Coupling system for the motor drive in an adjustable motorized h

Details Coupling system for the motor drive in an adjustable motorized h Coupling system for the motor drive in an adjustable motorized h

1981-09-01

1984-09-25

Grosz, Alexander

Beds

Sofa bed

Reverting back

5 66, 5 60, 192 482, 192 488, A61G 706

Patent

active

044728468

ABSTRACT:
Different hospital bed functions or adjustments (such as high-low, back and knee adjustments) may be made by employing a single reversible motor to drive selected ones of a series of adjusting mechanisms. The adjusting mechanisms may be clutched, individually or simultaneously, 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, and is again momentarily reversed upon the reactivation 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.

REFERENCES:
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patent: 2847629 (1958-08-01), Schaefer
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patent: 3129607 (1964-04-01), Schaefer
patent: 3290956 (1966-12-01), Black et al.
patent: 3913153 (1975-10-01), Adams et al.
patent: 3921048 (1975-11-01), Padgitt
patent: 4065707 (1977-12-01), Becker
patent: 4094024 (1978-06-01), Benoit et al.
patent: 4110856 (1978-09-01), Benoit et al.
patent: 4138630 (1979-02-01), Graham
patent: 4324010 (1982-04-01), Houlberg et al.

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