US4543502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic ring for free piston rectilinear generators
Assignee: Individual
•
Filing: 1984-04-19
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Granted: 1985-09-24
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Expires: 2004-04-19
Abstract
Abstract The generator comprises at least one coil surrounded by a magnetic circuit of an inductor for taking-off electrical power. The magnetic circuit forms a variable gap with a reciprocating mobile part moving between two positions. The mobile reciprocating part is made in the form of a magnetic ring made by sheets of ferro-magnetic material having a uniform thickness and width and being radially positioned. The distance between the sheets at the proximity of a residual gap is such that ferro-magnetic material in area of the residual gap represents from 50 to 80% of the sheets in the magnetic circuit of the inductor.
Inventors
- 👤 Jacques H. Jarret
- 👤 Jean-Marie B. Jarret
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:04
CPC Classifications
H; H02; H02K; H02K35/00; H02K1/00; H02K1/06; H02K1/34; H02K15/00; H02K15/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
138 words
A generator comprising at least one coil surrounded by a magnetic circuit of an inductor for taking-off electrical power, said magnetic circuit forming a gap with a reciprocating mobile part moving between two positions, said gap having a length which varies with displacement of the mobile part, the mobile reciprocating part being made in the form of a magnetic ring with sheets of ferro-magnetic material having a uniform thickness and width and being radially and regularly positioned, the distance between the sheets in the proximity of a residual gap between the magnetic ring and the opposite wall of the magnetic circuit of the inductor being such that the proportion of ferro-magnetic of the magnetic ring in area of said residual gap represents from 50 to 80% of the proportion of sheets in the magnetic circuit of the inductor.
Claim 2
Dependent Claim
138 words
A generator comprising at least one coil surrounded by a magnetic circuit of an inductor for taking-off electrical power, said magnetic circuit forming a gap with a reciprocating mobile part moving between two positions, said gap having a length which varies with displacement of the mobile part, the mobile reciprocating part being made in the form of a magnetic ring with sheets of ferro-magnetic material having a uniform thickness and width and being radially and regularly positioned, the distance between the sheets in the proximity of a residual gap between the magnetic ring and the opposite wall of the magnetic circuit of the inductor being such that the proportion of ferro-magnetic of the magnetic ring in area of said residual gap represents from 50 to 80% of the proportion of sheets in the magnetic circuit of the inductor.
Claim 3
Dependent Claim
51 words
The generator as set forth in claim 1 comprising two coils placed in parallel into notches of the magnetic circuit of the inductor so as to take-off power from the mobile part in two directions of movement of said mobile part, whereby obtaining a better continuity of the current so produced.
Claim 4
Dependent Claim
24 words
The generator as set forth in claim 1, wherein the mobile part corresponds to a magnetic mobile part of a free piston heat engine.
Claim 5
Dependent Claim
37 words
The generator according to claim 1, wherein the sheets of the magnetic ring have a width substantially equal to width of the sheets of the magnetic circuit of the inductor in the proximity of said residual gap.
References Cited (Backward Citations)
US3591819A
Cited
US3814963A
Cited
US3955272A
Cited
FR2314614A1
Cited
US4227142A
Cited
US4249099A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-09-23 | 1989-03-25 | 1989-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-23 | 1993-03-25 | 1993-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-23 | 1997-03-25 | 1997-09-24 | $7700.00 | Window Closed / Lapsed |