Patent US4030872A successfully refreshed from Google Patents.
US4030872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined mould element and sealing ring
Assignee: Rieber and Son Plastic Industri AS
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Filing: 1975-08-28
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Granted: 1977-06-21
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Expires: 1995-08-28
Abstract
Abstract Combined mould element and sealing ring suitable for sealing off a joint between a socket end and an insert end of two cooperating pipes formed from thermoplastic material and for being used as a portion of a body of a mould for both fabricating the socket end of the one pipe and simultaneously inserting the ring in an internal groove in the socket end produced thereby. The main bulk of the sealing ring is composed of elastically yielding material having within its contour at least one zone composed of relatively non-elastic material capable of rendering the zone stable as regards its shape compared with the remainder of the ring. Conveniently, such zones are formed by stiffening rings permanently connected to the main bulk of the sealing ring.
Inventors
- 👤 Gunnar Parmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:03
CPC Classifications
F; F16; F16L; F16L47/00; F16L47/06; F16L47/08; F16L47/10; Y; Y10; Y10S; Y10S425/00; Y10S425/044; Y10S425/047; Y10S425/218
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
129 words
A combined mould element and sealing ring, suitable for sealing off a joint between a socket end and an insert end of two cooperating pipes formed from thermoplastic material and for being used as a portion of a body of a mould for both fabricating said socket end of the one pipe and simultaneously inserting said ring in an internal groove in the socket end produced thereby, said combined mould element and sealing ring having inner and outer surfaces defining therebetween a unitary body, the main bulk of said body being composed of elastically yielding material, whereas said body has within its contour at least one zone composed of relatively non-elastic material capable of rendering said zone stable as regards its shape compared with the remainder of said body.
Claim 2
Dependent Claim
129 words
A combined mould element and sealing ring, suitable for sealing off a joint between a socket end and an insert end of two cooperating pipes formed from thermoplastic material and for being used as a portion of a body of a mould for both fabricating said socket end of the one pipe and simultaneously inserting said ring in an internal groove in the socket end produced thereby, said combined mould element and sealing ring having inner and outer surfaces defining therebetween a unitary body, the main bulk of said body being composed of elastically yielding material, whereas said body has within its contour at least one zone composed of relatively non-elastic material capable of rendering said zone stable as regards its shape compared with the remainder of said body.
Claim 3
Dependent Claim
34 words
A combined mould element and sealing ring according to claim 1, wherein the at least one zone is formed by a rigid annular ring member permanently connected to the main bulk of said body.
Claim 4
Dependent Claim
36 words
A combined mould element and sealing ring according to claim 2, wherein said mould element has a leading surface and the ring member has a conical surface coincident with said leading surface of the mould element.
Claim 5
Dependent Claim
34 words
A combined mould element and sealing ring according to claim 2, wherein the ring member is hoop-shaped and is provided with a conical outer surface for forming an abutment for the hot pipe end.
Claim 6
Dependent Claim
51 words
A combined mould element and sealing ring according to claim 2, wherein said body has a leading surface portion and a back surface portion and the ring member has a surface coincident with the outer surface portion of said body extending between said leading surface portion and said back surface portion.
Claim 7
Dependent Claim
29 words
A combined mould element and sealing ring according to claim 5, wherein said surface provides longitudinal draining passages between said surface and the opposing surface of said socket end.
Claim 8
Dependent Claim
49 words
A combined mould element and sealing ring according to claim 2, wherein said body has a leading surface portion and a back surface portion and the outer surface portion of said body extending between said leading surface portion and said back surface portion is provided with longitudinal draining grooves.
Claim 9
Dependent Claim
38 words
A combined mould element and sealing ring according to claim 2, wherein the ring member has a partition wall portion embedded in said main bulk for individual support of two mutually opposed sealing portions of elastically yielding material.
Claim 10
Dependent Claim
60 words
A combined mould element and sealing ring according to claim 1, wherein said inner surface comprises a first and a second inner surface portion and a recessed inner surface portion therebetween, and the at least one zone is formed by a rigid relatively non-elastic annular ring member at least a part thereof being located generally of said recessed surface portion.
Claim 11
Dependent Claim
30 words
A combined mould element and sealing ring according to claim 9, wherein the ring member in addition extends axially over at least a part of said recessed inner surface portion.
Claim 12
Dependent Claim
28 words
A combined mould element and sealing ring according to claim 2, wherein the remainder of said body comprises a lip-forming, elastically yielding zone laterally of the ring member.
Claim 13
Dependent Claim
30 words
A combined mould element and sealing ring according to claim 1, wherein the non-elastic material is selected from a group of materials comprising metal, steel and a rigid plastic material.
Claim 14
Dependent Claim
19 words
A combined mould element and sealing ring according to claim 1, wherein the elastically yielding material is a rubber.
Claim 15
Dependent Claim
74 words
A combined mould element and sealing ring comprising a body of elastically yieldable material, said body having a first inner surface portion, a convex inner surface portion and a concave inner surface portion between said first and said convex inner surface portions, and an obliquely extending outer surface portion forming a leading edge with said first inner surface portion; and a rigid relatively non-elastic member disposed in said body in said outer surface portion.
Claim 16
Dependent Claim
74 words
A combined mould element and sealing ring comprising a body of elastically yieldable material, said body having a first inner surface portion, a convex inner surface portion and a concave inner surface portion between said first and said convex inner surface portions, and an obliquely extending outer surface portion forming a leading edge with said first inner surface portion; and a rigid relatively non-elastic member disposed in said body in said outer surface portion.
Claim 17
Dependent Claim
34 words
A combined mould element and sealing ring according to claim 14, wherein said rigid non-elastic member is an annular ring member having a conical surface coincident with the surface of said outer surface portion.
Claim 18
Dependent Claim
45 words
A combined mould element and sealing ring according to claim 14, wherein said body further has a curved back portion extending from said convex inner surface portion and a convexly curved outer surface portion between said curved back portion and said obliquely extending surface portion.
Claim 19
Dependent Claim
58 words
A combined mould element and sealing ring comprising a body of elastically yieldable material, said body having a first inner surface portion, a second inner surface portion, a recessed inner surface portion between said first and second portions, and an outer surface portion; and a rigid relatively non-elastic member disposed in said body at said outer surface portion.
Claim 20
Dependent Claim
58 words
A combined mould element and sealing ring comprising a body of elastically yieldable material, said body having a first inner surface portion, a second inner surface portion, a recessed inner surface portion between said first and second portions, and an outer surface portion; and a rigid relatively non-elastic member disposed in said body at said outer surface portion.
Claim 21
Dependent Claim
40 words
A combined mould element and sealing ring according to claim 17, wherein said second inner surface portion forms an inwardly directed lip and said recessed portion is sized to receive said lip upon deformation of said second inner surface portion.
Claim 22
Dependent Claim
31 words
A combined mould element and sealing ring according to claim 17, wherein said member is an annular ring member having a surface extending from an edge of said outer surface portion.
Claim 23
Dependent Claim
32 words
A combined mould element and sealing ring according to claim 17, wherein said member is an annular ring member having a conical surface coincident with the surface of said outer surface portion.
Claim 24
Dependent Claim
33 words
A combined mould element and sealing ring according to claim 20, wherein said ring member further has a curved portion extending from said conical surface over a back surface portion of said body.
Claim 25
Dependent Claim
24 words
A combined mould element and sealing ring according to claim 17, wherein said outer surface portion has longitudinal draining grooves in the surface thereof.
Claim 26
Dependent Claim
24 words
A combined mould element and sealing ring according to claim 17, wherein said ring member further has a partition wall embedded in said body.
Claim 27
Dependent Claim
22 words
A combined mould element and sealing ring according to claim 17, wherein said first inner surface portion of said body is conical.
Claim 28
Dependent Claim
57 words
A combined mould element and sealing ring comprising a body of elastically yieldable material, said body having a first inner surface portion, a second inner surface portion, a recessed inner surface portion between said first and said second inner surface portions, and an outer surface portion; and at least one rigid non-elastic member disposed in said body.
Claim 29
Dependent Claim
57 words
A combined mould element and sealing ring comprising a body of elastically yieldable material, said body having a first inner surface portion, a second inner surface portion, a recessed inner surface portion between said first and said second inner surface portions, and an outer surface portion; and at least one rigid non-elastic member disposed in said body.
Claim 30
Dependent Claim
34 words
A combined mould element and sealing ring according to claim 25, wherein said member is disposed on a back surface portion of said body located between said second portion and said outer surface portion.
Claim 31
Dependent Claim
65 words
A combined mould element and sealing ring comprising a body of elastically yieldable material, said body having a first inner surface portion, a second inner surface portion, and a recessed inner surface portion between said first and second portions, and an obliquely outer surface portion forming a leading edge with said first inner surface portion; and a rigid relatively non-elastic member disposed in said body.
Claim 32
Dependent Claim
65 words
A combined mould element and sealing ring comprising a body of elastically yieldable material, said body having a first inner surface portion, a second inner surface portion, and a recessed inner surface portion between said first and second portions, and an obliquely outer surface portion forming a leading edge with said first inner surface portion; and a rigid relatively non-elastic member disposed in said body.
Claim 33
Dependent Claim
32 words
A combined mould element and sealing ring according to claim 27, wherein said member is an annular ring member having a conical surface coincident with the surface of said leading surface portion.
Claim 34
Dependent Claim
32 words
A combined mould element and sealing ring according to claim 28, wherein said ring further has a curved portion extending from said conical surface over a back surface portion of said body.
Claim 35
Dependent Claim
24 words
A combined mould element and sealing ring according to claim 29, wherein said outer surface portion has longitudinal draining grooves in the surface thereof.
Claim 36
Dependent Claim
23 words
A combined mould element and sealing ring according to claim 27, wherein said ring further has a partition wall embedded in said body.
Claim 37
Dependent Claim
38 words
A combined mould element and sealing ring comprising a body of elastically yieldable material, said body defining between outer and inner surfaces a mainly drop-shaped cross-section; and at least one rigid relatively non-elastic member disposed in said body.
Claim 38
Dependent Claim
38 words
A combined mould element and sealing ring comprising a body of elastically yieldable material, said body defining between outer and inner surfaces a mainly drop-shaped cross-section; and at least one rigid relatively non-elastic member disposed in said body.
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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) | 1980-06-20 | 1980-12-20 | 1981-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-20 | 1984-12-20 | 1985-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-20 | 1988-12-20 | 1989-06-21 | $7700.00 | Window Closed / Lapsed |