Ambulance cot and loading and unloading system

• US 8,973,963 B2
• Filed: 05/07/2013
• Issued: 03/10/2015
• Est. Priority Date: 10/02/2009
• Status: Active Grant

• Current Assignee: Stryker Corporation
• Original Assignee: Stryker Corporation
• Inventors: Lambarth, Clifford Edwin, Souke, Chad Conway, Nahavandi, Kurosh, Downey, Adam Darwin, Cox, Robert Gregory
• Primary Examiner(s): Patel, Kiran B
• Application Number:
  US13/888,654
• Publication Number:
  US 20140023469A1
• Time in Patent Office: 672 Days
• Field of Search: 296/20, 296/19, 307/66, 307/104, 362/183, 320/107, 320/108, 320/137, 562/0, 5 8/61, 561/1, 562/1, 562/5, 562/6, 562/7, 561/8
• US Class Current: 296/20
• CPC Class Codes: A61G 1/00 Stretchers
• CPC Class Codes: A61G 1/02 with wheels
• CPC Class Codes: A61G 1/0212 2 pairs having wheels within a pair on the same position in longitudinal direction, e.g. on the same axis
• CPC Class Codes: A61G 1/0237 having at least one swivelling wheel, e.g. castors
• CPC Class Codes: A61G 1/0262 having loading wheels situated in the front during loading
• CPC Class Codes: A61G 1/0293 stretcher supports with wheels, e.g. used for stretchers without wheels stretcher supports without wheels A61G1/06
• CPC Class Codes: A61G 1/0567 folding in x-shape
• CPC Class Codes: A61G 1/06 Supports for stretchers, e.g. to be placed in or on vehicles A61G1/0293 takes precedence; supports fixed to a vehicle A61G3/02 - A61G3/08
• CPC Class Codes: A61G 2203/30 characterised by sensor means
• CPC Class Codes: A61G 2203/42 for inclination
• CPC Class Codes: A61G 2203/44 for weight
• CPC Class Codes: A61G 3/0236 by pivoting the support about a horizontal axis
• CPC Class Codes: A61G 3/0254 by moving the stretcher on a horizontal path, e.g. sliding or rolling
• CPC Class Codes: A61G 3/0272 by support protruding from the vehicle
• CPC Class Codes: A61G 3/029 by powered support
• CPC Class Codes: A61G 3/0833 using other support
• CPC Class Codes: A61G 3/0875 Securing stretchers, e.g. fastening means
• CPC Class Codes: A61G 3/0883 by preventing lateral movement, e.g. tracks
• CPC Class Codes: A61G 3/0891 by preventing longitudinal movement
• CPC Class Codes: B65G 2201/0214 Articles of special size, shape or weigh
• CPC Class Codes: B65G 2203/0283 : Position of the load carrier
• CPC Class Codes: B65G 2203/042 : Sensors
• CPC Class Codes: B65G 2812/12 : Conveyors with reciprocating means
• CPC Class Codes: B65G 2814/0302 : Central control devices
• CPC Class Codes: B65G 35/06 : comprising a load-carrier moving along a path, e.g. a closed path, and adapted to be engaged by any one of a series of traction elements spaced along the path effecting drive at two or more points spaced along the length of an endless conveyor B65G23/32
• CPC Class Codes: B65G 67/04 : Loading land vehicles loading or unloading boats to or from land vehicles B60P3/10
• CPC Class Codes: B65G 67/24 : Unloading land vehicles

Abstract

An ambulance cot and cot loading and unloading system for an emergency vehicle comprises a cot having a head end, a base for mounting to a deck of an emergency vehicle, a track mounted for linear movement along said base, and an arm mounted for linear movement along said track from a retracted position to an extended position. The arm is and configured to engage the cot, and wherein when the track is extended along the base and the arm is extended along the track the arm is extended from the base in an extended position and is configured for lifting the cot and providing cantilevered support to the cot while in the extended position.

Claims

1. An ambulance cot and cot loading and unloading system for an emergency vehicle comprising:

a cot having a head end;

a base for mounting to a deck of an emergency vehicle;

a track mounted for linear movement along said base;

an arm mounted for linear movement along said track from a retracted position to an extended position and configured to engage said cot; and

wherein when said track is extended along said base and said arm is extended along said track said arm is extended from said base in an extended position and is configured for lifting said cot and providing cantilevered support to said cot while in said extended position.

2. The ambulance cot and cot loading and unloading system according to claim 1, wherein said cot has a footprint, said track being within said footprint of said cot at least at said head end of said cot when said cot is engaged by said arm and retracted along said base to said fully retracted position.

3. The ambulance cot and cot loading and unloading system according to claim 1, further comprising a drive mechanism for moving said arm.

4. The ambulance cot and cot loading and unloading system according to claim 3, wherein said arm includes a plurality of bearings for engaging the emergency vehicle deck when said arm is moved along said base.

5. The ambulance cot and cot loading and unloading system according to claim 3, wherein said arm is pivotally mounted to a frame, said frame mounted for linear movement along said track.

6. The ambulance cot and cot loading and unloading system according to claim 1, said track including at least one latch, which is configured to allow the arm to fully traverse the track before said track moves relative to the base.

7. The ambulance cot and cot loading and unloading system according to claim 1, further comprising a series of latches, one of said latches being adapted to lock said track to said base and another of said latches being adapted to lock said arm to said track, and said latches being adapted to selectively disengage and engage to allow said arm to move relative to said track while said track is locked to said base but to allow said track to be unlocked from said base and instead locked to said arm so that said arm and said track move in unison along said base.

8. The ambulance cot and cot loading and unloading apparatus according to claim 5, wherein said arm and said frame form a trolley, said cot including at least one engagement structure, said trolley being adapted to releasably engage said engagement structure to thereby engage said cot.

9. The ambulance cot and cot loading and unloading apparatus according to claim 8, wherein said engagement structure is at a head end of said cot.

10. The ambulance cot and cot loading and unloading system according to claim 8, wherein said trolley includes a latch for engaging said engagement structure.

11. The ambulance cot and cot loading and unloading apparatus according to claim 8, said cot includes a pair of pins, said trolley being adapted to releasably engage said pair of pins to thereby engage said cot.

12. The ambulance cot and cot loading and unloading system according to claim 11, wherein said trolley includes a pair of latches for engaging said pins.

13. The ambulance cot and cot unloading and loading system according to claim 12, further comprising a control system, said control system adapted to selectively unlatch at least one of said latches.

14. The ambulance cot and cot loading and unloading system according to claim 13, wherein said control system includes a wireless transmitter, and said trolley includes a control system with a receiver for receiving a signal from said wireless transmitter.

15. The ambulance cot and cot loading and unloading system according to claim 14, wherein said control system of said trolley controls said drive mechanism based on a signal from said control system of said cot.