Patent US2880410A successfully refreshed from Google Patents.
US3842295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single stroke tool and means for storing energy therein
Assignee: Individual
•
Filing: 1972-08-10
•
Granted: 1974-10-15
•
Expires: 1992-08-10
Abstract
Abstract Electrically operated means are disclosed for energizing a single stroke tool. A housing including an electrically energizable, annular coil is provided, into which a magnetizable core member is inserted. When current is applied, a magnetic field is induced that will axially displace the magnetizable core member which is suitably attached to a tool. Axial movement of the core member, in combination with a latchable trigger assembly, compresses spring means in the tool, which thereby stores mechanical energy. The mechanical energy may be released by depressing the trigger and thereby provide a single burst of energy for actuating the tool.
Inventors
- 👤 N Doherty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:23
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/16; H01F7/1607; H02; H02K; H02K33/00; H02K33/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
62 words
The combination of a single stroke tool having an axially displaceable magnetizable core, a housing having a bore therein, a coil-like member positioned within said housing concentrically with said bore and arranged to removably receive said magnetizable core, said coil-like member being adapted to be connected to a source of electrical energy and switch means connected in series with said coil-like member.
Claim 2
Dependent Claim
62 words
The combination of a single stroke tool having an axially displaceable magnetizable core, a housing having a bore therein, a coil-like member positioned within said housing concentrically with said bore and arranged to removably receive said magnetizable core, said coil-like member being adapted to be connected to a source of electrical energy and switch means connected in series with said coil-like member.
Claim 3
Dependent Claim
39 words
The combination in accordance with claim 1 wherein said tool further comprises means for biasing said core when said coil-like member is electrically energized and latch means for releasably retaining said core when said coil-like member is electrically energized.
Claim 4
Dependent Claim
33 words
The combination in accordance with claim 2 wherein said biasing means is a compression spring and wherein there is further included means for compressing said spring when said coil-like member is electrically energized.
Claim 5
Dependent Claim
14 words
The combination in accordance with claim 1 wherein said tool is a needleless injector.
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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |