Patent US2255557A successfully refreshed from Google Patents.
US4178978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manual operator for coiling door
Assignee: Wayne Dalton Corp
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Filing: 1978-06-26
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Granted: 1979-12-18
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Expires: 1998-06-26
Abstract
Abstract A manual operator for a coiling door has a reel mounted for free rotation on a shaft supporting drums to which the coiling door is secured. An endless flexible non-extensible element is mounted on the reel with a sufficient number of turns thereon for complete opening or closing of the door and the reel is secured to the adjacent one of the door supporting drums. The resilient non-extensible element is manually drawn to open or close the door and may be provided with hand holds to facilitate grasping thereof. A guide for the flexible non-extensible element may be secured adjacent the reel to guide the flexible non-extensible element onto and off of the reel.
Inventors
- 👤 Peter B. Burnham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:15
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/56; E06B9/78
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
A manual operator for a coiling door including spaced brackets secured adjacent the top of the door opening, a shaft fixed to said brackets; drums rotatably mounted on said shaft and a coiling door having an edge secured to said drums comprising a reel rotatably mounted on said shaft adjacent one of said brackets; means for securing said reel to the adjacent one of said drums; an endless flexible non-extensible element, opposite ends for said element secured to said reel, a plurality of turns of said element on said reel, guide means directly secured to said bracket adjacent said reel and underlying said reel for guiding said element onto and off of said reel and a plurality of spaced stops on said element and a plurality of manually grasped grips slidably mounted on said element for engagement with said stops whereby when said element is manually pulled in one direction rotation of said reel opens said door and when said element is manually pulled in the other direction opposite rotation of said reel will close said door.
Claim 2
Dependent Claim
177 words
A manual operator for a coiling door including spaced brackets secured adjacent the top of the door opening, a shaft fixed to said brackets; drums rotatably mounted on said shaft and a coiling door having an edge secured to said drums comprising a reel rotatably mounted on said shaft adjacent one of said brackets; means for securing said reel to the adjacent one of said drums; an endless flexible non-extensible element, opposite ends for said element secured to said reel, a plurality of turns of said element on said reel, guide means directly secured to said bracket adjacent said reel and underlying said reel for guiding said element onto and off of said reel and a plurality of spaced stops on said element and a plurality of manually grasped grips slidably mounted on said element for engagement with said stops whereby when said element is manually pulled in one direction rotation of said reel opens said door and when said element is manually pulled in the other direction opposite rotation of said reel will close said door.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-17 | 1983-06-18 | 1983-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-17 | 1987-06-18 | 1987-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-17 | 1991-06-18 | 1991-12-18 | $7700.00 | Window Closed / Lapsed |