US4146868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resistance unit structure
Assignee: Mosebach Manufacturing Co
•
Filing: 1978-02-28
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Granted: 1979-03-27
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Expires: 1998-02-28
Abstract
Abstract The unit comprises a fan-folded ribbon of resistance material supported by parallel insulating members at the ends of the loops. Each length or fold is formed with a transverse reverse bend or offset dividing the fold into major and minor lengths, which are not coplanar.
Inventors
- 👤 Victor V. Kirilloff
- 👤 William A. Benson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:40
CPC Classifications
H; H01; H01C; H01C3/00; H01C3/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
83 words
A resistance unit adapted to withstand high temperatures and mechanical vibration comprising parallel supporting means opposite from each other, supporting between them a fan-folded ribbon of resistance material at the loop ends thereof, at least some of the folds having at least one reverse bend each transversely thereof intermediate the supporting means so as to offset from each other in different planes, the portions of the fold on each side of the bend, said bend dividing the fold into major and minor lengths.
Claim 2
Dependent Claim
83 words
A resistance unit adapted to withstand high temperatures and mechanical vibration comprising parallel supporting means opposite from each other, supporting between them a fan-folded ribbon of resistance material at the loop ends thereof, at least some of the folds having at least one reverse bend each transversely thereof intermediate the supporting means so as to offset from each other in different planes, the portions of the fold on each side of the bend, said bend dividing the fold into major and minor lengths.
Claim 3
Dependent Claim
30 words
The resistance unit of claim 1 in which adjoining folds each have a transverse reverse bend symmetrically located with respect to the longitudinal center line between the parallel supporting means.
Claim 4
Dependent Claim
17 words
The resistance unit of claim 2 in which the major lengths of the adjoining folds are parallel.
Claim 5
Dependent Claim
24 words
The resistance unit of claim 2 in which the transverse bends in adjoining folds face in the same direction along the longitudinal center line.
Claim 6
Dependent Claim
51 words
In combination, two resistance units of claim 1, together with means for supporting the units horizontally one above the other, the units being offset along a longitudinal center line between the parallel supporting means so that the folds of the upper unit overlay spaces between the folds of the lower unit.
References Cited (Backward Citations)
US1472138A
Cited
GB252496A
Cited
US2662958A
Cited
US3214572A
Cited
US3212045A
Cited
US4051452A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-03-26 | 1982-09-25 | 1983-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-26 | 1986-09-25 | 1987-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-26 | 1990-09-25 | 1991-03-27 | $7700.00 | Window Closed / Lapsed |