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.

Patents

  1. Advanced Patent Search
Publication numberUS3554142 A
Publication typeGrant
Publication dateJan 12, 1971
Filing dateApr 10, 1969
Priority dateApr 10, 1969
Publication numberUS 3554142 A, US 3554142A, US-A-3554142, US3554142 A, US3554142A
InventorsDenhardt Carl, Kious Dane R, Sorenson Bill W
Original AssigneeAmerican Athletic Equipment Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Adapter bracket
US 3554142 A
Images(1)
Previous page
Next page
Description  (OCR text may contain errors)

United States Patent [72] lnventors Bill W. Sorenson;

Dane R. Kious. and Carl Denhardt, Jefferson, Iowa [21] Appl. No. 815,088 [22 Filed Apr. 10,1969 [45] Patented Jan. 12, 1971 [73] Assignee American Athletic Equipment Co. Greene County, Iowa a corporation of Iowa [54] ADAPTER BRACKET 15 Claims, 7 Drawing Figs.

[52] US. Cl 108/153, 248/235 [51] Int. Cl E04h 3/10 [50] Field ofSearch 248/188, 188.8, 235; 52/8, 9, 188; l08/90,97, 101, 111, 114, 153,157,159, 13, 14

[56] References Cited UNITED STATES PATENTS 2,985,924 5/1961 Burke 52/8 3,213,570 10/1965 Abramson 52/8 Primary ExaminerRoy D. Frazier AttorneyZarley, McKee & Thomte ABSTRACT: An adapter bracket for securing metal seat and foot boards to vertical risers having a plate means at the upper end thereof. The bracket is comprised of a horizontal base portion having an elongated channel means extending downwardly from the bottom side thereof which is adapted to slidably receive a plurality of bolt members therein. The bolt members are prevented from rotation in the channel means and are received by the plate means to secure the bracket to the riser. The metal board is then secured to the bracket by means of a plurality of bolt members which extend through the bolt openings formed in the base portion. The bolt members have clips secured thereto which engage the board to facilitate the attachment of the boards to the bracket. The adapter bracket is also designed to permit the abutting ends of a pair of boards to be secured together. The bracket permits the metal boards to be substituted for the wooden planks which are commonly used as seat and foot boards in grandstands or the like.

' bracket which perniits'the v {A1,ililfli 3lt BRACKET f This invention relates to anadapter bracket and more particularly pertains to an adapter bracket'which is adapted to be secured to a conventional riser found in grandstands or the like to permit a metal board or plank to be substituted for the wooden planks.

Grandstandsfstadiurns, bleachers, etc: which were constructed several -years ago'usually used wooden planks or boards as seat and foot boards. These'wooden planks are com- 7 Therefore, it is aLprincipalobject of "this invention to provide an adapter bracket for securing rrital seat and'foot boards to conventional vertical risers; v

A runner object of this-*inventioriis' as provide an adapter bracket for securing aluminum seat and footboards to conventional vertical risers which includes meansto facilitate the quick and easy attachment of-the boards to the risers.

A further object of this invention" is to provide and adapter bracket for'securing'alurninurnseat and foot boards to vertical risers wherein'the'bracket-is'formed of extruded aluminum.

' A further object fof this invention ism provide an adapter abutting ends of two planksto be secured thereto.

' A further objectof this invention'is to'provide an adapter bracket. which includes an elongated channel on the bottom thereof whichfslidably ,receives'bolt'mer'iibers to perrnit the bolt members robe slidably moved withrespect to the riser to facilitate the attachment of the brackettothe riser.

A further object'of thisinventlon is to provide an adapter bracket for securing aluminum seat and foot boards to vertical risers which is economical of manufacture; durable in use and refined in appearance: f f v a These and other'objects will be apparent to those skilled in h art. i

- This inventionconsists in theconstructiom arrangements, and combination of the variouspa'rts. of the device, whereby the objects. contemplated are attained. as hereinafter more fully set forth, specifically pointed out in the claims, and illustratedin'the accompanying drawings, in whichz FIG. 1 is a fragmentary exploded perspective view of a conventional riser and the wooden board which is, to be replaced;

FIG.-2 -is an exploded perspective view ofthe adapter bracket and the aluminum plank to be secured thereto;

FIG. 3 is a fragmentary top elevational view of a pair of seat boards placed in abutting end to endrelati'onship, the broken lines indicating the relative location of the adapter brackets;

FIG. 4 is anenlarged sectional view as seen along lines4-4 of FIG. 3 with portions thereof cut away to more fully illustrate the invention; s

FIG. 5 is an enlarged view as seen along lines 5-5 of FIG. 3 with portions thereof cut away tomore fully illustrate the invention; 1

FIG. 6 is an exploded "perspective view of the fastener used f to secure the plank to the'adapterb'racket; and

FIG. 7 is an enlarged sectional view-seen FIG.3.

The numeral I0 generallydesignates a conventional grandstand riser having an elongated plate 12 secured to the upper end of a post 14. The plate 12 is of conventional construction and is sometimes replacedbyanelongated angle or the like Plate 12 is provided with a pairyof'bolt-openings 16 and 18 :formed therein which are adaptedto. receive the bolts 20 and 22 respectively for attaching a conventional wooden seat or foot board 24 to the riser.} p

The numeral 26 generally refers to'aj metal plank which is to be substituted for the wooden board 2 4. 'P referably, the plank '26 is constructed of extruded aluminum and includes a top extend inwardly from the lower ends of front and back portions 30 and 32 respectively. Lips 38 and) extend upwardly from the inner ends of horizontal portions 34 and 36 respectively. Plank 26 also includes a center support means 46 which is of general inverted T-shape having a'lower end 48. An end cap 50 is adapted to embrace one end of the plank 26 as illustrated in FIG. 2 and is maintained thereon by a pair of screws 52 and 54 extending through end cap 50 and the openings 56 and 58 respectively in plank 28. a

The adapter bracket of this invention is generally designated by the reference numeral 60 and is preferably constructed of extruded aluminum. Bracket 60 includes a generally rectangular base portion 62 having bolt openings 64, 66, 68 and 70 extending therethroug'h at the comers thereof. An elongated channel means 72 is provided on the bottom of base portion 62 and is generally comprised :of a pair of vertical sidewalls 74 and 76 extending downwardly from base portion 62. Flange portions 78 and 80 extend inwardly from the lower ends of sidewalls 74 and 76 respectively and terminate in a spaced relationship with respect to each'other so as to provide an opening 82 therebetween. The distanc'e between the inner ends of flange portions I8v and 80 is such to permit the shank portion 84 of a bolt means: 86 to extend downwardly therethrough while preventing the head portion 88 of the bolt means 86 from passing therethroug h. Bolt means 86 is a standard truss head machine screw having 'aslot 90 formed in the head portion thereof which is adapted to ordinarily receive a screwdriver or the like. Bolt means86includes a standard lock nut 92. As best illustrated in F IG. 5, bracket 60 includes an elongated ridge 94"which extends downwardly from the bottom of base portion 62 between sidewalls 74 and 76 and which is adapted to be received-by the slot 90 of the bolt means 86 when bolt means has been slidably inserted into the channel means 72 to prevent rotation of the bolt means 86 when lock nut 92 is threadably moved thereon.

The installation procedure is as follows: The bolts 20 and 22 would be removed from the riser 10 and, the board 24 would be removed therefrom and dis'cardedThe adapter bracket 60 60 on the riser 10. It should be noted that the bracket 60 can also be slidably moved with respect to the riser 10 by simply loosening the bolt means 86 to reposition the bracket 60 with respect thereto. l

The plank 26 is then secured to the adapter bracket 60 by inserting the bolts 96, upwardly through certain of the openings 64, 66, 68 and 70. Bolts 96 are of the lock head type and are adapted tothreadably receive flat weld nuts 98 thereon (FIG. 6).

on lines 7-7 of Y at one side of base portion 102 while an upstanding flange 108 is provided at the other side thereof. As seen in FIG. 6. bolt 96 is adapted to extend upwardly through opening 104 so that the bolt 96 may be threadably received by the nut 98. Channel which would havea top portion corresp di om la 12, a 106 and flange 108 prevent nut 98 from rotating while bolt 96 .40. Thus, the bolts 96 are extended upwardly through certain of the openings 64, 66, 68 and 70 and clamps mounted thereon by thenuts 98 as previously described and as illustrated in FIG. 4. The tightening of the bolt 98 maintains the channel 106 over the lip 38 or 40 to maintain the plank on the adapter bracket. The configuration of the clamps 100 also permits selective slidable movement of the plank with respect to the adapter bracket 60 if desired. The opening 107 defined by channel 106 has a width slightly greater than the thickness of the lip 40 to provide compensation for slight variations in the width of the plank 26 or its position on bracket 60. The lower end 109 of channel 106 engages horizontal portion 36 to prevent slidable movement of the plank 26 with respect to the bracket 60. FIG. 3 illustrates the manner in which the planks 26 are secured to the various adapter brackets. For example, when the adapter bracket merely supports a single seat board, as illustrated at the left side of FIG. 3, a pair of bolts 96 are inserted through opposite corners of the bracket. When the bracket supports abutting ends of two planks, four of the bolts 96 are inserted through the bracket 60 as illustrated at the center portion of FIG. 3. When the mounting bracket 60 is being used to support foot boards, it is recommended that four bolts 96 be inserted through the bracket 60 to provide additional support. The four bolts in the mounting bracket reduces the twist in the plank when people would walk on the same.

The adapter bracket described herein permits aluminum planks to be substituted for the wooden seat and foot boards found in existing grandstands, bleachers, stadiums, etc. with a minimum amount of effort and expense. The adapter bracket 60 permits the planks 26 to be mounted on the existing metal seat support. The adapter plate described herein permits the metal planks 26 to be installed in the existing grandstands without the necessity of completely altering the existing risers which greatly reduces the time and expense normally associated with such a conversion operation. The fact that the bracket 60 is of extruded aluminum construction permits the bracket to be economically and efficiently manufactured. Thus it can be seen that the bracket accomplishes at least all of its stated objectives.

Some changes may be made in the construction and arrangement of our adapter bracket without departing from the real spirit and purpose of our invention, and it is our intention to cover by our claims, any modified fomis of structure or use of mechanical equivalents which may be reasonably included within their scope.

We claim:

1. In an adapter bracket for securing an elongated horizontally disposed support member to an upstanding riser having a horizontal plate portion at the upper end thereof, said plate portion having a plurality of openings extending through, comprising:

said bracket including a base portion having a plurality of openings formed therein, and top and bottom sides;

said bracket including a base portion having a plurality of openings formed therein, and top and bottom sides;

said base portion having a channel means positioned at its bottom side adapted to slidably receive at least a pair of bolt members therein so that said bolt members extend downwardly therefrom to permit said bolt members to extend downwardly through said openings in said plate portion; and

said bracket adapted to have said support member mounted thereon by bolt members extending through said openings in said base portion and being operatively secured to said support member. Wherein said support means includes a top portion having front and rear wall portions extending downwardly therefrom, first and second horizontal portions extending inwardly from the lower ends of said front and rear wall portions respectively, and an upstanding lip extending upwardly from the inner end of each of said first and second horizontal portion, each of said bolt members having a clamp means mounted thereon above said base portion, each of said clamp means having a channel means extending over the lip adjacent thereto to maintain said plank on said bracket.

2. The bracket of claim I wherein each of said bolt members has a lock nut threadably mounted thereon, said channel means preventing rotation of said lock nut when said bolt member is threadably moved with respect thereto.

3. ln an adapter bracket for securing an elongated horizontally disposed support member to an upstanding riser having a horizontal plate portion at the upper end thereof, said plate portion having a plurality of openings extending through. comprising:

said bracket including a base portion-havinga plurality of openings formed therein. and top and bottom sides;

said base portion having a channel means positioned at its bottom side adapted to slidably receive at least a pair of bolt members therein so that said bolt members extend downwardly therefrom to permit said bolt members to extend downwardly through said openings in said plate portion;

said bracket adapted to have said support member mounted thereon by bolt members extending through said openings in said base portion and being operatively secured to said support member; and

wherein said support member includes a top portion having front and rear walls, portions extending downwardly therefrom, a first horizontal portionextending rearwardly from the lower end of said front wall portion, a first lip portion extgnding upwardly from the rearward end of said first horizontal portion, a second horizontal portion extending forwardly from the lower end of said rear wall portion, a second lip portion extending upwardly from the forward end of said second horizontal portion, each of said bolt members extending upwardly through said base portion having a clamp means mounted thereon, each of said clamp means including a base portion through which said bolt member extends, and an inverted U-shaped channel means at one side of said base portion, said channel means extending over one of said lip portions, said bolt membei' having a nut means threadably mounted thereon.

4. The bracke'tof claim 3 wherein said inverted U-shaped channel means includes spaced apart wall members defining an opening therebetween, said opening having a width greater than the thickness of said lip portion, one of said wall members having a lower end engaging said horizontal portion.

5. In combination, at least a pair of spaced apart, upstanding risers having horizontally disposed plate portions secured to the upper ends thereof, an adapter bracket detachably mounted on each of said plate portions, and a metal support member securedto and extending between said adapter brackets, each of said plate portions having at least first and second bolt openings formed therein, said support member having vertically spaced, inwardly extending flanges each of said adapter brackets including a base portion having a plurality of openings and means associated with openings for engaging the flanges and securing said support member thereto, each of said brackets including a channel means extending downwardly therefrom which is supported by said plate por tions, and at least a pair of bolts mounted in said channel means and extending through said plate portion.

6. The bracket of claim 11 wherein said base portion has a width sufficient to support abutting end portions of a pair of support members.

7. The bracket of claim 5 wherein said channel means includes a pair. of spaced apart vertical walls extending downwardly from the bottom side of said base portion, said walls having horizontal portions extending inwardly towards each other from the lower ends thereof, the inner ends of said horizontal portions being spaced apart a sufficient distance to permit the threaded portion of the bolt members to extend downwardly therebetween, said distance between said horizontal portions being less than the diameter of .the head portion of said bolt members.

8. The bracketof claim 7 wherein said base portion has an elongated ridge portion at its bottom side which extends downwardly therefrom between said walls, said ridge portion adapted to extend into a slot formed in said bolt member to prevent rotation of said bolt members;

9. The bracket of claim 8 wherein said bracket is of extruded aluminum construction.

10. The bracket of claim 7 wherein-said bracket is selectively slidably secured to said horizontal plate portion.

11. The bracket of claim 7 wherein said base portion is substantially rectangular in shape and has openings formed in its comer areas, said base portion having an. area greater than the area of said horizontal plate portion, said horizontal portions of said channel means adapted to engage the upper surface of said plate portion.

12. The combination of claim 5 wherein said bolts in said 'tion of said bolts.

15. The structure of claim 14 wherein said base portion has an elongated ridge portion at its bottom side which extends downwardly, said ridge portion being received in a slot formed in said bolt members to prevent rotation of said bolt members.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2985924 *Aug 16, 1954May 30, 1961J E Burke CompanyKnock-down bleacher
US3213570 *Sep 12, 1962Oct 26, 1965Jr Louis AbramsonPlastic bench-seats
FR1463067A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3960405 *Oct 31, 1974Jun 1, 1976Delong David CBench seat with end aligning and reinforcing insert
US3986616 *Jun 24, 1975Oct 19, 1976Robert GrayShelf
US3989299 *Jul 7, 1975Nov 2, 1976Long David C DeStadium riser backless seat, support and armrest
US4052101 *Nov 1, 1976Oct 4, 1977Delong David CStadium riser individual seat, support and armrest with common seat-row backrest
US4054316 *Mar 8, 1976Oct 18, 1977Delong David CBench seats with end aligning and reinforcing inserts
US4126354 *Sep 26, 1977Nov 21, 1978Stadiums Unlimited, Inc.Bench seats with end aligning and reinforcing inserts
US4307914 *Aug 13, 1979Dec 29, 1981Grosfillex S.A.R.L.Seat for terraces in a stadium or the like
US4552273 *Feb 21, 1984Nov 12, 1985Westinghouse Electric Corp.Paper management support rack
US4790594 *Jan 29, 1988Dec 13, 1988Contour Seats, Inc.Modular stadium seating and assembly method
US6196141Feb 22, 1999Mar 6, 2001Herron, Iii Warren L.Vertically stabilized adjustable shelf bracket assembly
US6341754 *Oct 4, 1999Jan 29, 2002Hp Intellectual Corp.Small appliance modular hanger system
US6663201Mar 5, 2001Dec 16, 2003Herron, Iii Warren L.Vertically stabilized adjustable shelf bracket assembly
US7934459 *Sep 19, 2006May 3, 2011Brian FrazierErgonomic workstation with raising and lowering elements
US8033611 *Sep 30, 2009Oct 11, 2011Danny Plastics Co. Ltd.Bench
WO1993014673A1 *Jan 15, 1993Aug 5, 1993Claus EbertTable top
Classifications
U.S. Classification108/157.13, 248/235
International ClassificationA47C1/16, A47C1/00, E04H3/10, E04H3/12
Cooperative ClassificationE04H3/12, A47C1/12
European ClassificationE04H3/12, A47C1/12