Coupling system for the motor drive in an adjustable...

Details Coupling system for the motor drive in an adjustable... Coupling system for the motor drive in an adjustable...

A - Human Necessities

61

G

5/17

A61G 7/00 (2006.01) A47C 17/00 (2006.01) A61G 7/015 (2006.01) F16D 27/118 (2006.01)

Patent

CA 1186103

COUPLING SYSTEM FOR THE MOTOR DRIVE IN AN ADJUSTABLE MOTORIZED HOSPITAL BED Abstract: Different hospital bed functions or adjustments (such as high-low, back and knee adjustments) may be made by employing a single reversible motor (49) to drive selected ones of a series of adjusting mechanisms (16,18,39-43,44-46). The adjusting mechanisms may be clutched, individually or simul- taneously, to the motor drive in a transmission and the motor may be run in a selected direction in order to position the hospital bed as desired. Momentarily reversing the direction of motor rotation ensures that all of the clutches in the transmission will be disengaged except those that have been actuated. The motor is momentarily reversed upon the initial operation of any function or functions (206,212,218-224,231,272,206), and is again momentarily reversed upon the deactivation of any function while other functions continue to operate. With this arrangement, if any deactuated clutch has locked or latched into an engaged position, it will be quickly released or unlocked so only the desired bed functions will operate.

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