Pneumatic door opener
OwnerAnthony G. Aquilinainventor
Life of this patent
Estimating the term…
Abstract
A door operator system includes a rodless fluid cylinder that has a cylinder body and a rodless piston adapted for reciprocation in the cylinder body. A carriage which is adapted for reciprocation externally along the length of the cylinder body is secured to the piston. An arm member connects the cylinder carriage to an associated sliding door. A control circuit is provided for controlling the operation of the fluid cylinder and hence the position of the associated sliding door.
Claims21
A sliding door operator system comprising:
- a rodless fluid cylinder comprising a cylinder body, a rodless piston adapted for reciprocation in said cylinder body, and a carriage adapted for reciprocation externally along the length of said cylinder body, said carriage being secured to said piston;
- a link means for connecting said cylinder carriage to an associated sliding door;
- a control means for controlling the operation of said fluid cylinder, and hence the position of the associated sliding door, wherein said control means comprises:
- a source of pressurized fluid,
- a directional valve communicating with said fluid cylinder for directing a pressurized fluid from said source of pressurized fluid to a respective end of said fluid cylinder,
- an exhaust line communicating with said fluid cylinder for venting an exhaust fluid from said fluid cylinder, and
- a back pressure relief valve in fluid communication with said exhaust line for regulating a flow of said exhaust fluid through said exhaust line.
An air powered sliding door operator system comprising:
- a door which is mounted for sliding movement between a first position in which it closes a building opening and a second position spaced away from the opening;
- a rodless air cylinder comprising a cylinder body, a rodless piston adapted for reciprocation in said cylinder body, and a carriage adapted for reciprocation externally along the length of said cylinder body, said carriage being secured to said piston;
- shock absorbing connecting means for connecting said cylinder carriage to said sliding door wherein said shock absorbing connecting means comprises:
- a pair of telescoping tubular sections, a first of said sections being pivotally secured to said fluid cylinder carriage by a first bracket and a second of said sections being pivotally secured to said sliding door by a second bracket,
- an adjustment means for selectively adjusting an overall length of said pair of telescoping tubular sections, and,
- a fastener means for securing said pair of telescoping tubular sections to each other, at a selected overall length;
- and,
- valve means for selectively feeding pressurized air to said air cylinder to drive said rodless piston and hence said carriage thereby moving said door between said first and second positions thereof.
A fluid powered operator system for an articulated overhead sliding door that is movable in guideways which extend upwardly alongside an opening for the door and then rearwardly, comprising:
- a fluid cylinder comprising an elongated cylinder body, a rodless piston adapted for longitudinal reciprocation in said cylinder body, and a carriage adapted for reciprocation externally along the length of said cylinder body, said carriage being secured to said piston;
- an arm member which connects said cylinder carriage to the door wherein said arm member comprises:
- two telescoping portions,
- a resilient means for resiliently biasing said two telescoping portions in relation to each other, and,
- an adjustment means for selectively adjusting an overall length of said two telescoping portions;
- a source of pressurized fluid for activating a movement of said rodless piston in said fluid cylinder;
- and,
- first valve means interposed between said source of pressurized fluid and said fluid cylinder for selectively feeding pressurized fluid to said fluid cylinder to reciprocate said rodless piston therein.
Dependencies are inferred from the claim text.