US4825888A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manual/automatic dual-purpose umbrella structure
Assignee: TUNG HO IND CO Ltd
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Filing: 1988-01-11
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Granted: 1989-05-02
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Expires: 2008-01-11
Abstract
Abstract A manual/automatic dual-purposed umbrella structure comprising a handle, a stationary tube, an inner tube, an outer tube and a top tube. The handle has two buttons which respectively control a pushing rod and a hook portion to fix or loosen the outer tube. The inner tube and the top tube are separately passed into the outer tube from the top and the bottom thereof. The top tube and the stationary tube each respectively comprises a hook hole used for hooking a hook rod installed on the outer tube. Two springs are respectively set on the inner tube and the top tube, the elastic forces thereof forcing the umbrella frame to be opened or closed.
Inventors
- 👤 Tseng Su
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:30
CPC Classifications
A; A45; A45B; A45B25/00; A45B25/14; A45B25/143
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
321 words
A manual/automatic dual-purpose umbrella structure comprising: a handle (l) having two buttons (11, 12) protruding therefrom and respectively connected with a hook rod (25) and a pushing rod (24); a stationary tube (2) fixed on a seat of said handle (1); a hook portion (251) of said hook rod (25) and an upper portion of said pushing rod (24) being situated in said stationary tube (2); a pushing block (221) of a leaf spring (22) being supported by said upper portion of said pushing rod (24); a lower hook hole (23) being set on said stationary tube (2) at a corresponding position of said pushing block (221); another leaf spring (21) being set in an upper portion of said stationary tube (2), said leaf spring (21) having a protuberance (211) thereon; an outer tube (4) having a long recess (42) on one side thereof; a top tube (5) and an inner tube (3) being encompassed by said outer tube (4); a top end of said outer tube (4) having a flange (41) thereon; upper slidable blocks (72), lower slidable blocks (73) and lower fixed blocks (74) being installed on an upper outer portion of said outer tube (4), respectively in order from an uppermost position to a lowermost position; a lower portion of said lower fixed blocks (74) further supporting a hook rod (6); said inner tube (3) being installed between said top tube (5) and said stationary tube (2) whereon a spring (32) and a pin (31) are provided; said top tube (5) partially extending from said outer tube (4) and having a long recess (53) and an upper hook hole (51); upper fixed blocks (71) being installed on said top tube (5); and a second spring (52) being set between said upper and lower slidable blocks (72, 73); a passing pin (54) passing through said top tube (5) and being supported by a top of said inner tube (3).
Claim 2
Dependent Claim
321 words
A manual/automatic dual-purpose umbrella structure comprising: a handle (l) having two buttons (11, 12) protruding therefrom and respectively connected with a hook rod (25) and a pushing rod (24); a stationary tube (2) fixed on a seat of said handle (1); a hook portion (251) of said hook rod (25) and an upper portion of said pushing rod (24) being situated in said stationary tube (2); a pushing block (221) of a leaf spring (22) being supported by said upper portion of said pushing rod (24); a lower hook hole (23) being set on said stationary tube (2) at a corresponding position of said pushing block (221); another leaf spring (21) being set in an upper portion of said stationary tube (2), said leaf spring (21) having a protuberance (211) thereon; an outer tube (4) having a long recess (42) on one side thereof; a top tube (5) and an inner tube (3) being encompassed by said outer tube (4); a top end of said outer tube (4) having a flange (41) thereon; upper slidable blocks (72), lower slidable blocks (73) and lower fixed blocks (74) being installed on an upper outer portion of said outer tube (4), respectively in order from an uppermost position to a lowermost position; a lower portion of said lower fixed blocks (74) further supporting a hook rod (6); said inner tube (3) being installed between said top tube (5) and said stationary tube (2) whereon a spring (32) and a pin (31) are provided; said top tube (5) partially extending from said outer tube (4) and having a long recess (53) and an upper hook hole (51); upper fixed blocks (71) being installed on said top tube (5); and a second spring (52) being set between said upper and lower slidable blocks (72, 73); a passing pin (54) passing through said top tube (5) and being supported by a top of said inner tube (3).
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) | 1992-05-01 | 1992-10-31 | 1993-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-01 | 1996-10-31 | 1997-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-01 | 2000-10-31 | 2001-05-02 | $7700.00 | Window Closed / Lapsed |