US3105948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coil form
Assignee: Individual
•
Filing: 1961-11-13
•
Granted: 1963-10-01
•
Expires: 1981-11-13
Abstract
No abstract record available.
Inventors
- 👤 Le Roy F Mcfarlane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:52
CPC Classifications
H; H01; H01F; H01F21/00; H01F21/02; H01F17/00; H01F17/04; H01F17/041; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/947
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A VARIABLE INDUCTOR COMPRISING A HARD DISTORTION RESISTANT TUBULAR COIL FORM, AT LEAST ONE COIL WOUND ON SAID COIL FORM, AT LEAST ONE RESILIENTLY DEFORMABLE RIB SPIRALLY ARRANGED ON AND PROJECTING INWARDLY FROM THE INSIDE SURFACE OF SAID COIL FORM, AND A CORE THREADED INTO SAID COIL FORM, SAID RIB HAVING SUBSTANTIALLY COARSER PITCH THAN THE THREADS OF SAID CORE AND SAID CORE HAVING AN OUTSIDE DIAMETER GREATER THAN THE INSIDE DIAMETER DEFINED BY SAID RIB WHEREBY THE THREADS OF THE CORE CUT ACROSS SAID RIB AND IN SO DOING CAUSE COMPRESSIVE DISPLACEMENT OF THE MATERIAL OF THE RIBS ENGAGED BY THE THREADS OF SAID CORE.
Claim 2
Dependent Claim
106 words
A VARIABLE INDUCTOR COMPRISING A HARD DISTORTION RESISTANT TUBULAR COIL FORM, AT LEAST ONE COIL WOUND ON SAID COIL FORM, AT LEAST ONE RESILIENTLY DEFORMABLE RIB SPIRALLY ARRANGED ON AND PROJECTING INWARDLY FROM THE INSIDE SURFACE OF SAID COIL FORM, AND A CORE THREADED INTO SAID COIL FORM, SAID RIB HAVING SUBSTANTIALLY COARSER PITCH THAN THE THREADS OF SAID CORE AND SAID CORE HAVING AN OUTSIDE DIAMETER GREATER THAN THE INSIDE DIAMETER DEFINED BY SAID RIB WHEREBY THE THREADS OF THE CORE CUT ACROSS SAID RIB AND IN SO DOING CAUSE COMPRESSIVE DISPLACEMENT OF THE MATERIAL OF THE RIBS ENGAGED BY THE THREADS OF SAID CORE.
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) | 1966-09-30 | 1967-04-01 | 1967-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-30 | 1971-04-01 | 1971-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-30 | 1975-04-01 | 1975-10-01 | $7700.00 | Window Closed / Lapsed |