Brakes – Operators – Spring
Patent
1994-06-03
1995-02-07
Oberleitner, Robert J.
Brakes
Operators
Spring
188330, 160 7, B60T 1304
Patent
active
053868919
ABSTRACT:
A mechanism for controlling the raising and lowering of a door comprising a speed reduction gearing, a high speed input shaft and a low speed output shaft connected to the gearing, and a governor mounted on the input shaft for regulating the input shaft's rotational speed. More particularly, the mechanism is provided with a brake having a movable brake shoe, a temperature sensitive link and an elongate member having a central portion coupled to the brake shoe. As well, the first portion of the elongate member is engageable with the temperature sensitive element and a second portion of the elongate member is engageable with the actuator. In this way, the elongate member is provided for moving the brake shoe to the release position in response to one of (1) the temperature sensitive link upon the temperature reaching a predetermined temperature and (2) the actuator.
REFERENCES:
patent: 774855 (1904-11-01), Smith
patent: 803618 (1905-11-01), Mumford
patent: 842968 (1907-02-01), McCloud
patent: 1096446 (1914-05-01), Mesker et al.
patent: 1231590 (1917-07-01), Friedlaender
patent: 1594721 (1926-08-01), Gilmore
patent: 1649797 (1927-11-01), Winn, Jr.
patent: 1658513 (1928-02-01), Bumbarger
patent: 1955826 (1934-04-01), Paul
patent: 2019084 (1935-10-01), Miller
patent: 2019085 (1935-10-01), Miller
patent: 2110231 (1938-03-01), McCloud
patent: 2390117 (1945-12-01), Michelman
patent: 2564208 (1951-08-01), Michelman
patent: 2670065 (1954-02-01), Stevens, Jr.
patent: 2939551 (1960-06-01), Hansen
patent: 2946377 (1960-07-01), Zoll et al.
patent: 2957521 (1960-10-01), Greegor
patent: 3102580 (1963-09-01), Greegor
patent: 3207273 (1965-09-01), Jurin
patent: 3512302 (1970-05-01), Sivin et al.
patent: 3613765 (1971-10-01), Sivin
patent: 3955840 (1976-05-01), Rawls et al.
patent: 4112996 (1978-09-01), Fohl
patent: 4130156 (1978-12-01), Wardlaw
patent: 4147197 (1979-04-01), Bailey et al.
patent: 4219107 (1980-08-01), Ford
patent: 4848522 (1989-07-01), Wolf
patent: 4875558 (1989-10-01), Berkhan et al.
patent: 5022452 (1991-06-01), Burrell
Anchuan Corporation
Oberleitner Robert J.
Poon Peter M.
LandOfFree
Mechanism for controlling the raising and lowering of a door does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Mechanism for controlling the raising and lowering of a door, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mechanism for controlling the raising and lowering of a door will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1105070