to a container and in the closed or snapped position.

FIGURE 2 is a cross-section of our clasp taken along section line 22 of FIGURE 1. This shows an inner face head 3, which co-acts with a projection on the secured lid of a container to hold the clasp in place. The hinge pin 4 is shown at the base of the clasp section where it provides a connection to an arcuate portion of the hinge body 2. This hinge pin is conveniently made as an integral part of the frame holding, though it could be a. separate piece. Hinge body 2 is made with arcuate portion 6 shaped so as to encircle hinge pin 4 to an extent sufficient to hold it in place while being discontinuous to an extent sufficient to permit the arcuate portion 6 of the hinge body 2 to be snapped in place over hinge pin 4. Hinge body 2 also contains a portion of diminished thickness 7 which furnishes, in a known way, a self-hinging area. The end portion 8 of the hinge body 2 is adapted for friction fit or snap fit into a matching receptacle on the body of a container on which the clasp is to be used, though it could be secured by any of several means, including mechanical fasteners such as screws.

FIGURE 3 is a back view of the clasp which provides a better understanding of the relationship of inner face bead 3, hinge pin 4, hinge body 2, arcuate portion 6, self-hinging area 7 and end portion 8. This view shows the position of the elements of our clasp when snapped in place against the side of a container whose lid is being retained. Parts 9 and 9a are reinforcing ribs running the length of the clasp frame in order to give it additional r3 CC rigidity. Parts 10 and 10a are similar reinforcing segments for the base of the clasp where it attaches to hinge pin 4.

FIGURE 4 is a representation of our clasp in place on a container and securing the lid of such container. Inner face bead 3 is fitted over a co-acting bead 12 on the lid of the container. The hinge body 2 is shown flexed inwardly at self-hinging area 7 so as to maintain tension upon the clasp at inner face bead 3, thereby securing the clasp and the container lid in place. Reinforcing member 13 on the hinge body 2 provides structural rigidity between the arcuate portion 6 and the projection of hinge body 2 which is a grip adapted for grasping and unlatching the clasp. As can be seen from the drawing, the clasp can be affixed to the container whose lid it retains by securing the end portion 8 of the hinge body 2 in a suitable closely fitting enclosure 14 formed in or attached to the container. The end portion 8 and the enclosure 14 may be fitted with interlocking raised beads and depressions in order to prevent easy withdrawal of the end portion from the enclosure. Various configurations of reinforcing ribs and variations in structure can be effected by those skilled in the art having knowledge of our invention.

Having thus described our invention, what we claim is:

1. An article of manufacture comprising:

(1) a frame having:

(a) opposed end pieces, and

(b) side frame members connecting said opposed end pieces, one of said end pieces having shaped therein (0) a bead on the inner face of said end piece, the other of said end pieces having fitted therein ((1) a hinge pin, said hinge pin being associated with;

(2) a polypropylene hinge body having molded therein an arcuate portion adapted to snap fit over said hinge pin, said hinge body having a projection forming:

(a) a grip end spaced from said arcuate portion and at the other end of said hinge body from said grip (b) a section of diminished thickness providing a self-hinging area, said self-hinging area connecting the major portion of the hinge body to (c) an end portion adapted for securing said hinge body to a surface.

2. The article of claim 1 wherein said hinge pin is an integrally molded part of one of said end pieces of said frame.

3. The article of claim 2 wherein said end portion adapted for securing said hinge body is fitted with a raised bead adapted for securing said end portion in an enclosure fitted with a receptacle for said raised bead.

4. The article of claim 3 wherein said frame is a onepiece molding of polypropylene.

References Cited UNITED STATES PATENTS 1,773,693 8/1930 Stirrup 292113 3,181,905 5/1965 Bisbing 292109 3,324,930 6/ 1967 Colombo --231 FOREIGN PATENTS 575,086 4/1924 France.

MARVIN A. CHAMPION, Primary Examiner R. L. WOLFE, Assistant Examiner U.S. Cl. X.R. 292-413

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1773693 *Aug 12, 1926Aug 19, 1930Stirrup Mfg Company IncLatch for covers
US3181905 *Apr 2, 1963May 4, 1965South Chester CorpDraw pull catch
US3324930 *Jul 26, 1965Jun 13, 1967Lavorazione Mat PlastFolding sliding doors
FR575086A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3730576 *Feb 3, 1971May 1, 1973Plastic Forming CoPlastic container and latch
US3828969 *Oct 4, 1971Aug 13, 1974Plastic Forming CoPlastic container
US3912313 *Apr 22, 1974Oct 14, 1975Kitson Poultry Equipment CoCage gate latch
US4023840 *May 13, 1976May 17, 1977Woodstream CorporationLatch assembly
US4035009 *May 28, 1974Jul 12, 1977Jacobs Stanley AContainer and locking lid
US4111476 *Jun 15, 1977Sep 5, 1978Jacobs Stanley ALatch handle and container lock
US4522312 *Sep 14, 1983Jun 11, 1985Southern Case, Inc.Container and associated latch structure
US4540206 *Apr 30, 1984Sep 10, 1985Southco, Inc.Adjustable draw latch
US4665596 *Nov 25, 1985May 19, 1987Green Neville KFastening device
US4782673 *Jun 9, 1987Nov 8, 1988Samsonite CorporationConnection device
US4804215 *May 31, 1988Feb 14, 1989Southco, Inc.Flexible draw latch
US4828298 *May 31, 1988May 9, 1989Southco, Inc.Flexible draw latch
US4830413 *Nov 6, 1987May 16, 1989Southco, Inc.Flexible draw latch
US4917421 *Nov 1, 1988Apr 17, 1990Federal-Hoffman, Inc.Detachable fastener for electrical enclosures
US5033778 *Apr 16, 1990Jul 23, 1991Minnesota Mining And Manufacturing CompanyIntegral over-center toggle latch for use with a molded case
US5040834 *Nov 29, 1990Aug 20, 1991Rubbermaid IncorporatedLockable latch for a container
US5125697 *Apr 11, 1991Jun 30, 1992Rubbermaid IncorporatedLockable latch for a container
US5127684 *Oct 12, 1990Jul 7, 1992Filterwerk Mann & Hummel GmbhTension clamp
US5139294 *Apr 26, 1991Aug 18, 1992Southern Case, Inc.Latch bearing for blow-molded case, and method and apparatus for forming same
US5193706 *Jan 26, 1990Mar 16, 1993Rubbermaid IncorporatedToolbox
US5238142 *Dec 7, 1992Aug 24, 1993Rubbermaid IncorporatedToolbox
US5480197 *Nov 3, 1993Jan 2, 1996Filterwerk Mann & Hummel GmbhToggle catch for intake air filters of internal-combustion engines, compressors and other machines which take in air
US5685451 *Jan 17, 1996Nov 11, 1997Delta Consolidated IndustriesCarrying case with inserted nameplate
US6070754 *Dec 22, 1998Jun 6, 2000Delta Consolidated IndustriesCarrying case with inserted nameplate
US6123893 *Jun 13, 1997Sep 26, 2000Delta Consolidated IndustriesProcess of making a carrying case with inserted nameplate by blow molding
US6189938 *Sep 10, 1998Feb 20, 2001Fujitsu LimitedLocking structure for covering element
US6196828Mar 28, 2000Mar 6, 2001Delta Consolidated IndustriesBlow mold for making a carrying case with inserted nameplate
US6457750Jun 19, 2000Oct 1, 2002Southco, Inc.Draw latch
US6469247Nov 16, 2000Oct 22, 2002Robroy Industries, Inc.Enclosure
US6604798Aug 10, 2000Aug 12, 2003Integra EnclosuresEnclosure for securing components
US6642446May 28, 2002Nov 4, 2003Robroy Industries, Inc.Enclosure
US6929295 *Jan 7, 2003Aug 16, 2005Johnson Controls, Inc.Storage compartment and latch arrangement thereof
US8627603May 31, 2011Jan 14, 2014Carlson Pet Products, Inc.Barrier with panels sliding parallel
US8720958 *Nov 4, 2011May 13, 2014Carlson Pet Products, Inc.Barrier with panels sliding parallel
US9222300May 12, 2014Dec 29, 2015Carlson Pet Products, Inc.Barrier with panels sliding parallel
US9260910Jun 12, 2013Feb 16, 2016Carlson Pet Products, Inc.Free standing sliding panel footed barrier
US9506286Dec 28, 2015Nov 29, 2016Carlson Pet Products, Inc.Barrier with panels sliding parallel
US20040130165 *Jan 7, 2003Jul 8, 2004Nurenberg Randy WilliamLatch device for cover member
US20050012342 *Oct 10, 2003Jan 20, 2005Aopen Inc.Attachment mechanism
US20080211249 *May 14, 2008Sep 4, 2008International Automotive Components Group North America, Inc.System for attaching an article holding assembly to a mounting member in a vehicle
US20100108622 *Nov 5, 2009May 6, 2010Gabriel George SLocking assembly
US20110127264 *Nov 30, 2009Jun 2, 2011Plano Molding CompanyContainer assembly
US20110147386 *Feb 28, 2011Jun 23, 2011Plano Molding CompanyContainer assembly
US20120235101 *Nov 4, 2011Sep 20, 2012Carlson Pet Products, Inc.Barrier with panels sliding parallel
DE2932998A1 *Aug 14, 1979Feb 28, 1980Sture Bertil Ragnar SimmeVorrichtung zum loesbaren befestigen flexibler teile, beispielsweise einer flexiblen abdeckung
DE3536157A1 *Oct 10, 1985Apr 23, 1987Hatz MotorenDevice for coupling structural parts
DE3934663A1 *Oct 18, 1989Apr 25, 1991Mann & Hummel FilterHakenverschluss
U.S. Classification292/258, 292/DIG.380, 292/113, 292/DIG.490
International ClassificationE05B15/16, E05C19/14
Cooperative ClassificationY10S292/38, E05C19/14, Y10S292/49, E05B15/1635
European ClassificationE05C19/14