Movable or removable closures – With operator for movably mounted closure – Operating lever or link and closure swing about parallel axes
Patent
1995-05-30
1996-05-07
Kannan, Philip C.
Movable or removable closures
With operator for movably mounted closure
Operating lever or link and closure swing about parallel axes
49139, 74 8915, E05F 1510
Patent
active
055134670
ABSTRACT:
A linear drive power door operator selectively and automatically opens and closes a door swingably mounted on a door jamb. The door operator includes a power screw disposed within a housing and a drive which powers the rotation of the power screw for moving a piston having a threaded bore threadably engaging the power screw linearly upon activation of the drive. A rack having teeth is engaged by the piston for moving the rack linearly from end-to-end. The power door operator further includes a pinion having teeth threadably engaging the teeth of the rack. The pinion is rotatable about a vertical axis upon the side-to-side linear movement of the rack. At least one link arm is pivotally connected at one of its ends to the pinion and pivotally connected at its other end to the door. A control device controls the operation of the drive for moving the door between a closed position and an open position. The control device activates the drive for moving the piston and the rack from a first position in which the door is closed to a second position in which the door is fully open, and any position in between.
REFERENCES:
patent: 3394499 (1968-07-01), Korthaus et al.
patent: 3874117 (1975-04-01), Boehm
patent: 4040144 (1977-08-01), Lasier et al.
patent: 4348835 (1982-09-01), Jones et al.
patent: 4375735 (1983-03-01), Rhoads
patent: 4394787 (1983-07-01), Lieberman
patent: 4419787 (1983-12-01), Lieberman
patent: 4878265 (1989-11-01), Nesbit
patent: 5018304 (1991-05-01), Longoria
patent: 5040331 (1991-08-01), Merendino et al.
patent: 5375374 (1994-12-01), Rohroff, Sr.
Current Andrew
Lucas Craig
Kannan Philip C.
Noe Keith F.
Palermo Robert F.
Schlage Lock Company
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