Pneumatically actuated chute door and system employing the same
AssigneeNycor Products and Services, Inc.
InventorLawrence M. Nyquist
Life of this patent
Estimating the term…
Abstract
A chute system having a pneumatically actuated access door where the door is journally mounted to an access port in the wall and communicates with the chute to direct objects inserted into the access port to the chute. When an operator actuates a switch, the door may be opened by a pneumatic forcer connected between the access port frame and the door so as to form a lever arm about the door journal. The pneumatic forcer is mounted to the door with a slidable journal such that the door may be opened manually. The duration of the open state of the door is determined by a timing mechanism which removes the pneumatic pressure after a time has elapsed, enabling a spring to urge the door into the closed position.
Claims39
A chute system comprising:
- a chute extending vertically;
- an access port being formed in the chute;
- a door fitted to the access port so as to close the access port when the door is in a closed position, the door being journalled such that it opens rotatably to permit access to an interior of the chute;
- and
- wherein the door is urged open by a pneumatic forcer adapted to communicate with a source of pneumatic pressure.
A chute system comprising:
- a chute extending vertically;
- an access door assembly having a surrounding frame capable of being fitted into an opening in a wall;
- a door being journally mounted to the frame such that it can swing away from the wall;
- a pneumatic forcer operably connected to the frame and the door to rotatably move the door from a closed position to an open position;
- and
- a pneumatic control assembly having,
- means for actuating the door opening operation;
- means for supplying pneumatic pressure to the pneumatic forcer;
- and
- means for regulating the duration of the supply of pneumatic pressure.
Dependencies are inferred from the claim text.