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US 7,730,579 B2Granted
Door closure apparatus
OwnerThomas Edward Coeinventor
Life of this patent
Estimating the term…
Abstract
A door holder and a door closer and, in particular, and improvements in door holders and closers for use in screen doors, storm doors or any type of door which has the need for a device for maintaining the door in a particular orientation and/or for self-closing of the door.
Claims7
A door closer (10) comprising:
- a frame bracket (7) and a door bracket (4);
- a spring-loaded cylinder (12) and piston rod assembly (16) extendable between an open and a closed positions;
- a door-waiter (34) pivotably supported adjacent a first end (18) of the piston rod (16) connected to one of the frame bracket and the door bracket;
- the door-waiter (34) is capable of retaining the spring-loaded cylinder (12) and piston rod assembly (16) by rotating about its pivotal support adjacent the first end (18) of the piston rod (16) and engaging an at least one radial step (66) formed along an inner wall of the door-waiter (34) with an end surface of the cylinder (12) allowing the door to be held in at least one partially opened position without full extension of the piston rod assembly;
- and
- wherein a release lever (82) is pivotably supported at a pivot joint adjacent the first end (18) of the piston rod (16) and a push rod (84) abutting the release lever (82) and positioned substantially axially aligned along the inner sidewall (37) between the door-waiter (34) and the cylinder (12) and the push rod (84) disengages the end surface of the cylinder (12) from the at least one radial step (66).
3 more elements
A method of maintaining a door closure in a partially open position comprising the steps of:
- mounting a frame bracket on a door frame (7) and a door bracket on a door;
- supporting a spring-loaded cylinder (12) and piston rod assembly (16) between the frame bracket and the door bracket;
- attaching a cylinder housing (34) at least partially encompassing the cylinder and piston rod assembly and pivotably supporting the cylinder housing adjacent a first end (18) of the piston rod (16);
- and
- providing the cylinder housing with a first end pivotably supported adjacent the first end of the piston rod and a second end defining at least one radial step (66) formed on an inner wall of the cylinder housing for abutting an end of the cylinder, holding the door in the partially open position;
- pivotably supporting a release lever at a pivot joint relative to the cylinder housing (34);
- and
- actuating a push rod (84) abutting the lever and positioned substantially axially aligned between the cylinder housing (34) and the cylinder to disengage the abutting end of the cylinder with any radial step formed in the door-waiter cylinder housing (34) and move the door closure to a closed position.
5 more elements
Dependencies are inferred from the claim text.