Door closer hold-open apparatus
OwnerTom W. Duffyinventor
Life of this patent
Estimating the term…
Abstract
The present invention relates to a hold-open apparatus for controlling the position of a door, preferably a screen door or storm door. The apparatus is used in conjunction with a piston assembly and can maintain a door in a predetermined open position, such as about 45° to about 100° in relation to a closed position. In a preferred embodiment, the apparatus can automatically lock and/or unlock when the door reaches predetermined positions. The apparatus advantageously can be retrofitted to existing door assemblies.
Claims20
A device for controlling the position of a door relative to a door frame, wherein the door has one end of a cylinder closing mechanism operatively attached thereto and where another end of the cylinder closing mechanism is attached to a door frame through a bracket, said device comprising:
- a hold-open apparatus having a first end, a second end and an interconnecting central portion, said apparatus operatively connected at the first end to the bracket in an aperture separate from an aperture which secures the cylinder closing mechanism to the bracket, wherein said apparatus second end is adapted to engage an end of a cylinder of the cylinder closing mechanism when the door has been opened to at least a predetermined degree to maintain the door in an open position.
A device for controlling the position of a door relative to a door frame, wherein the door has one end of a cylinder closing mechanism operatively attached thereto and where another end of the cylinder closing mechanism is attached to a door frame through a bracket, said device comprising:
- (a) a hold-open apparatus having a first end, a second end, and an interconnecting central portion, wherein said apparatus second end is adapted to engage an end of a cylinder of the cylinder closing mechanism when the door has been opened to at least a predetermined degree to maintain the door in an open position;
- and
- (b) an adapter having a male portion which operatively connects said cylinder closing mechanism end to the door frame, and a female portion, wherein said apparatus first end is operatively connected to said adapter female portion;
- or
- (c) a spring is connected to said apparatus first end which biases the apparatus towards the cylinder closing mechanism, wherein the spring will cause the apparatus second end to automatically engage said cylinder end when the predetermined angle has been reached.
Dependencies are inferred from the claim text.