Embodiments of a method of operation of a roll-in push cot for transport onto a first surface comprising initially loading the roll-in cot onto a first surface thereby releasing automatically at least one leading leg, continuing of loading the roll-in cot onto the first surface to move a front carri
Embodiments of a method of operation of a roll-in push cot for transport onto a first surface comprising initially loading the roll-in cot onto a first surface thereby releasing automatically at least one leading leg, continuing of loading the roll-in cot onto the first surface to move a front carriage member toward a front actuator, such that movement of the front carriage member triggers the front actuator that releases a middle release lever, thereby initiating the release of at least one trailing leg, supporting the weight of the cot at least partially in order to disengage a locking mechanism for the at least one trailing leg, and loading the cot in order to move a rear carriage member in conjunction with folding of the at least one trailing leg and thereby trigger a reset actuator and release a latch pin to engage the rear carriage member when the trailing and leading legs of the roll-in push cot are in a fully folded position on the first surface.
대표청구항▼
1. A method of operation of a roll-in push cot for transport onto a first surface, the method comprising: initially loading the roll-in cot onto a first surface thereby releasing automatically at least one leading leg;continuing of loading the roll-in cot onto the first surface to move a front carri
1. A method of operation of a roll-in push cot for transport onto a first surface, the method comprising: initially loading the roll-in cot onto a first surface thereby releasing automatically at least one leading leg;continuing of loading the roll-in cot onto the first surface to move a front carriage member toward a front actuator, such that movement of the front carriage member triggers the front actuator that releases a middle release lever, thereby initiating the release of at least one trailing leg, wherein the middle release lever is coupled to the front actuator by a linkage and a spring such that when the front actuator is triggered, the spring is placed under tension thereby preventing movement of the middle release lever until a locking mechanism is disengaged;supporting the weight of the cot at least partially in order to disengage the locking mechanism for the at least one trailing leg such that the tension in the spring is released and the middle release lever is able to move; andloading the cot in order to move a rear carriage member in conjunction with folding of the at least one trailing leg and thereby trigger a reset actuator and release a latch pin to engage the rear carriage member when the trailing and leading legs of the roll-in push cot are in a fully folded position on the first surface;wherein the roll-in push cot comprises a support frame comprising a pair of lateral sides extending between a front end and a rear end and supporting the weight at least partially is performed by an operator that assumes the weight of the cot by lifting of the rear end of the roll-in cot. 2. The method of claim 1, wherein the front actuator and reset actuator are deactivated while initially loading the roll-in push cot onto the first surface. 3. The method of claim 1, wherein releasing of the middle release lever does not release the at least one latch pin. 4. The method of claim 1, wherein the triggering of the reset actuator pulls a middle reset switch that resets the at least one latch pin. 5. The method of claim 1, wherein the roll-in push cart comprises a pair of slidable tracks disposed in the lateral sides. 6. The method of claim 5, wherein the front carriage member is slidingly disposed within the pair of slidable tracks at the front end of the support frame, wherein the sliding motion of the front carriage member defines a motion path. 7. The method of claim 5, wherein the rear carriage member is slidingly coupled to the pair of slidable tracks at the rear end of the support frame and the reset actuator is disposed on the support frame in a motion path defined by the rear carriage member such that movement of the rear carriage member in conjunction with the folding of the at least one trailing leg triggers the reset actuator, the triggering of the reset actuator being configured to lock the roll in cot when the trailing and leading legs of the cot are in a folded position. 8. The method of claim 1, wherein the rear carriage member comprises a bracket with curved projections, and wherein the roll-in push cot comprises a latch pin, the latch pin being configured to lock the trailing legs by forming an interference fit with the curved projections of the rear carriage member bracket. 9. The method of claim 8, wherein the interference fit between the latch pin and the bracket is disengaged by an operator supporting a portion of the weight of the roll in cot, the disengagement of the latch pin triggering the release of the trailing legs. 10. The method of claim 1, the roll-in push cot further comprising at least one load wheel disposed at the front end of the support frame. 11. The method of claim 10, the roll-in push cot further comprising a swivel lock release lever disposed at the front end of the support frame, whereby the swivel lock release lever unlocks the at least one front load wheel to allow swivel motion. 12. The method of claim 1, the roll-in push cot further comprising at least one intermediate load wheel disposed on the support frame between the leading and trailing legs. 13. The method of claim 1, the roll-in push cot further comprising at least one load wheel disposed at the rear end of the support frame. 14. The method of claim 13, the roll-in push cot further comprising a swivel lock release lever disposed at the rear end of the support frame, whereby the swivel lock release lever unlocks the at least one rear load wheel to allow swivel motion. 15. The method of claim 1, the roll-in push cot further comprising a release handle disposed at the rear end of the support frame, whereby the release handle allows for a stretcher to be removed from the cot. 16. The method of claim 1, the roll-in push cot further comprising a pair of slam latches mechanically fitted to a linkage component coupled to the pair of lateral sides, wherein the latches secure a stretcher to the cot. 17. A method of operation of a roll-in push cot for transport onto a first surface, the method comprising: initially loading the roll-in push cot onto a first surface thereby releasing automatically at least one leading leg, wherein the roll-in push cot comprises a support frame comprising a pair of lateral sides extending between a front end and a rear end;continuing of loading the roll-in cot onto the first surface to move a front carriage member toward a front actuator, such that movement of the front carriage member triggers the front actuator that releases a middle release lever, thereby initiating the release of at least one trailing leg, wherein the middle release lever is coupled to the front actuator by a linkage and a spring such that when the front actuator is triggered, the spring is placed under tension thereby preventing movement of the middle release lever until a locking mechanism is disengaged;supporting the weight of the cot at least partially in order to disengage the locking mechanism for the at least one trailing leg such that the tension in the spring is released and the middle release lever is able to move, wherein supporting the weight at least partially is performed by an operator that assumes the weight of the cot by lifting of the rear end of the roll-in cot; andloading the cot in order to move a rear carriage member in conjunction with folding of the at least one trailing leg and thereby trigger a reset actuator and release a latch pin to engage the rear carriage member when the trailing and leading legs of the roll-in push cot are in a fully folded position on the first surface, wherein the rear carriage member is slidingly coupled to the pair of slidable tracks at the rear end of the support frame and the reset actuator is disposed on the support frame in a motion path defined by the rear carriage member such that movement of the rear carriage member in conjunction with the folding of the at least one trailing leg triggers the reset actuator. 18. The method of claim 17, wherein the rear carriage member comprises a bracket with curved projections, and wherein the roll-in push cot comprises a latch pin, the latch pin being configured to lock the trailing legs by forming an interference fit with the curved projections of the rear carriage member bracket. 19. The method of claim 18, wherein the interference fit between the latch pin and the bracket is disengaged by an operator supporting a portion of the weight of the roll in cot, the disengagement of the latch pin triggering the release of the trailing legs.
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이 특허에 인용된 특허 (6)
Lambarth,Clifford E.; Way,Christopher B., Ambulance cot loading and unloading device.
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