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US 2003/0178159 A1Published application
Automatically resettable guide system for an overhead door
OwnerKenneth Davidinventor
Life of this patent
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Abstract
The present invention is a device which is designed to allow a door to give way when impacted by an outside force such as a forklift, reducing damage. The present invention requires less force to be activated, which allows its use on wider doors than were previously possible. The present invention is also able to reset itself, depending upon how much distance was traveled during the impact. The present invention requires less maintenance than other devices currently in use.
Claims18
A guide system which may be adapted to an existing door comprising:
- a fixed housing,
- a moveable housing,
- means to keep said fixed and said moveable housings closed,
- at least one pin,
- at least one shaft,
- means to retain said shaft,
- means for automatically resetting said guide system;
- and
- means for manually resetting said guide system.
6 more elements
A door system comprising:
- a guide system, and
- tracks for said guide system.
Dependencies are inferred from the claim text.