Patent US3719366A successfully refreshed from Google Patents.
US3719366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heterogeneous lip-type packings
Assignee: Utex Industries Inc
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Filing: 1971-05-26
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Granted: 1973-03-06
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Expires: 1991-05-26
Abstract
Abstract A packing comprised of an annular body having a sealing section and a reinforcing section in which the sealing section which is of a resilient material has at least one sealing lip and the reinforcing section is made up of a strip of fabric wound into a helix with the convolutions of the helix superimposed upon one another and bonded together to form an integral section. The threads of the fabric in the strip are disposed obliquely to the opposed edges of the strip such that when the strip is wound into the helix, substantially the ends of the threads are exposed to the wearing surfaces of the reinforcing section. The invention also includes a method of manufacturing the packing in which the sealing section, having the sealing lip, is formed from a suitable resilient material and is then bonded to the reinforcing section which has been formed by winding the strip of fabric into a helix with the convolutions superimposed upon one another and then bonding together the convolutions.
Inventors
- 👤 A Pippert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:08
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/166; Y; Y10; Y10S; Y10S277/00; Y10S277/935; Y10S277/936
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
83 words
A packing comprising an annular body having a sealing section and a reinforcing section, said sealing section comprising a resilient material and having at least one sealing lip thereon, said reinforcing section comprising At least one fabric and formed from superimposed, convolutions of a strip of said fabric, said convolutions being bonded together, the threads of said strip being disposed obliquely to the opposed edges of said strip, said sealing section and said reinforcing section being bonded together to form said annular body.
Claim 2
Dependent Claim
83 words
A packing comprising an annular body having a sealing section and a reinforcing section, said sealing section comprising a resilient material and having at least one sealing lip thereon, said reinforcing section comprising At least one fabric and formed from superimposed, convolutions of a strip of said fabric, said convolutions being bonded together, the threads of said strip being disposed obliquely to the opposed edges of said strip, said sealing section and said reinforcing section being bonded together to form said annular body.
Claim 3
Dependent Claim
83 words
A packing comprising an annular body having a sealing section and a reinforcing section, said sealing section comprising a resilient material and having at least one sealing lip thereon, said reinforcing section comprising At least one fabric and formed from superimposed, convolutions of a strip of said fabric, said convolutions being bonded together, the threads of said strip being disposed obliquely to the opposed edges of said strip, said sealing section and said reinforcing section being bonded together to form said annular body.
Claim 4
Dependent Claim
83 words
A packing comprising an annular body having a sealing section and a reinforcing section, said sealing section comprising a resilient material and having at least one sealing lip thereon, said reinforcing section comprising At least one fabric and formed from superimposed, convolutions of a strip of said fabric, said convolutions being bonded together, the threads of said strip being disposed obliquely to the opposed edges of said strip, said sealing section and said reinforcing section being bonded together to form said annular body.
Claim 5
Dependent Claim
21 words
The packing of claim 1 wherein said reinforcing section comprises a plurality of fabrics formed from separate strips of said fabrics.
Claim 6
Dependent Claim
33 words
The packing of claim 1 wherein said fabric is impregnated with an agent capable of molding to shape when heated and after cooling of retaining such shape and of bonding together said convolutions.
Claim 7
Dependent Claim
23 words
The packing of claim 1 wherein said fabric is selected from the group consisting of cotton, asbestos, nylon, polyester, fiber glass, and linen.
Claim 8
Dependent Claim
14 words
The packing of claim 1 wherein said resilient material comprises a synthetic polymeric material.
Claim 9
Dependent Claim
14 words
The packing of claim 1 wherein said resilient material comprises a natural polymeric material.
Claim 10
Dependent Claim
15 words
The packing of claim 1 wherein said sealing lip projects radially outward from said packing.
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) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |