Clutchless screw drive door operator

Details Clutchless screw drive door operator Clutchless screw drive door operator

1995-03-24

1996-10-29

Kannan, Philip C.

Movable or removable closures

With operator for movably mounted closure

Operator drives closure along guide

49199, 192 7, 464 42, 464180, E05F 1134

Patent

active

055687040

ABSTRACT:
A garage door operator is disclosed to have a front coupling for a threaded screw of the operator and the rotor of the motor. The coupling includes a first coupling device that is a unitary coupling member with opposing recesses for receiving each of the rotor shaft and an end portion of the screw. The unitary coupling member thereby connects the screw to the motor for torque transmission from the motor. The second coupling device includes a thrust containment device that is supported on the screw, and an intermediate assembly disposed between the thrust containment device and an end portion of the guide rail of the door operator. A retainer component of the intermediate assembly restricts expansion of the thrust containment device.

REFERENCES:
patent: 2056174 (1936-10-01), Earhuff et al.
patent: 2944810 (1960-07-01), Stuettig et al.
patent: 3990802 (1976-11-01), Corona
patent: 4107877 (1978-08-01), Lee
patent: 4131830 (1978-12-01), Lee et al.
patent: 4352585 (1982-10-01), Spalding
patent: 4362412 (1982-12-01), Kunz
patent: 4649329 (1987-03-01), Wickham
patent: 4821456 (1989-04-01), Nogaki
patent: 5085094 (1992-02-01), Clawson et al.
patent: 5152631 (1992-10-01), Bauer
Pp. 7, 8, and 25 of the Stanley Owner's Manual for its screw drive door opener model No. SD550.F00.

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