# US 4,220,346 A · Utility cart > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 4,220,346 A - Document ID: US4220346A - Status: Granted - Kind: A - Application number: 05/945,858 - Filed: 1978-09-26 - Granted: 1980-09-02 - Earliest claimed: 1978-09-26 - Assignees: Concept Engineering, Inc. - Inventors: Robert C. Geschwender - Web page: https://patentgrep.com/patent/US4220346A ## CPC - B62B 1/12: involving parts being adjustable, collapsible, attachable, detachable, or convertible - E06C 1/397: characterised by having wheels, rollers, or runners - B62B: HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES (characterised by animal propulsion B62C; propulsion of sledges by driver or engine B62M) - E06C: LADDERS (E04F11/00 takes precedence; step-stools A47C12/00; adaptation of ladders to use on ships B63B, to use on aircraft B64; scaffolding E04G) ## Abstract A utility cart comprising an upwardly extending frame, a pair of wheels journaled on the lower end of the frame at opposite sides of the frame, and a bed pivoted adjacent one of its ends on the frame at the lower end of the frame for swinging about an axis extending from side-to-side of the frame between an extended position in which the bed extends forwardly from the frame in a generally horizontal direction and an upright position in which the bed extends upwardly alongside the frame at the front of the frame. The bed has a support at one end extending forwardly from the bed when the bed is in its upright position for supporting an object to be carried on the cart. Legs at the other end of the bed support the bed in its extended position. The bed can be selectively locked to the frame in its extended and upright positions. ## Claims ### Claim 1 A utility cart comprising: an upwardly extending frame; a pair of wheels journaled on the lower end of the frame at opposite sides of the frame for rotation about an axis extending transversely of the frame; a bed pivoted adjacent one of its ends on the frame at the lower end of the frame for swinging about an axis generally parallel to the axis of rotation of the wheels between an extended position in which the bed extends generally perpendicularly from the frame in a generally horizontal direction constituting the forward direction, and an upright position in which the bed extends upwardly alongside the frame; support means at said one end of the bed adapted to extend downwardly from the bed when the latter is in its extended position and forwardly from the bed when the latter is in its upright position for supporting an object to be carried on the cart; legs at the other end of the bed for supporting the bed in its extended position; and means for locking the bed to the frame in its upright position. ### Claim 2 (depends on 1) A utility cart as set forth in claim 1 wherein the axis about which the bed swings is spaced above and forwardly of the axis of rotation of the wheels. ### Claim 3 (depends on 1) A utility cart as set forth in claim 1 wherein said locking means comprises a detent assembly for selectively locking the bed in its extended and upright positions. ### Claim 4 (depends on 3) A utility cart as set forth in claim 3 wherein said detent assembly comprises a pair of openings in the frame and a detent pin on the bed receivable in either of the openings, the detent pin being receivable in one opening for locking the bed in its extended position and in the other opening for locking the bed in its upright position. ### Claim 5 (depends on 4) A utility cart as set forth in claim 4 wherein said detent pin is spring biased into the openings. ### Claim 6 (depends on 1) A utillity cart as set forth in claim 1 wherein the frame comprises a pair of parallel spaced-apart side frame members connected at their upper ends by an upper cross frame member and having a pair of support plates at their lower ends extending in parallel vertical planes forwardly from the side frame members, the bed being pivoted on the support plates for swinging between the plates between said extended and upright positions. ### Claim 7 A utility cart comprising: an upwardly extending frame; a pair of wheels journaled on the lower end of the frame at opposite sides of the frame for rotation about an axis extending transversely of the frame; a bed pivoted adjacent one of its ends on the frame at the lower end of the frame for swinging about an axis generally parallel to the axis of rotation of the wheels between an extended position in which the bed extends generally perpendicularly from the frame in a generally horizontal direction constituting the forward direction, and an upright position in which the bed extends upwardly alongside the frame; support means at said one end of the bed adapted to extend forwardly from the bed when the later is in its upright position for supporting an object to be carried on the cart; legs at the other end of the bed for supporting the bed in its extended position and adapted to extend forwardly from the bed when the bed is in its upright position; and means for selectively locking the bed to the frame in its extended and upright positions, said frame comprising a pair of parallel spaced-apart side frame members connected at their upper ends by an upper cross frame member and having a pair of support plates at their lower ends extending in parallel vertical planes forwardly from the side frame members, the front margins of said support plates being bent inwardly toward each other, the bed being pivoted on the support plates for swinging between the plates between said extended and upright positions, the bed being engageable with said margins along the length thereof when the bed is in its upright position. ### Claim 8 A utility cart comprising: an upwardly extending frame; a pair of wheels journaled on the lower end of the frame at opposite sides of the frame for rotation about an axis extending transversely of the frame; a bed pivoted adjacent one of its ends on the frame at the lower end of the frame for swinging about an axis generally parallel to the axis of rotation of the wheels between an extended position in which the bed extend genrally perpendicularly from the frame in a generally horizontal direction constituting the forward direction, and an upright position in which the bed extends upwardly alongside the frame; support means at said one end of the bed adapted to extend forwardly from the bed when the later is in its upright position for supporting an object to be carried on the cart; legs at the other end of the bed for supporting the bed in its extended position and adapted to extend forwardly from the bed when the bed is in its upright position; and means for selectively locking the bed to the frame in its extended and upright positions; the frame comprising a pair of parallel spaced-apart side frame members connected at their upper ends by an upper cross frame member and having a pair of support plates at their lower ends extending in parallel vertical planes forwardly from the side frame members, the bed being pivoted on the support plates for swinging between the plates between said extended and upright positions, said support plates being connected at their upper ends by a lower cross frame member extending between said side frame members, the back end of the bed being engageable with the bottom of the lower cross frame member when the bed is in its extended position. ### Claim 9 (depends on 6) A utility cart as set forth in claim 6 wherein said locking means comprising a detent assembly for locking the bed in its extended and upright position, said assembly comprising a pair of openings in one of said support plates and a detent pin on the bed receivable in the openings for selectively locking the bed in its extended and upright position. ### Claim 10 (depends on 1) A utility cart as set forth in claim 1 further comprising a container adapted to rest on the bed when the bed is in its extended position. ### Claim 11 (depends on 10) A utility cart as set forth in claim 10 wherein said bed comprises a generally rectangular framework and said container is box-shaped and dimensioned for extending substantially from one side of the bed to the other and substantially from the frame to the front of the bed, said container having means thereon engageable with the bed for maintaining the container on the bed. ### Claim 12 (depends on 1) A utility cart as set forth in claim 1 wherein said cart further comprises an upright adapted to be removably attached to the bed at said other end thereof when the bed is in its extended position and to extend upwardly from the bed generally parallel to the frame. ### Claim 13 (depends on 12) A utility cart as set forth in claim 12 wherein the upright and the frame are of the same width. ### Claim 14 (depends on 12) A utility cart as set forth in claim 12 wherein the frame comprises a pair of parallel spaced-apart side frame members connected at their upper ends by an upper cross frame member, said bed comprises a generally rectangular framework, and said upright comprises a pair of parallel posts extending vertically upwardly from the bed and connected at their upper ends by an upper crosspiece, the upper cross frame member of the frame and the upper crosspiece of the upright being spaced approximately the same distance above the bed. ### Claim 15 (depends on 14) A utility cart as set forth in claim 14 further comprising a shelf adapted to extend generally horizontally between the frame and the upright and to rest on said upper cross frame member and crosspiece generally parallel to the bed. ### Claim 16 (depends on 15) A utility cart as set forth in claim 15 wherein the upper cross frame member of the frame is spaced below the upper ends of the side frame members and the upper crosspiece of the upright is spaced below the upper ends of the posts. ### Claim 17 (depends on 14) A utility cart as set forth in claim 14 wherein the lower ends of the posts of the upright are receivable in sockets on the bed removably to attach the upright to the bed. ### Claim 18 (depends on 17) A utility cart as set forth in claim 17 wherein said legs at said other end of the bed are tubular, the upper ends of the legs constituting said sockets for receiving said posts. ### Claim 19 (depends on 14) A utility cart as set forth in claim 14 wherein the frame further comprises a second cross frame member extending between the side frame members below the upper cross frame member and above the bed, and said upright further conmprises a second crosspiece extending between the posts below the upper crosspiece and above the bed, the spacing between the cross frame members of the frame being approximately equal to the spacing between the crosspieces of the upright. ### Claim 20 (depends on 19) A utility cart as set forth in claim 19 further comprising a shelf adapted to rest on said second cross frame member and said second crosspiece and to extend above the bed generally parallel thereto. ### Claim 21 A utility cart comprising an upwardly extending frame, a pair of wheels journalled on the lower end of the frame for rotation about an axis extending generally transversely of the frame, a bed mounted adjacent one of its ends constituting its inner end on the frame at the lower end of the frame and extending generally perpendicularly outwardly from the frame, tubular legs at the outer end of the bed for supporting the bed, an upright removable attached to the bed at the outer end of the bed and extending upwardly from the bed generally parallel to the frame, said frame comprising a pair of spaced-apart side frame members connected by a cross frame member spaced below but adjacent to the upper ends of the side frame members, said upright comprising a pair of parallel posts extending upwardly from the bed and connected by a crosspiece spaced below but adjacent to the upper ends of said posts, the cross frame member of the frame and the crosspiece of the upright being spaced approximately the same distance above the bed, and a shelf adapted to extend between the frame and the upright and to rest on said cross frame member and crosspiece generally parallel to the bed, said shelf being liftably removable from the cart and formed for interfitting with the frame and upright thereby to maintain it in place on the cart, said legs being open at their upper ends thereby constituting sockets for receiving therein the lower ends of the posts of the upright removably to attach the upright to the bed. ### Claim 22 (depends on 21) A utility cart as set forth in claim 21 wherein each post terminates in an upper end spaced above but adjacent to said crosspiece, said posts being free of interconnection above said crosspiece for enabling the shelf to be lifted vertically and without obstruction above the upper ends of the posts for removal of the shelf from the cart. ### Claim 23 (depends on 22) A utility cart as set forth in claim 22 wherein the shelf has notches therein, the side frame members and the posts of the upright being receivable in said notches for maintaining the shelf in place on the cart. ### Claim 24 (depends on 21) A utility cart as set forth in claim 21 wherein the upper ends of said posts are spaced above said crosspiece a distance not substantially greater than the thickness of said shelf. ### Claim 25 (depends on 21) A utility cart as set forth in claim 21 wherein the upper ends of said legs at the outer end of the bed are flush with the upper surface of the bed thereby providing a flat and unobstructed bed surface extending outwardly from said frame when the upright is removed. ### Claim 26 (depends on 21) A utility cart as set forth in claim 21 wherein the frame further includes a second cross frame member extending between the side frame members below the upper cross frame member and above the bed, and said upright further includes a second crosspiece extending between the posts below the upper crosspiece and above the bed, the spacing between the cross frame members of the frame being approximately equal to the spacing between the crosspieces of the upright. ### Claim 27 (depends on 26) A utility cart as set forth in claim 26 further comprising a second shelf adapted to rest on said second cross frame member and said second crosspiece and to extend above the bed generally parallel thereto. ### Claim 28 (depends on 27) A utility cart as set forth in claim 27 wherein said second shelf is removable from the cart and formed for interfitting with said frame and upright thereby to maintain it in place on the cart. ### Claim 29 (depends on 1) A utility cart as set forth in claim 1 wherein the legs are further adapted to extend forwardly from the bed when the bed is in its upright position. ### Claim 30 (depends on 1) A utility cart as set forth in claim 1 wherein said locking means is further adapted selectively to lock the bed to the frame when the bed is in its extended position as well as when it is in its upright position.