Patent US4863143A successfully refreshed from Google Patents.
US4863143A
Expired / Lapsed
US
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Solenoid actuator
Assignee: PED Ltd
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Filing: 1987-04-14
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Granted: 1989-09-05
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Expires: 2007-04-14
Abstract
Abstract A solenoid actuator has an external casing comprising a part 16 mechanically drawn from a mild steel work piece and a second part in the form of a machined, screw threaded bush 20 welded to the drawn part 16. The part 16 is mechanically drawn to incorporate means such as a nut 18 by which the actuator can be threaded in to engagement with a complementary structure. In the case of a diesel engine, for example, the actuator may form a fuel cut off valve when mounted to the diesel engine valve casting.
Inventors
- 👤 Barry S. Cowley
- 👤 George V. Calvert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:01
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/16; H01F7/1607; F; F02; F02B; F02B3/00; F02B3/06; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/6154; Y10T137/6157; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
83 words
A solenoid actuator including an external casing formed in at least two parts and comprising: a first part constituted by a metal compartment drawn from a work piece and having an integrally formed means for engagement by a tool; and a second machined part fixed to said metal compartment and adapted for mounting to a separate structure to enable attachment and detachment of the actuator from said separate structure by application of the tool to said integrally formed means on the first part.
Claim 2
Dependent Claim
83 words
A solenoid actuator including an external casing formed in at least two parts and comprising: a first part constituted by a metal compartment drawn from a work piece and having an integrally formed means for engagement by a tool; and a second machined part fixed to said metal compartment and adapted for mounting to a separate structure to enable attachment and detachment of the actuator from said separate structure by application of the tool to said integrally formed means on the first part.
Claim 3
Dependent Claim
15 words
An actuator according to claim 1, wherein said second part is a screw threaded bush.
Claim 4
Dependent Claim
18 words
A actuator according to any claim 1 wherein said work piece is a mild steel disc or ring.
Claim 5
Dependent Claim
21 words
An actuator according to claim 3 wherein said second part is of mild steel and is welded to said drawn part.
Claim 6
Dependent Claim
46 words
An actuator according to of claim 4, wherein said tool engagement means integral with said drawn part is a shaped head or nut for engagement by a spanner or like tool, the casing being adapted for screw threaded attachment to and detachment from a separate structure.
Claim 7
Dependent Claim
28 words
The actuator according to claim 1 wherein said metal compartment of said casing is lined with a metal sleeve receiving the solenoid armature as a sliding fit therein.
Claim 8
Independent Claim
63 words
A method of producing an external casing for a solenoid actuator of the kind described, according to which a first casing part incorporating the tool engagement means is produced by a mechanical drawing operation, a second part of the casing incorportating means for mounting to the separate structure is produced by machining, and the two casing parts are fixedly attached to one another.
Claim 9
Independent Claim
63 words
A method of producing an external casing for a solenoid actuator of the kind described, according to which a first casing part incorporating the tool engagement means is produced by a mechanical drawing operation, a second part of the casing incorportating means for mounting to the separate structure is produced by machining, and the two casing parts are fixedly attached to one another.
Claim 10
Dependent Claim
42 words
A method according to claim 7, wherein the first part is mechanically drawn from a mild steel work piece, the second part is machined from the mild steel work piece and the two parts are fixedly attached to one another by welding.
Claim 11
Dependent Claim
48 words
A method according to claim 8, wherein the mechanical drawing operation includes the step or forming the tool engagement means as a head or nut for engagement by a spanner or like tool and the machining operation includes the step of forming screw thread on the second part.
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) | 1992-09-04 | 1993-03-06 | 1993-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-04 | 1997-03-06 | 1997-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-04 | 2001-03-06 | 2001-09-05 | $7700.00 | Window Closed / Lapsed |