According to the embodiments described herein, a self-actuating cot can include a support frame, a pair of legs, and a hydraulic actuator. The support frame can extend from a front end to a back end. The pair of legs can be in movable engagement with the support frame. The hydraulic actuator can be
According to the embodiments described herein, a self-actuating cot can include a support frame, a pair of legs, and a hydraulic actuator. The support frame can extend from a front end to a back end. The pair of legs can be in movable engagement with the support frame. The hydraulic actuator can be in movable engagement with the pair of legs and the support frame. The hydraulic actuator can and extend and retract the pair of legs with respect to the support frame.
대표청구항▼
1. A self-actuating cot comprising a support frame, a pair of legs, and a hydraulic actuator, wherein: the support frame extends from a front end to a back end;the pair of legs is in movable engagement with the support frame;the hydraulic actuator is in movable engagement with the pair of legs and t
1. A self-actuating cot comprising a support frame, a pair of legs, and a hydraulic actuator, wherein: the support frame extends from a front end to a back end;the pair of legs is in movable engagement with the support frame;the hydraulic actuator is in movable engagement with the pair of legs and the support frame, and extends and retracts the pair of legs with respect to the support frame;the hydraulic actuator comprises a cylinder housing, a rod, and a sliding guide member;the cylinder housing defines a hydraulic cylinder aligned with a motive direction of the rod;the sliding guide member is in sliding engagement with the cylinder housing, and is in rigid engagement with the rod; andthe sliding guide member slides along a sliding direction with respect to the cylinder housing as the rod extends and retracts from the cylinder housing along the motive direction. 2. The self-actuating cot of claim 1, wherein the sliding guide member comprises a rod side that faces the rod and an outer side that is opposite the rod side, and wherein the rod side is substantially straight and the outer side comprises an arcuate portion. 3. The self-actuating cot of claim 1, wherein: the hydraulic actuator comprises a second rod and a second sliding guide member; andthe second sliding guide member is in sliding engagement with the cylinder housing, and is in rigid engagement with the second rod. 4. The self-actuating cot of claim 3, wherein the hydraulic actuator is configured to operate in a self-balancing manner that allows the rod and the second rod to extend and retract at different rates. 5. The self-actuating cot of claim 3, wherein the sliding guide member travels along an upper course and the second sliding guide member travels along a lower course. 6. The self-actuating cot of claim 5, wherein the upper course and the lower course are offset. 7. The self-actuating cot of claim 5, wherein the upper course and the lower course are substantially parallel. 8. The self-actuating cot of claim 5, wherein the rod is substantially aligned with the lower course and the second rod is substantially aligned with the upper course. 9. A self-actuating cot comprising: a support frame comprising a front end, and a back end;a pair of front legs slidingly coupled to the support frame and having front wheels and intermediate loading wheels;a pair of back legs slidingly coupled to the support frame and having back wheels; anda cot actuation system comprising a front actuator that moves the front legs and a back actuator that moves the back legs, wherein the cot actuation system is configured to automatically actuate to a seated loading position such that the support frame forms a seated loading angle between the support frame and a substantially level surface when the front wheels, the intermediate loading wheels, and back wheels are all in contact with the substantially level surface, and wherein the seated loading angle is acute and the intermediate loading wheels are located on the front legs in order to be situated between the front and back wheels when in contact with the substantially level surface; andat least one of the actuators comprise a cylinder housing, a rod, and a sliding guide member, wherein the at least one actuator comprises a transverse support platen coupled to the rod and the sliding guide member. 10. The self-actuating cot of claim 9, comprising a patient support member coupled to the support frame and operable to articulate with respect to the support frame, wherein the patient support member comprises a foot supporting portion that rotates away from the support frame and defines a foot offset angle with respect to the support frame. 11. The self-actuating cot of claim 10, wherein the foot offset angle is limited to a maximum angle that is acute. 12. The self-actuating cot of claim 11, wherein the seated loading angle is about equal to the foot offset angle. 13. The self-actuating cot of claim 10, wherein the patient support member comprises a head supporting portion that rotates away from the support frame and defines a head offset angle with respect to the support frame. 14. A self-actuating cot comprising: a support frame comprising a front end, and a back end;a pair of front legs slidingly coupled to the support frame;a pair of back legs slidingly coupled to the support frame;a front actuator in movable engagement with the front legs and the support frame, and extends and retracts the front legs with respect to the support frame;a back actuator in movable engagement with the back legs and the support frame, and extends and retracts the back legs with respect to the support frame;the front actuator and the back actuator each comprise a respective cylinder housing, a respective rod, and a respective sliding guide member;each cylinder housing defines a respective hydraulic cylinder aligned with a motive direction of the respective rod;each sliding guide member is in sliding engagement with the respective cylinder housing, and is in rigid engagement with the respective rod;each sliding guide member slides along a sliding direction with respect to the respective cylinder housing as the respective rod extends and retracts from the respective cylinder housing along the motive direction; anda cot actuation system comprising the front actuator that moves the front legs and the back actuator that moves the back legs, and a centralized hydraulic circuit configured to direct hydraulic fluid to the front actuator and the back actuator. 15. The self-actuating cot of claim 14, wherein the front actuator and the back actuator are supplied with the hydraulic fluid from a single fluid reservoir. 16. The self-actuating cot of claim 14, wherein the cot actuation system comprises a single pump motor configured to actuate both the front actuator and the back actuator with the hydraulic fluid. 17. The self-actuating cot of claim 14, wherein the cot actuation system comprises a flow control valve or an electronic switching valve in fluidic communication with the front actuator and the back actuator. 18. A self-actuating cot comprising a support frame, a pair of legs, and a hydraulic actuator, wherein: the support frame extends from a front end to a back end;the pair of legs is in movable engagement with the support frame;the hydraulic actuator is in movable engagement with the pair of legs and the support frame, and extends and retracts the pair of legs with respect to the support frame;the hydraulic actuator comprises a cylinder housing, a rod, and a sliding guide member;the cylinder housing defines a hydraulic cylinder aligned with a motive direction of the rod;the sliding guide member is in sliding engagement with the cylinder housing, and is in rigid engagement with the rod; andthe sliding guide member slides along a sliding direction with respect to the cylinder housing as the rod extends and retracts from the cylinder housing along the motive direction,wherein the hydraulic actuator comprises a transverse support platen coupled to the rod and the sliding guide member. 19. The self-actuating cot of claim 18, comprising a second sliding guide member that is in sliding engagement with the cylinder housing and is coupled to the transverse support platen, wherein the rod is coupled to the transverse support platen between the rod and the second sliding guide member. 20. The self-actuating cot of claim 18, wherein the transverse support platen of the hydraulic actuator is in movable engagement with the pair of legs, the support frame, or the pair of legs and the support frame.
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