Collapsible conveyor
First Claim
1. A collapsible conveyor for article handling comprising:
- an elongated frame;
means secured to said frame for displaceably supporting articles;
a pair of substantially identical legs;
means for pivotally securing said legs to opposite ends of said frame so that said legs are pivotable between a first position in which said legs lie substantially parallel to and adjacent to said frame and a second position in which the legs extend substantially perpendicular away from said frame,wherein each leg comprises an elongated first leg member and an elongated second leg member, said first leg member being hollow and having a rectangular cross sectional shape,said second leg member being telescopically slidably received in one end of said first leg member, said second leg member having three sides which flatly abut against three internal sides of the first leg member and a fourth side which longitudinally tapers along said second leg member so that a space is formed between the fourth side of said second leg member and the fourth side of said first leg member, said space decreasing in size as the insertion of the second leg member into the first leg member increases, andmeans for locking said leg members together at an adjusted position comprising a plate, means for freely pivotally securing said plate to said first leg member about an axis transverse to the axis of said first leg member and so that said plate depends from said plate pivotal securing means, and means for adjustably locking the pivotal position of said plate so that an edge of said plate abuts against said fourth side of said second leg member and prevents the further insertion of said second leg member into said first leg member.
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Accused Products
Abstract
A collapsible conveyor comprises a frame supporting a plurality of rollers and a support structure comprising a pair of legs pivotally secured to the frame. The conveyor also includes braces which extend between the frame and the legs and maintain stability of the legs in their extended position. Each leg comprises a first member slidably receiving a second member therein. The second member includes an inclined surface which tapers towards an opposite surface downwardly towards the lower portion of the inserted leg member. A locking plate is pivotally secured to the first leg member adjacent the inclined surface, and is abutted against the upper leg member by a bolt threadably engaged within a mounting plate secured to the hollow leg member. In addition, each brace includes a pair of substantially U-shaped channel members interconnected by a pivot pin so that one of the brace members can be pivoted toward and into the longitudinal channel of the other brace member when the leg is folded up against the conveyor frame. The brace members pivot towards each other in a direction facing away from the point at which the legs are pivotally secured to the conveyor frame so that a load supported by the conveyor urges the brace toward its fully locked and extended position.
60 Citations
9 Claims
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1. A collapsible conveyor for article handling comprising:
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an elongated frame; means secured to said frame for displaceably supporting articles; a pair of substantially identical legs; means for pivotally securing said legs to opposite ends of said frame so that said legs are pivotable between a first position in which said legs lie substantially parallel to and adjacent to said frame and a second position in which the legs extend substantially perpendicular away from said frame, wherein each leg comprises an elongated first leg member and an elongated second leg member, said first leg member being hollow and having a rectangular cross sectional shape, said second leg member being telescopically slidably received in one end of said first leg member, said second leg member having three sides which flatly abut against three internal sides of the first leg member and a fourth side which longitudinally tapers along said second leg member so that a space is formed between the fourth side of said second leg member and the fourth side of said first leg member, said space decreasing in size as the insertion of the second leg member into the first leg member increases, and means for locking said leg members together at an adjusted position comprising a plate, means for freely pivotally securing said plate to said first leg member about an axis transverse to the axis of said first leg member and so that said plate depends from said plate pivotal securing means, and means for adjustably locking the pivotal position of said plate so that an edge of said plate abuts against said fourth side of said second leg member and prevents the further insertion of said second leg member into said first leg member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification