Patent US4510664A successfully refreshed from Google Patents.
US4510664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a packing ring
Assignee: RUBBER-EN KUNSTSTOFFABRIEK A DUTCH CORP
•
Filing: 1983-02-18
•
Granted: 1985-04-16
•
Expires: 2003-02-18
Abstract
Abstract In order to produce a packing ring having a stiffening ring by a method which dispenses with the use of a complicated and expensive mold, an extrusion having the desired cross-section of the packing ring and having a cavity, extending in the extrusion direction, for the reception of the stiffening ring is firstly produced. The extruded material cut to length in accordance with the desired circumference of the packing ring is slipped onto a wire which is similarly cut to length and bent into a circle. The ends of the extruded material are pushed back while the ends of the wire are welded together, so that a closed stiffening ring is produced. Then the material ends are joined together and are bonded or vulcanized to one another.
Inventors
- 👤 Pieter J. Lock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:55
CPC Classifications
F; F16; F16L; F16L17/00; F16L17/02; F16L17/03; F16L17/035; B; B29; B29C; B29C65/00; B29C65/02; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/50; B29C66/51; B29C66/52; B29C66/524; B29C66/5241; B29C66/70; B29C66/71; B29C53/00; B29C53/36; B29K; B29K2105/00; B29K2105/06; B29K2105/20; B29L; B29L2031/00; B29L2031/001; B29L2031/003; B29L2031/26; B29L2031/709; B29L2031/7096; Y; Y10; Y10S; Y10S29/00; Y10S29/034; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1036; Y10T156/1038; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/4987; Y10T29/49906
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
155 words
The method of producing an annular or other configuration packing ring which comprises the steps of forming a length of elastomeric material having uniform cross-sectional configuration corresponding to the desired cross-section of the packing ring, said length corresponding substantially to the circumferential extent of said ring, said length including a lengthwisely extending cavity, providing a length of wire corresponding generally to the length of the cavity in said length of elastomeric material, said wire being relatively rigid as compared to said elastomeric material and having cross-sectional configuration sized to be intimately received in said cavity, bending said wire to a desired configuration, thereafter introducing said wire into said cavity, to thereby cause said length of elastomeric material to be deformed into said annular or other configuration, causing the free ends of said wire to be mutually interconnected and thereafter causing the free ends of said length of elastomeric material to be juxtaposed in abutting relation.
Claim 2
Independent Claim
155 words
The method of producing an annular or other configuration packing ring which comprises the steps of forming a length of elastomeric material having uniform cross-sectional configuration corresponding to the desired cross-section of the packing ring, said length corresponding substantially to the circumferential extent of said ring, said length including a lengthwisely extending cavity, providing a length of wire corresponding generally to the length of the cavity in said length of elastomeric material, said wire being relatively rigid as compared to said elastomeric material and having cross-sectional configuration sized to be intimately received in said cavity, bending said wire to a desired configuration, thereafter introducing said wire into said cavity, to thereby cause said length of elastomeric material to be deformed into said annular or other configuration, causing the free ends of said wire to be mutually interconnected and thereafter causing the free ends of said length of elastomeric material to be juxtaposed in abutting relation.
Claim 3
Dependent Claim
45 words
The method in accordance with claim 1 and including the step of retracting the elastomeric material to cause the ends of said wire to be exposed beyond the ends of said length in advance of causing said ends of said wire to be mutually interconnected.
Claim 4
Dependent Claim
28 words
The method in accordance with claim 2 and including the step of bonding said juxtaposed ends of said elastomeric material after interconnection of said ends of said wire.
References Cited (Backward Citations)
US834611A
Cited
US1179562A
Cited
US1721155A
Cited
FR767275A
Cited
US2148038A
Cited
FR1138633A
Cited
US3162456A
Cited
US3660192A
Cited
US3591190A
Cited
US3723216A
Cited
GB1567199A
Cited
US4368894A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-04-15 | 1988-10-15 | 1989-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-15 | 1992-10-15 | 1993-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-15 | 1996-10-15 | 1997-04-16 | $7700.00 | Window Closed / Lapsed |