Patent US3305810A successfully refreshed from Google Patents.
US3305810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solenoid construction
Assignee: Individual
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Filing: 1964-11-24
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Granted: 1967-02-21
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Expires: 1984-11-24
Abstract
No abstract record available.
Inventors
- 👤 James E Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:47
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/20; H01F7/202
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
IN A SOLENOID CONSTRUCTION, A COIL; SAID COIL INCLUDING TWO INTERLEAVED SPACED SPIRALS OF GENERALLY FLAT CONDUCTING MATERIAL WITH THE PLANES OF THE FLAT MATERIAL OF SAID SPIRALS EXTENDING GENERALLY PARALLEL; INSULATING MATERIAL BETWEEN A FIRST SERIES OF ALTERNATE SPACINGS BETWEEN ADJACENT CONVOLUTIONS OF SAID SPIRALS; SPACER MEANS BETWEEN A SECOND SERIES OF ALTERNATE SPACINGS BETWEEN ADJACENT CONVOLUTIONS OF SAID SPIRALS; THE LAST MENTIONED CONVOLUTIONS SPACED BY SPACER MEANS COMPRISING THE TURNS OF SAID COIL; SAID SPACER MEANS EXTENDING GENERALLY RADIALLY OF SAID COIL AND DEFINING WITH EACH OF SAID TURNS A RADIAL FLUID FLOW PASSAGE EXTENDING RADIALLY OF THE COIL, SAID SPACER MEANS COMPRISING A SERIES OF RADIALLY EXTENDING METALLIC BARS CONTACTING SAID ADJACENT CONVOLUTIONS WHICH DEFINE A TURN OF SAID COIL.
Claim 2
Dependent Claim
123 words
IN A SOLENOID CONSTRUCTION, A COIL; SAID COIL INCLUDING TWO INTERLEAVED SPACED SPIRALS OF GENERALLY FLAT CONDUCTING MATERIAL WITH THE PLANES OF THE FLAT MATERIAL OF SAID SPIRALS EXTENDING GENERALLY PARALLEL; INSULATING MATERIAL BETWEEN A FIRST SERIES OF ALTERNATE SPACINGS BETWEEN ADJACENT CONVOLUTIONS OF SAID SPIRALS; SPACER MEANS BETWEEN A SECOND SERIES OF ALTERNATE SPACINGS BETWEEN ADJACENT CONVOLUTIONS OF SAID SPIRALS; THE LAST MENTIONED CONVOLUTIONS SPACED BY SPACER MEANS COMPRISING THE TURNS OF SAID COIL; SAID SPACER MEANS EXTENDING GENERALLY RADIALLY OF SAID COIL AND DEFINING WITH EACH OF SAID TURNS A RADIAL FLUID FLOW PASSAGE EXTENDING RADIALLY OF THE COIL, SAID SPACER MEANS COMPRISING A SERIES OF RADIALLY EXTENDING METALLIC BARS CONTACTING SAID ADJACENT CONVOLUTIONS WHICH DEFINE A TURN OF SAID COIL.
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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |