Patent ID: 7389552
Filing Date: 2008-06-24
Classification: A61G,B62B

Abstract:
1. A hydraulically powered cot, wherein said cot comprises: A) a pair of frames, wherein said pair of frames consist of: wherein said top frame is attached to a team lift rail, wherein said team lift rail surrounds the foot-end region and both sides of said top frame, wherein said team lift rail located on one side of said top frame is attached to said team lift rail located on the other side of said top frame via said plurality of cross tubes and cross tube castings, wherein said cross tubes are fastened to said cross tube castings, wherein said castings are fastened to said top frame and comprise an orifice into and/or through which said team lift rails extend; B) a patient litter formed of roto-molded plastic, wherein said patient litter is a four section litter comprising lower leg, upper leg, lower torso and upper torso sections; C) a fixed leg assembly comprising a pair of fixed-length legs, wherein said fixed-length legs are parallel to each other, and wherein said fixed-length legs are pivotably connected to said foot-end cross tube of said base frame, and wherein said fixed-length legs are pivotably attached to said head-end cross tube of said top frame; D) a telescoping leg assembly comprising a pair of telescoping legs, wherein said telescoping legs are parallel to each other, and wherein said telescoping legs comprise: wherein said roller bearings reduce frictional force associated with increase in length of said telescoping legs that occurs with raising of said patient litter and the frictional force associated with the decrease in length of said telescoping legs that occurs with lowering of said patient litter; E) a hydraulic system, wherein said hydraulic system comprises a cylinder powered by a hydraulic unit, wherein one end of said cylinder is attached to a cylinder base pivot, wherein said cylinder base pivot is pivotably attached to said foot-end cross tube of said base frame, and wherein the other end of said cylinder is attached to a cylinder cross member, wherein said cylinder cross member is fastened to each of said main rails of said telescoping legs; F) a tip angle monitoring, recording and alert system, wherein said tip angle system comprises: wherein said system further comprises a tip angle algorithm, wherein said processor uses said algorithm to determine in real-time the cot tip angle of said cot; G) a non-series wired, two battery power system, wherein said system powers the hydraulic and electrical components of said cot; and H) a control panel, wherein said control panel comprises icon indicators for service information, hydraulic system information, and tip angle information; wherein said cot is configured to raise and lower a subject.