Patent US3186885A successfully refreshed from Google Patents.
US3186885A
Expired / Lapsed
US
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Method and apparatus for making a resilient rolling lobe diaphragm of cord and elastomeric material
Assignee: Dunlop Rubber Co Ltd
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Filing: 1961-01-17
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Granted: 1965-06-01
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Expires: 1981-01-17
Abstract
No abstract record available.
Inventors
- 👤 Iles Harold Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:49
CPC Classifications
F; F16; F16J; F16J3/00; F16J3/04; F16J3/041; B; B29; B29C; B29C70/00; B29C70/58; B29D; B29D22/00; B29D22/02; B29D22/023
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
175 words
A METHOD OF MANUFACTURING A ROLLING LOBE DIAPHRAGM WHICH COMPRISES WINDING A CORD OF TEXTILE MATERIAL ALTERNATELY FROM A PERIPHERAL, CIRCULAR, EDGE OF ONE OF TWO AXIALLY SPACED END PORTIONS OF A FORMING SPOOL TO A PERIPHERAL CIRCULAR, EDGE OF THE OTHER END PORTION TO FORM A SUBSTANTIALLY CYLINDRICAL ENCLOSURE OF PARALLEL CORD LENGTHS BETWEEN SAID END PERIPHERIES, TWISTING SAID END PORTIONS RELATIVELY TO EACH OTHER ABOUT THEIR COMMON AXIS WHILE MOVING SAID CIRCULAR PERIPHERIES TOWARD ECH OTHER DURING SAID TWISTING TO DRAW SAID CORD LENGTHS BETWEEN SAID CIRCULAR PERPHERIES IN SIDE-BY-SIDE POSITON TO AN INTERMEDIATE PORTION OF REDUCED DIAMETER SPACED FROM SAID CIRCULAR PERIPHERIES, EMBEDDING SAID CORDS IN A FLEXIBLE SHEET OF ELASTOMER TO FORM AN IMPERVIOUS ENCLOSURE AND TO MAINTAIN SAID CORD STRUCTURE ASSEMBLY ON REMOVAL OF SAID STRUCTURE FROM SAID FORMING SPOOL, MOUNTING A BEAD RING ON SAID INTERMEDIATE PORTION MIDWAY BETWEEN SAID END PERIPHERIES AND FOLDING THE RESULTING STRUCTURE ON ONE SAIDE OF SAID BEAD RING ABOUT SID BEAD RING ONTO THE STRUCTURE ON THE OPPOSITE SIDE OF SAID BEAD RING.
Claim 2
Independent Claim
175 words
A METHOD OF MANUFACTURING A ROLLING LOBE DIAPHRAGM WHICH COMPRISES WINDING A CORD OF TEXTILE MATERIAL ALTERNATELY FROM A PERIPHERAL, CIRCULAR, EDGE OF ONE OF TWO AXIALLY SPACED END PORTIONS OF A FORMING SPOOL TO A PERIPHERAL CIRCULAR, EDGE OF THE OTHER END PORTION TO FORM A SUBSTANTIALLY CYLINDRICAL ENCLOSURE OF PARALLEL CORD LENGTHS BETWEEN SAID END PERIPHERIES, TWISTING SAID END PORTIONS RELATIVELY TO EACH OTHER ABOUT THEIR COMMON AXIS WHILE MOVING SAID CIRCULAR PERIPHERIES TOWARD ECH OTHER DURING SAID TWISTING TO DRAW SAID CORD LENGTHS BETWEEN SAID CIRCULAR PERPHERIES IN SIDE-BY-SIDE POSITON TO AN INTERMEDIATE PORTION OF REDUCED DIAMETER SPACED FROM SAID CIRCULAR PERIPHERIES, EMBEDDING SAID CORDS IN A FLEXIBLE SHEET OF ELASTOMER TO FORM AN IMPERVIOUS ENCLOSURE AND TO MAINTAIN SAID CORD STRUCTURE ASSEMBLY ON REMOVAL OF SAID STRUCTURE FROM SAID FORMING SPOOL, MOUNTING A BEAD RING ON SAID INTERMEDIATE PORTION MIDWAY BETWEEN SAID END PERIPHERIES AND FOLDING THE RESULTING STRUCTURE ON ONE SAIDE OF SAID BEAD RING ABOUT SID BEAD RING ONTO THE STRUCTURE ON THE OPPOSITE SIDE OF SAID BEAD RING.
Claim 3
Dependent Claim
94 words
APPARATUS FOR MANUFACTURING A ROLLING LOBE DIAPHRAGM WHICH COMPRISES A SHAFT, A PAIR OF FORMING ELEMENTS SLIDABLY MOUNTED ON SAID SHAFT, AT LEAST ONE OF SAID FORMING ELEMENTS BEING ROTABLE ON SAID SHAFT, RELATIVE TO THE OTHER FORMING ELEMENT, EACH SAID FORMING ELEMENT HAVING A CYLINDRICAL SURFACE CO-AXIAL WITH SAID SHAFT AND HAVING TWO AXIALLY SPACED SERIES OF CIRCUMFERENTIALLY SPACED PROJECTIONS FORMING CORD-RECEIVING AND GUIDING NOTCHES, RESILIENT MEANS SEPARATING SAID FORMING ELEMENTS AND DEFORMABLE TO PERMIT SAID FORMING ELEMENTS TO MOVE TOWARD EACH OTHER, AND MEANS TO LOCK SAID FORMING ELEMENTS TO SAID SHAFT.
Claim 4
Dependent Claim
94 words
APPARATUS FOR MANUFACTURING A ROLLING LOBE DIAPHRAGM WHICH COMPRISES A SHAFT, A PAIR OF FORMING ELEMENTS SLIDABLY MOUNTED ON SAID SHAFT, AT LEAST ONE OF SAID FORMING ELEMENTS BEING ROTABLE ON SAID SHAFT, RELATIVE TO THE OTHER FORMING ELEMENT, EACH SAID FORMING ELEMENT HAVING A CYLINDRICAL SURFACE CO-AXIAL WITH SAID SHAFT AND HAVING TWO AXIALLY SPACED SERIES OF CIRCUMFERENTIALLY SPACED PROJECTIONS FORMING CORD-RECEIVING AND GUIDING NOTCHES, RESILIENT MEANS SEPARATING SAID FORMING ELEMENTS AND DEFORMABLE TO PERMIT SAID FORMING ELEMENTS TO MOVE TOWARD EACH OTHER, AND MEANS TO LOCK SAID FORMING ELEMENTS TO SAID SHAFT.
References Cited (Backward Citations)
US2873109A
Cited
US2980571A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-31 | 1968-11-30 | 1969-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-31 | 1972-11-30 | 1973-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-31 | 1976-11-30 | 1977-06-01 | $7700.00 | Window Closed / Lapsed |