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US 4,740,010 AGranted
Foldable cart
AssigneeAccurate Metal Products, Inc.
InventorMilton A. Moskovitz
Life of this patent
Estimating the term…
Abstract
A foldable cart including a plurality of vertically spaced pairs of shelf members, their outer ends being pivotally connected to a pair of end frames, a lift bar pivotally connected to the inner ends of the shelf members and linked to the end frames for collapsing the shelf members and end frames to an inoperative folded position, and a stop member associated with the lift bar for limiting the downward movement of the lift bar when the pairs of shelf members are in a horizontal, coplanar operative position.
Claims17
A foldable cart comprising:
- (a) a pair of longitudinal spaced upright end frames, each end frame having a bottom end portion terminating in a ground-engaging wheel member,
- (b) a pair of shelf members having outer end portions and opposed inner end portions,
- (c) first journal means connecting said outer end portions of each of said shelf members to a corresponding opposite end frame for pivotal movement of said respective shelf members in a vertical plane relative to said end frames,
- (d) a vertically disposed lift bar,
- (e) second journal means pivotally connecting both said inner end portions to said lift bar for pivotal movement of said shelf members in a vertical plane relative to said lift bar,
- (f) a pair of stabilizing arms having opposed guide end portions and outer frame end portions,
- (g) guide pin means pivotally connecting said guide end portions,
- (h) third journal means connecting each of said frame end portions to a corresponding opposite end frame for pivotal movement of said respective stabilizing arms in a vertical plane,
- (i) elongated vertical guide means on said lift bar cooperating with said guide pin means to permit vertical movement of said lift bar relative to said guide pin means between an elevated inoperative position in which said end frames are contracted toward each other to fold said shelf members and a lower operative load-bearing position in which said end frames are expanded apart from each other and said shelf members are substantially horizontally coplanar,
- (j) stop means on said lift bar for limiting the downward vertical movement of said lift bar to said operative position.
7 more elements
Dependencies are inferred from the claim text.