Patent US3795381A successfully refreshed from Google Patents.
Patent US3105289A successfully refreshed from Google Patents.
US3105289A
Expired / Lapsed
US
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Coiled filters
Assignee: Compagnie Electro Mecanique SA
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Filing: 1960-03-25
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Granted: 1963-10-01
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Expires: 1980-03-25
Abstract
No abstract record available.
Inventors
- 👤 Jardin Jacques Alphonse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:41
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/111; B01D29/13; B01D29/15; B01D29/44; B01D29/48; Y; Y10; Y10S; Y10S29/00; Y10S29/042; Y10T; Y10T29/00; Y10T29/49; Y10T29/496; Y10T29/49602
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
196 words
A METHOD OF MANUFACTURING A COILED FILTER COMPRISING MAKING, IN THE EXTERIOR OF A GENERALLY CYLINDRICAL FRAME, A HELICAL WIRE-HOLDING CUT OF A PITCH ONLY SLIGHTLY GREATER THAN THE THICKNESS OF WIRE TO BE WOUND ON SAID FRAME AND HAVING A SINGLE FORWARD HELICAL CONVOLUTION SUBSTANTIALLY WIDER THAN SAID PITCH AND SUCCEEDING HELICAL CONVOLUTIONS OF THE SAME WIDTH AS SAID PITCH, AND GUIDING RELATIVELY FINE WIRE INTO SAID FORWARD CONVOLUTION; ALL SAID CONVOLUTIONS HAVING REAR SURFACES OF SUCH STEEP INCLINATION THAT PROJECTIOINS OF SAID SURFACES ARE CLEAR OF WIRE IN A NEXT SUCCEEDING CONVOLUTION, SAID SINGLE FORWARD CONVOLUTION BEING CUT TO PROVIDE IT WITH A LESS STEELPY INCLINED FORWARD SURFACES CONSTITUTING A RELATIVELY WIDE RAMP FOR RECEIVING THE WIRE BEING GUIDED INTO SAID FORWARD CONVOLUTION AND FOR CARRYING SAID WIRE INTO ENGAGEMENT WITH THE REAR SURFACE OF SAID FORWARD CONVOLUTION, THE CUTTING OF SAID FORWARD CONVOLUTION OVERLAPPING AND CUTTING AWAY A HELICALLY TERMINAL PART OF THE WIDTH OF THE RAMP AS SAID FORWARD CONVOLUTION PROGRESSIVELY BECOMES ONE OF SAID SUCCEEDING CONVOLUTIONS AND SAID CUTTING AWAY BEING OF SUCH EXTEND AS TO FORM THE SUCCEEDING CONVOLUTION OF THE SAME WIDTH AS THE PITCH OF THE HELICAL CUT.
Claim 2
Independent Claim
196 words
A METHOD OF MANUFACTURING A COILED FILTER COMPRISING MAKING, IN THE EXTERIOR OF A GENERALLY CYLINDRICAL FRAME, A HELICAL WIRE-HOLDING CUT OF A PITCH ONLY SLIGHTLY GREATER THAN THE THICKNESS OF WIRE TO BE WOUND ON SAID FRAME AND HAVING A SINGLE FORWARD HELICAL CONVOLUTION SUBSTANTIALLY WIDER THAN SAID PITCH AND SUCCEEDING HELICAL CONVOLUTIONS OF THE SAME WIDTH AS SAID PITCH, AND GUIDING RELATIVELY FINE WIRE INTO SAID FORWARD CONVOLUTION; ALL SAID CONVOLUTIONS HAVING REAR SURFACES OF SUCH STEEP INCLINATION THAT PROJECTIOINS OF SAID SURFACES ARE CLEAR OF WIRE IN A NEXT SUCCEEDING CONVOLUTION, SAID SINGLE FORWARD CONVOLUTION BEING CUT TO PROVIDE IT WITH A LESS STEELPY INCLINED FORWARD SURFACES CONSTITUTING A RELATIVELY WIDE RAMP FOR RECEIVING THE WIRE BEING GUIDED INTO SAID FORWARD CONVOLUTION AND FOR CARRYING SAID WIRE INTO ENGAGEMENT WITH THE REAR SURFACE OF SAID FORWARD CONVOLUTION, THE CUTTING OF SAID FORWARD CONVOLUTION OVERLAPPING AND CUTTING AWAY A HELICALLY TERMINAL PART OF THE WIDTH OF THE RAMP AS SAID FORWARD CONVOLUTION PROGRESSIVELY BECOMES ONE OF SAID SUCCEEDING CONVOLUTIONS AND SAID CUTTING AWAY BEING OF SUCH EXTEND AS TO FORM THE SUCCEEDING CONVOLUTION OF THE SAME WIDTH AS THE PITCH OF THE HELICAL CUT.
References Cited (Backward Citations)
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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 |