IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0004336
(1987-01-15)
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발명자
/ 주소 |
- Klein Herbert H. (Arlington Heights IL)
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출원인 / 주소 |
- Unarco Industries, Inc. (Chicago IL 02)
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인용정보 |
피인용 횟수 :
2 인용 특허 :
1 |
초록
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A wedge connector for securing the horizontal cross beams of a storage rack to the hollow upright posts of the system. Two ear-supporting members extend laterally from an elongated shank, each of which members carries an upwardly extending welding ear. The wedge connector has a shape and carefully c
A wedge connector for securing the horizontal cross beams of a storage rack to the hollow upright posts of the system. Two ear-supporting members extend laterally from an elongated shank, each of which members carries an upwardly extending welding ear. The wedge connector has a shape and carefully controlled dimensions that make it possible to insert the elongated shank and upper wedging ear into the lower slot of a pair of elongated slots in the upright post of the storage rack. The elongated shank is then pivoted up within the interior of the hollow post into a position where the upper wedging ear can be moved back out of the upper elongated slot of the pair of slots, to place the wedge connector in its operative position. The dimensions of the lower wedging ear of the wedge connector are controlled so that the lower ear can not be inserted in the lower elongated slot in the upright post. The features described produce the advantage of being able to insert the wedge connector from outside a hollow, completely enclosed tubular upright post, while at the same time retaining the advantage of locating the elongated shank on the inside of the post when the connector has been placed in its final operative position.
대표청구항
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A wedge connector in combination with a knockdown storage rack that includes a hollow, upright, post having an inside, an outside and at least one pair of vertically aligned, vertically oriented, spaced, elongated slots in the wall of said post, the upper slot of said pair having a first predetermin
A wedge connector in combination with a knockdown storage rack that includes a hollow, upright, post having an inside, an outside and at least one pair of vertically aligned, vertically oriented, spaced, elongated slots in the wall of said post, the upper slot of said pair having a first predetermined length, the lower one having a second predetermined length, the two slots of said pair being spaced apart vertically a third predetermined distance, said rack further including a horizontal cross beam that terminates in a support plate matingly related to the exterior surface of said post, said support plate defining a vertically oriented elongated slot of substantially the same shape and dimensions as said upper elongated slot in said post wall, the bottom edge of said vertical elongated slot in said cross beam support plate being spaced above the bottom edge of the support plate a distance equal to said third predetermined distance, which wedge connector comprises: (a) a flat, elongated shank spanning said lower post slot, the portion of the post wall lying between said two post slots, and at least a portion of the upper one of said two post slots, the median plane of said shank being perpendicular to the respective planes tangent to the surfaces of the wall of said hollow post and of said mating support plate in the area adjacent said elongated slots in said post and said support plate, said elongated shank having a width, a bottom edge, an inner edge, an upper edge and an outer edge, the inner edge of said shank abutting the inner surface of said post wall, and the outer edge of said shank being remote from said post wall; (b) two ear-supporting members extending laterally from said inner edge of said elongated shank, one for each slot of said pair of post slots, said ear-supporting members being disposed one above the other; and (c) a wedging ear supported by each of said laterally extending members, said two ears being disposed one above the other, with a free end of each of said ears being directed upward, each of said ears having a bottom edge, an outer side edge, an upper edge located at the free end of the ear, and an inner edge adjacent the upper portion of said ear, the lateral dimension of said connector adjacent the upper end thereof, comprising the widths of said shank, said upper ear-supporting member and said upper ear, being slightly less than said second predetermined length of said lower post slot such that said upper end of said wedge connector, with said wedging ears pointed upward and the longitudinal axis of said elongated shank generally perpendicular to the lower one of said two elongated post slots, is inserted from outside the post into said lower post slot, the lateral dimension of said connector adjacent the lower end therof, comprising the widths of said shank, said lower ear-supporting member and said lower ear, being slightly more than said second predetermined length of said lower post slot such that said lower end of said wedge connector can not pass through said lower elongated post slot during said upper end portion of said wedge connector into said lower post slot the shape and dimensions of the lower portion of said elongated shank and the shape, dimensions, and location on said shank of said two wedging ears being such that, after said upper wedging ear has been inserted in said lower elongated post slot while said cross beam support plate is matingly engaged with said post wall and said upper post slot and said support plate slot are aligned with each other, the upper end portion of said elongated shank is pivoted within said lower elongated post slot upward about the lower end portion of said shank and the highest point on said upper edge of said upper wedging ear is moved to a position just within said upper elongated slot in said post wall, the shape, dimensions, and location on said elongated shank of said upper wedging ear being such that the highest point on said upper edge of said wedging ear continues to fall below the top edge of said upper elongated post slot as said upper end portion of the wedge connector is pivoted farther beyond the position in which said upper ear lies just within said upper post slot, the shape and dimensions of said upper wedging ear being such that said ear passes, after the wedge connector has been pivoted as just described, entirely through said aligned slots in said post wall and said cross beam support plate, said inner edge of each of said upper and lower wedging ears having a first inclined surface that is inclined away from said shank in the upward direction towards the free end of the ear, with the bottom portion of said inner edge of the ear being spaced from said inner edge of said shank a distance less than the combined thickness of said cross beam support plate and the wall of said post, to provide a wedging surface to confine (i) the portion of said support plate that lies immediately above said elongated slot in said plate, and (ii) the portion of said support plate that lies immediately above said bottom edge of the plate, respectively, when said support plate slot is aligned with said upper post slot, said upper wedging ear is inserted in the lower elongated post slots and pivoted as aforesaid to pass the upper wedging ear through said aligned slots, and the support plate is moved downward, whereby portions of said support plate above the confined portions just mentioned are urged against the outer surface of the wall of said upright post, and said inner edge of said shank is urged against the inner surface of the wall of said upright post, thereby connecting said support plate and its associated cross beam securely to the post.
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