US3886782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hand riveter
Assignee: VESSEL TOOL CO Ltd
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Filing: 1974-07-08
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Granted: 1975-06-03
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Expires: 1994-07-08
Abstract
Abstract A hand riverter is disclosed having a body with a fixed handle, and a movable handle mounted to lift a jaw case which houses the jaws, a jaw pusher, and a spring. The movable handle is composed of a first movable handle having a rolling member at its one end and a separate second movable handle having a curved cam surface substantially in elastic contact with the rolling member. The first and second movable handles are pivoted individually to constitute a double lever mechanism to assure smooth and reliable riveting operation with a small force. The jaw pusher includes spring rods engaged in the jaws to permit them to move away from and toward each other in elastic contact with the inner peripheral surface of a tapered bored end of the jaw case while maintaining their chucking surfaces in parallel to assure proper chucking action.
Inventors
- 👤 Ukio Miyamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:13
CPC Classifications
B; B21; B21J; B21J15/00; B21J15/38; B21J15/386; B21J15/02; B21J15/04; B21J15/043; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53709; Y10T29/53717; Y10T29/53726; Y10T29/5373; Y10T29/53761
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
202 words
A hand riveter comprising divided jaws, a jaw spring for elastically pressing the jaws, a jaw pusher interposed between the jaws and the jaw spring to deliver the elastic force of the jaw spring to the jaws, a jaw case housing the jaws, the jaw spring and the jaw pusher and having a tapered bore for receiving the jaws in elastic contact wth the inner peripheral surface of the tapered bore, a fixed handle having at its head portion a hollow body acommodating the jaw case therein movably axially thereof, a nosepiece mountable from outside into the hollow body to open the jaws away from each other and movable handle means mounted on the jaw case to lift the jaw case and opposing the fixed handle, the movable handle means being composed of a first movable handle having a rolling member at its one end and a separate second movable handle in the form of a bell crank and formed at its base portion with a cam surface curved progressively gently rearward, the rolling member being substantially in elastic contact with the cam surface, the first and second movable handles being pivoted individually so as to serve as a double lever mechanism.
Claim 2
Dependent Claim
202 words
A hand riveter comprising divided jaws, a jaw spring for elastically pressing the jaws, a jaw pusher interposed between the jaws and the jaw spring to deliver the elastic force of the jaw spring to the jaws, a jaw case housing the jaws, the jaw spring and the jaw pusher and having a tapered bore for receiving the jaws in elastic contact wth the inner peripheral surface of the tapered bore, a fixed handle having at its head portion a hollow body acommodating the jaw case therein movably axially thereof, a nosepiece mountable from outside into the hollow body to open the jaws away from each other and movable handle means mounted on the jaw case to lift the jaw case and opposing the fixed handle, the movable handle means being composed of a first movable handle having a rolling member at its one end and a separate second movable handle in the form of a bell crank and formed at its base portion with a cam surface curved progressively gently rearward, the rolling member being substantially in elastic contact with the cam surface, the first and second movable handles being pivoted individually so as to serve as a double lever mechanism.
Claim 3
Dependent Claim
202 words
A hand riveter comprising divided jaws, a jaw spring for elastically pressing the jaws, a jaw pusher interposed between the jaws and the jaw spring to deliver the elastic force of the jaw spring to the jaws, a jaw case housing the jaws, the jaw spring and the jaw pusher and having a tapered bore for receiving the jaws in elastic contact wth the inner peripheral surface of the tapered bore, a fixed handle having at its head portion a hollow body acommodating the jaw case therein movably axially thereof, a nosepiece mountable from outside into the hollow body to open the jaws away from each other and movable handle means mounted on the jaw case to lift the jaw case and opposing the fixed handle, the movable handle means being composed of a first movable handle having a rolling member at its one end and a separate second movable handle in the form of a bell crank and formed at its base portion with a cam surface curved progressively gently rearward, the rolling member being substantially in elastic contact with the cam surface, the first and second movable handles being pivoted individually so as to serve as a double lever mechanism.
Claim 4
Dependent Claim
202 words
A hand riveter comprising divided jaws, a jaw spring for elastically pressing the jaws, a jaw pusher interposed between the jaws and the jaw spring to deliver the elastic force of the jaw spring to the jaws, a jaw case housing the jaws, the jaw spring and the jaw pusher and having a tapered bore for receiving the jaws in elastic contact wth the inner peripheral surface of the tapered bore, a fixed handle having at its head portion a hollow body acommodating the jaw case therein movably axially thereof, a nosepiece mountable from outside into the hollow body to open the jaws away from each other and movable handle means mounted on the jaw case to lift the jaw case and opposing the fixed handle, the movable handle means being composed of a first movable handle having a rolling member at its one end and a separate second movable handle in the form of a bell crank and formed at its base portion with a cam surface curved progressively gently rearward, the rolling member being substantially in elastic contact with the cam surface, the first and second movable handles being pivoted individually so as to serve as a double lever mechanism.
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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) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |