Boots – shoes – and leggings
Patent
1997-02-26
1999-09-21
Grant, William
Boots, shoes, and leggings
318261, 318265, G05B 1918, H02P 100
Patent
active
059562498
ABSTRACT:
A method is disclosed for selective alteration and control of door movement modes utilizing an apparatus that is primarily non-hydraulic and incorporated with a known mechanism which is functional independently from the apparatus in one mode of operation and which includes a piston for controlling door closing characteristics by selected fluid flow within the mechanism. The apparatus includes a motor driven lead screw having a linearly movable shuttle unit mounted thereon, the shuttle unit being positioned relative to the piston of the mechanism to accommodate nonattached contact with the piston to urge the piston, when the shuttle unit is moved, in a direction that will at least provide selective assistance with door opening in another mode of operation. Operation of the apparatus is controlled by programming of a related controller including non-volatile memory.
REFERENCES:
patent: 1684704 (1928-09-01), Hubbell
patent: 2256613 (1941-09-01), Forman et al.
patent: 3127160 (1964-03-01), Wallmann
patent: 3129936 (1964-04-01), Carlson
patent: 3874117 (1975-04-01), Boehm
patent: 4040144 (1977-08-01), Lasier et al.
patent: 4220051 (1980-09-01), Catlett
patent: 4222147 (1980-09-01), Burnett, Jr.
patent: 4339842 (1982-07-01), Fontana et al.
patent: 4348835 (1982-09-01), Jones et al.
patent: 4429490 (1984-02-01), Zunkel
patent: 4498033 (1985-02-01), Aihara et al.
patent: 4727679 (1988-03-01), Kornbrekke et al.
patent: 4793023 (1988-12-01), Simpson et al.
patent: 4831509 (1989-05-01), Jones et al.
patent: 4918864 (1990-04-01), Lunenschloss et al.
patent: 4952080 (1990-08-01), Boiucaner et al.
patent: 4995194 (1991-02-01), Schultze et al.
patent: 5162711 (1992-11-01), Heckler
patent: 5278480 (1994-01-01), Murray
Andrea Davide
Beran Mark A.
Baumgardner Carolyn T.
Dorma Door Controls Inc.
Grant William
LandOfFree
Method for electromechanical control of the operational paramete does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for electromechanical control of the operational paramete, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for electromechanical control of the operational paramete will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-86267