Electricity: motive power systems – Automatic and/or with time-delay means – Motor load – armature or primary or secondary circuit current
Patent
1980-12-15
1984-01-31
Weldon, Ulysses
Electricity: motive power systems
Automatic and/or with time-delay means
Motor load, armature or primary or secondary circuit current
318265, 318470, G05B 500
Patent
active
044292651
ABSTRACT:
A motor driven winding mechanism suitable for a vehicle panel or the like, said window being movable by means of a raising and lowering mechanism (41) having an operating shaft (50) thereon which is rotatable to effect raising and lowering of the window, includes a reduction gear unit (10-30) drivingly coupled to the motor and to be mounted on the operating shaft for rotating that shaft, and sensing means (52-62; 72-80) for sensing rotation of the gear unit about that shaft due to reactive torque produced in the gear unit during operation and controlling operation of the motor in accordance therewith, for example, by de-energizing or reversing the motor upon a predetermined rotation being sensed. The sensing means senses predetermined displacement of the reduction gear unit around the operating shaft axis against the action of a spring (60, 80) resulting from reactive torque produced therein.
REFERENCES:
patent: 2329280 (1943-09-01), Lunken et al.
patent: 2407537 (1946-09-01), Chapman
patent: 2600568 (1952-06-01), Nelson
patent: 2621926 (1952-12-01), Rossmann et al.
patent: 2763797 (1956-09-01), Dean
patent: 3404485 (1968-10-01), Henderson et al.
patent: 3662491 (1972-05-01), Boyriven
patent: 3742646 (1973-07-01), Piech
Smiths Industries Public Limited Company
Weldon Ulysses
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