A security cart includes a rear wall, a wheeled base frame connected to the rear wall and a base shelf pivotable between a horizontal position and a raised position. A first sidewall and a first door pivotally connected to the first sidewall are movable from locked positions with the base shelf to a
A security cart includes a rear wall, a wheeled base frame connected to the rear wall and a base shelf pivotable between a horizontal position and a raised position. A first sidewall and a first door pivotally connected to the first sidewall are movable from locked positions with the base shelf to a folded position forwardly of the rear wall. A second sidewall and a second door pivotally connected to the second sidewall are movable from locked positions to a folded position forwardly of the folded first sidewall and first door. The base shelf is movable from the horizontal position to the raised position, and retained against the folded first sidewall and the first door and the folded second sidewall and second door.
대표청구항▼
1. A security cart movable among transport, loading and collapsed conditions comprising: a rear wall having a pair of side extensions projecting forwardly therefrom and a bottom supporting member extending forwardly from the rear wall in support of the side extensions;a base frame having a pair of d
1. A security cart movable among transport, loading and collapsed conditions comprising: a rear wall having a pair of side extensions projecting forwardly therefrom and a bottom supporting member extending forwardly from the rear wall in support of the side extensions;a base frame having a pair of diverging limbs interconnected together at front ends thereof by a front cross piece, the limbs having front ends provided with a set of front wheels and rear ends provided with a set of rear wheels supported beneath the bottom supporting member of the rear wall;a base shelf supported in a horizontal load-bearing position upon the base frame and pivotally mounted about a rear edge of the base shelf to the bottom supporting member of the rear wall for movement to a raised position;a first sidewall pivotally connected to one of the side extensions of the rear wall and to the bottom supporting member, the first sidewall being pivoted between a first position locked and supported on one side edge of the base shelf, and a second position folded parallel to the rear wall;a first door pivotally attached to the first sidewall, the first door being pivoted between a first position locked to the base shelf, and a second position unlocked from the base shelf and folded with the first sidewall parallel to the rear wall;a second sidewall pivotally connected to the other of the side extensions of the rear wall and to the bottom supporting member, the second sidewall being pivoted between a first position locked and supported on another side edge of the base shelf, and a second position folded parallel to the rear wall and forwardly of the first door in its second position;a second door pivotally attached to the second sidewall, the second door being pivoted between a first position locked to the base shelf, and a second position unlocked from the base shelf and folded with the second sidewall parallel to the rear wall and forwardly of the first sidewall in its second position; andthe base shelf being pivoted from the horizontal position to the raised position for retaining the first sidewall, the first door, the second sidewall and the second door in their second positions when the cart is in the collapsed,wherein the base shelf lies forwardly of, and the bottom supporting member lies beneath and supports: the first sidewall, the first door, the second sidewall and the second door in their second positions. 2. The security cart of claim 1, wherein the rear wall is provided with at least one mounting bracket for enabling securement of an e-track strap on the rear wall. 3. The security cart of claim 1, wherein at least one of the wheels includes a braking mechanism for permitting and preventing rolling travel of the cart. 4. The security cart of claim 3, wherein the braking mechanism includes a brake pedal attached to a hex rod received in a cam element of a cam mechanism. 5. The security cart of claim 4, wherein the cam element is engagable with a spring-biased plunger joined to a brake shoe which is engagable and disengagable with a rolling surface of the one of the wheels. 6. The security cart of claim 1, wherein a front edge of the base shelf includes a front retaining bracket for retaining the first and second doors in the locked position. 7. The security cart of claim 1, wherein the side edges of the base shelf include side retaining brackets for holding the first and second sidewalls in the locked position supported upon the base shelf. 8. The security cart of claim 7, wherein each of the side retaining brackets include a locking aperture, a ramp portion leading to the locking aperture and a stop tab. 9. The security cart of claim 7, wherein the first sidewall includes a first latching rod arrangement engagable and disengagable with one of the side retaining brackets. 10. The security cart of claim 9, wherein the second sidewall includes a second latching rod arrangement engagable and disengagable with the other of the side retaining brackets. 11. The security cart of claim 10, wherein the first door includes a third latching rod arrangement engagable and disengagable with the front retaining bracket. 12. The security cart of claim 11, wherein the second door includes a fourth latching rod arrangement engagable and disengagable with the front retaining bracket. 13. The security cart of claim 1, wherein the second sidewall includes a retaining latch arrangement for holding the base shelf in the raised position. 14. The security cart of claim 1, wherein the second door includes an upper door latching pin arrangement for holding upper ends of the first door and the second door together in their first positions locked to the base shelf. 15. The security cart of claim 14, wherein the first door includes a receiving portion engagable and disengagable with the upper door latching pin arrangement on the second door. 16. The security cart of claim 15, wherein the receiving portion includes a U-shaped bracket engagable with an angled bracket of the upper door latching pin arrangement for preventing misalignment of the first and second doors at upper ends thereof. 17. The security cart of claim 1, wherein e-track straps are provided internally and externally of the rear wall and the first and second sidewalls. 18. The security cart of claim 1, wherein multiple carts in the collapsed position are configured to be nested relative to one another. 19. The security cart of claim 1, wherein the first door is pivotable to a third position folded upon an outer surface of the first sidewall. 20. The security cart of claim 1, wherein the second door is pivotable to a third position folded upon an outer surface of the second sidewall. 21. A security cart movable among transport, loading and collapsed conditions comprising: a rear wall having a pair of side extensions projecting forwardly therefrom and a bottom supporting member extending forwardly from the rear wall in support of the side extensions;a base frame having a pair of diverging limbs interconnected together at front ends thereof by a front crosspiece, the limbs having front ends provided with a set of front wheels, and rear ends provided with a set of rear wheels supported beneath the bottom supporting member of the rear wall;a base shelf supported in a horizontal load-bearing position upon the base frame and pivotally mounted about a rear edge of the base shelf to the bottom supporting member of the rear wall for movement to a raised position;a first sidewall pivotally connected to one of the side extensions of the rear wall and to the bottom supporting member, the first sidewall being pivoted between a first position locked and supported on one edge of the base shelf and a second position folded parallel to the rear wall;a first door pivotally attached to the first sidewall, the first door being pivoted between a first position locked to the base shelf, and a second position unlocked from the base shelf and folded with the first sidewall parallel to the rear wall;a second sidewall pivotally connected to the other of the side extensions of the rear wall and to the bottom supporting member, the second sidewall being pivoted between a first position locked and supported on another side edge of the base shelf, and a second position folded parallel to the rear wall and forwardly of the first door in its second position;a second door pivotally attached to the second sidewall, the second door being pivoted between a first position locked to the base shelf, and a second position unlocked from the base shelf and folded with the second sidewall parallel to the rear wall and forwardly of the first sidewall in its second position; andthe base shelf being pivoted from the horizontal position to the raised position for retaining the first sidewall, the first door, the second sidewall, and the second door in their second positions when the cart is in the collapsed condition,wherein the second sidewall is provided with a retaining latch arrangement for holding the base shelf in the raised, andwherein the base shelf lies forwardly of, and the bottom supporting member lies beneath and supports: the first sidewall, the first door, the second sidewall and the second door in their second positions. 22. The security cart of claim 21, wherein, with the base shelf in the raised position, the retaining latch arrangement is movable about a vertical axis from a first position lying against the second sidewall to a second position swung away from the second sidewall and a third position engaged with the base shelf. 23. The security cart of claim 22, wherein the retaining latch arrangement includes a spring biased to hold the retaining latch arrangement in the first and third positions. 24. The security cart of claim 21, wherein latching rod arrangements are provided on the first sidewall, the first door, the second sidewall, and the second door, and are engagable and disengagable with retaining brackets on the base shelf. 25. A security cart movable among transport, loading and collapsed conditions comprising: a rear wall having a pair of side extensions projecting forwardly therefrom and a bottom supporting member extending forwardly from the rear wall in support of the side extensions;a base frame having a pair of diverging limbs interconnected together at front ends thereof by a front crosspiece, the limbs having front ends provided with a set of front wheels and rear ends provided with a set of rear wheels supported beneath the bottom supporting member of the rear wall;a base shelf supported in a horizontal load-bearing position upon the base frame and pivotally mounted about a rear edge of the base shelf to the bottom supporting member of the rear wall for movement to a raised position;a first sidewall pivotally connected to one of the side extensions of the rear wall and to the bottom supporting member, the first sidewall being pivoted between a first position locked and supported on one side edge of the base shelf and a second position folded parallel to the rear wall, the first sidewall being provided with a first latching rod arrangement having a first latching rod;a first door pivotally attached to the first sidewall, the first door being pivoted between a first position locked to the base shelf, and a second position unlocked from the base shelf and folded with the first sidewall parallel to the rear wall;a second sidewall pivotally connected to the other of the side extensions of the rear wall and to the bottom supporting member, the second sidewall being pivoted between a first position locked and supported on another side edge of the base shelf, and a second position folded parallel to the rear wall and forwardly of the first door in its second position, the second sidewall being provided with a second latching rod arrangement provided with a second latching rod;a second door pivotally attached to the second sidewall, the second door being pivoted between a first position locked to the base shelf, and a second position unlocked from the base shelf and folded with the second sidewall parallel to the rear wall and forwardly of the first sidewall in its second position; andthe base shelf being pivoted from the horizontal position to the raised position for retaining the first sidewall, the first door, the second sidewall and the second door in their second positions when the cart is in the collapsed condition,wherein the base shelf has opposed side edges, each being provided with a side retaining bracket configured with a locking aperture, a ramped portion leading to the locking aperture and a stop tab, andwherein each latching rod is engagable and disengagable with the ramped portion and the locking aperture, and each stop tab prevents each of the first and second sidewalls from swinging outwardly away from the base shelf. 26. A security cart movable among transport, loading and collapsed conditions comprising: a rear wall having a pair of side extensions projecting forwardly therefrom and a bottom supporting member extending forwardly from the rear wall in support of the side extensions;a base frame provided with a set of wheels;a base shelf supported in a horizontal load-bearing position upon the base frame and pivotally mounted about a rear edge of the base shelf to the bottom supporting member of the rear wall for movement to a raised position;a first sidewall pivotally connected to one of the side extensions of the rear wall, the first sidewall being pivoted between a first position locked and supported on one side edge of the base shelf, and a second position folded parallel to the rear wall;a first door pivotally attached to the first sidewall, the first door being pivoted between a first position locked to the base shelf, and a second position folded with the first sidewall parallel to the rear wall;a second sidewall pivotally connected to the other of the side extensions of the rear wall and to the bottom supporting member, the second sidewall being pivoted between a first position locked and supported on another side edge of the base shelf, and a second position folded parallel to the rear wall and forwardly of the first door in its second position;a second door pivotally attached to the second sidewall, the second door being pivoted between a first position locked to the base shelf, and a second position folded with the second sidewall parallel to the rear wall and forwardly of the first sidewall in its second position; andthe base shelf being pivoted from the horizontal position to the raised position for retaining the first sidewall, the first door, the second sidewall and the second door in their second positions when the cart is in the collapsed,wherein the base shelf lies forwardly of, and the bottom supporting member lies beneath and supports: the first sidewall, the first door, the second sidewall and the second door in their second positions.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.