Automatic door operator

Details Automatic door operator Automatic door operator

1999-05-28

2000-08-29

Redman, Jerry

Movable or removable closures

With operator for movably mounted closure

Coaxial of closure pivot

74 8914, E05F 1502

Patent

active

061089753

ABSTRACT:
An automatic door operator for swing doors which uses a worm gear transmission to connect the motor to a belt and pulley which in turn is connected to a spur gear and drive gear. The door arm of the swing door is connected to a double-ended shaft which is part of the drive gear. A rack and pinion gear and spring are used to provide the closing force to the door arm. The motor is mounted over the spring and the belt and pulleys are located alongside the motor which results in a compact non-handed design.

REFERENCES:
patent: 3874117 (1975-04-01), Boehm
patent: 3981203 (1976-09-01), Williams
patent: 4045914 (1977-09-01), Catlett
patent: 4220051 (1980-09-01), Catlett
patent: 4501090 (1985-02-01), Yoshida et al.
patent: 4727679 (1988-03-01), Kornbrekke et al.
patent: 4970826 (1990-11-01), Richmond et al.
patent: 5063316 (1991-11-01), E-Ming
patent: 5332279 (1994-07-01), Golemis et al.
patent: 5513467 (1996-05-01), Current et al.
patent: 5680728 (1997-10-01), Moy
patent: 5687507 (1997-11-01), Beran

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