Patent US3906970A successfully refreshed from Google Patents.
US3906970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-opening umbrella
Assignee: KNIRPS INTERNATIONAL A GERMAN CORP GmbH
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Filing: 1973-06-04
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Granted: 1975-09-23
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Expires: 1993-06-04
Abstract
Abstract An automatic umbrella which includes a releasable self-opening means, such as a compression spring provided between a pair of runners sliding on the stick, wherein the spring is compressed when the runners are in a closed position and locked by a resiliently-pivoted locking pawl inside the stick protruding radially outwardly of the stick to engage a runner and a pushbutton having an enlarged head for releasing the locking pawl from the runner to allow the umbrella to open. A sliding ring is provided which includes a safety lock for the push-button with the large head whereby when the ring is in a predetermined position, the head cannot be depressed to release the runners. The ring can be moved axially to disengage the safety lock from the pushbutton head.
Inventors
- 👤 Kazo Saito
- 👤 Nobutoshi Kida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:46
CPC Classifications
A; A45; A45B; A45B25/00; A45B25/16
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
230 words
A self-opening umbrella comprising a stick, a handle at one end of the stick, a crown at the other end of the stick, at least one runner slidable on the stick, dome ribs hinged to the crown, and stretcher members hinged to the runner and to the dome ribs respectively for supporting the dome ribs when the umbrella is in an open position; energy-storing means for loading the components of the umbrella to force the unbrella components to move to an umbrella open position when the umbrella is closed and the runner is adjacent the handle; a locking pawl pivotally mounted in the hollow stick with a locking head protruding radially from the stick and adapted to engage a seat provided in the runner; releasable push-button means associated with the locking pawl, whereby when the push-button means is depressed laterally, it will force the locking pawl to pivot inwardly of the stick and disengage the runner, a sliding member adapted for limited axial movement whereby in one position, it engages and locks the pushbutton means and in a second position, it is disengaged from the push-button means allowing the push-button means to be depressed, the sliding member comprising an annular element having a builtup portion adapted to engage an enlarged head of the push-button when the ring is in a push-button locking position and preventing the push-button from being depressed.
Claim 2
Dependent Claim
230 words
A self-opening umbrella comprising a stick, a handle at one end of the stick, a crown at the other end of the stick, at least one runner slidable on the stick, dome ribs hinged to the crown, and stretcher members hinged to the runner and to the dome ribs respectively for supporting the dome ribs when the umbrella is in an open position; energy-storing means for loading the components of the umbrella to force the unbrella components to move to an umbrella open position when the umbrella is closed and the runner is adjacent the handle; a locking pawl pivotally mounted in the hollow stick with a locking head protruding radially from the stick and adapted to engage a seat provided in the runner; releasable push-button means associated with the locking pawl, whereby when the push-button means is depressed laterally, it will force the locking pawl to pivot inwardly of the stick and disengage the runner, a sliding member adapted for limited axial movement whereby in one position, it engages and locks the pushbutton means and in a second position, it is disengaged from the push-button means allowing the push-button means to be depressed, the sliding member comprising an annular element having a builtup portion adapted to engage an enlarged head of the push-button when the ring is in a push-button locking position and preventing the push-button from being depressed.
Claim 3
Dependent Claim
50 words
A self-opening umbrella as defined in claim 1 wherein there are two runners provided on the umbrella stick and strut means interconnects the additional runner to the stretcher means and a compression spring is provided between the runners normally urging the runners apart, the compression spring being the energy-storing means.
Claim 4
Dependent Claim
74 words
A self-opening umbrella as defined in claim 1 wherein the sliding member includes an annular portion having a central opening conforming to the outer area of the stick and a peripheral downwardly-depending skirt, an axially-extending slot in the skirt through which the push-button shank extends and a built-up portion below the slot on the skirt adapted to engage under the shoulder of the enlarged head of the push-button when the push-button is extended laterally.
Claim 5
Dependent Claim
79 words
A self-opening umbrella as defined in claim 3 wherein an annular member is provided on the stick immediately adjacent the handle and includes a radial Bore through which the push-button slides and is supported, and compression spring means are provided between the annular member and the annular portion of the sliding member to urge the sliding member in a position where the built-up portion on the skirt normally engages below the shoulder of the enlarged head of the push-button.
Claim 6
Dependent Claim
31 words
The self-opening umbrella as claimed in claim 1 in which said annular element includes an upwardly-opening recess portion for removably receiving tips of the dome ribs when the umbrella is collapsed.
Claim 7
Dependent Claim
34 words
The self-opening umbrella as claimed in claim 5 including compression spring means between the annular element and sliding member to normally urge the sliding member toward a position to engage the dome rib tips.
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) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |