Movable or removable closures – With operator for movably mounted closure – Operating lever or link and closure swing about parallel axes
Patent
1995-09-29
1997-11-18
Redman, Jerry
Movable or removable closures
With operator for movably mounted closure
Operating lever or link and closure swing about parallel axes
74 8915, 49339, E05F 1124
Patent
active
056875070
ABSTRACT:
Apparatus is are disclosed for selective alteration and control of door movement modes, the apparatus being 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.
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: 4339848 (1982-07-01), Burnett, Jr.
patent: 4348835 (1982-09-01), Jones et al.
patent: 4429490 (1984-02-01), Zunkel
patent: 4727679 (1988-03-01), Kornbrekke et al.
patent: 4793023 (1988-12-01), Simpson et al.
patent: 4952080 (1990-08-01), Boiucaner et al.
patent: 4995194 (1991-02-01), Schultze et al.
Dorma Door Controls Inc.
Redman Jerry
LandOfFree
Apparatus for selective alteration of operating parameters of a does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for selective alteration of operating parameters of a , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for selective alteration of operating parameters of a will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1557048