Patent US4977913A successfully refreshed from Google Patents.
US4977913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic umbrella
Assignee: Individual
•
Filing: 1989-04-17
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Granted: 1990-12-18
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Expires: 2009-04-17
Abstract
Abstract An automatic umbrella has a telescopic stick, a frame carrying a canopy and connected to the stick by rings, automatic closing and opening means, a case connected to the lower tube of the stick, and means for twisting the folds of the canopy. Means for twisting the folds may have a thread provided on the middle tube of the stick, and a notch provided on the lower tube of the stick and engaging with the thread.
Inventors
- 👤 Usher Meyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:52
CPC Classifications
A; A45; A45B; A45B25/00; A45B25/14; A45B25/143
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
118 words
An automatic umbrella comprising a telescopic stick comprising an upper tube, at least one middle tube, and a lower tube; at least two rings, one of said rings is fixed to said upper tube, and other of said rings is slidably mounted on said upper tube; a canopy; a frame supporting said canopy and having main ribs pivotably connected to said fixed ring and main stretchers pivotably connected to said sliding ring; means for automatic closing and opening said frame; a case for the closed umbrella provided on said lower tube; and means for twisting the folds of the canopy which appear during closing the frame by spirally moving said middle and lower tubes relative to one another.
Claim 2
Dependent Claim
118 words
An automatic umbrella comprising a telescopic stick comprising an upper tube, at least one middle tube, and a lower tube; at least two rings, one of said rings is fixed to said upper tube, and other of said rings is slidably mounted on said upper tube; a canopy; a frame supporting said canopy and having main ribs pivotably connected to said fixed ring and main stretchers pivotably connected to said sliding ring; means for automatic closing and opening said frame; a case for the closed umbrella provided on said lower tube; and means for twisting the folds of the canopy which appear during closing the frame by spirally moving said middle and lower tubes relative to one another.
Claim 3
Dependent Claim
36 words
An automatic umbrella as defined in claim 1, wherein said means for twisting said folds comprises a thread provided on said middle tube, and a notch provided on said lower tube and engaging with said thread.
Claim 4
Dependent Claim
58 words
An automatic umbrella as defined in claim 1, wherein said means for automatic closing and opening said frame comprises an auxiliary ring fixed to said middle tube, pillars pivotably connected to said fixed ring, stretchers pivotably connected to said main stretchers, levers pivotably connected to said auxiliary ring, said pillars and stretchers are pivotably connected with said levers.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-12-17 | 1994-06-18 | 1994-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-17 | 1998-06-18 | 1998-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-17 | 2002-06-18 | 2002-12-18 | $7700.00 | Window Closed / Lapsed |