US4047739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fitting and methods for making the same
Assignee: Individual
•
Filing: 1975-05-12
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Granted: 1977-09-13
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Expires: 1995-05-12
Abstract
Abstract A unitary fitting for fluid piping systems. A body has a socket member, and a hub member fits in the socket member. The members define the bottom and sides of a ring groove, and a resilient sealing ring fits in the groove. Each of the members has a wall which is adapted to be brought into abutment with the other, and a structural joinder joins the walls. A preferred means to form the structural joinder is to rotate the hub member in the socket member while the walls are in abutment, whereby the frictional forces will generate sufficient heat to cause the walls to fuse together, especially when they are formed of a thermoplastic plastic material, such as polyvinyl chloride.
Inventors
- 👤 W. Sidney Aitken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:39
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/06; B29C65/0672; B29C65/0609; B29C65/0618; B29C65/0627; B29C65/069; B29C65/48; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/12; B29C66/122; B29C66/1222; B29C66/1224; B29C66/1226; B29C66/124; B29C66/1244; B29C66/12445; B29C66/1246; B29C66/12463; B29C66/12469; B29C66/50; B29C66/51; B29C66/52; B29C66/522; B29C66/5221; B29C66/5229; B29C66/52291; B29C66/52292; B29C66/52296; B29C66/52297; B29C66/53; B29C66/534; B29C66/5344; B29C66/55; B29C66/70; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; F; F16; F16L; F16L17/00; F16L17/02; F16L17/03; F16L17/035; F16L47/00; F16L47/06; F16L47/08; F16L47/10; B29C65/4895; B29C66/71; B29L; B29L2023/00; B29L2023/22
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
200 words
A fitting comprising a body having a flow passage therethrough; a socket member on said body having an opening, a central axis, a peripheral socket abutment wall, and a peripheral socket sidewall in said opening; a ring-like hub member in said opening, said hub member having a peripheral hub abutment wall, a peripheral ring groove face, and a hub sidewall; a peripheral ring groove bottom surface on one of said members facing inwardly toward said central axis and adjacent to the said ring groove face; said members being made of a thermoplastic material, which material is fusible to like material by motion fusion, said abutment walls extending non-parallel to the axis, and being joined together solely by fusion of the surface materials of the abutment walls, all radial dimensions of the socket member from the socket sidewall to and including the opening end of the socket member being greater than any radial dimension of the hub member, there being no radial overlap of the hub member by any part of the socket member at said end of the socket member; and a resilient sealing ring in the ring groove formed by the ring groove face and ring groove bottom surface.
Claim 2
Dependent Claim
200 words
A fitting comprising a body having a flow passage therethrough; a socket member on said body having an opening, a central axis, a peripheral socket abutment wall, and a peripheral socket sidewall in said opening; a ring-like hub member in said opening, said hub member having a peripheral hub abutment wall, a peripheral ring groove face, and a hub sidewall; a peripheral ring groove bottom surface on one of said members facing inwardly toward said central axis and adjacent to the said ring groove face; said members being made of a thermoplastic material, which material is fusible to like material by motion fusion, said abutment walls extending non-parallel to the axis, and being joined together solely by fusion of the surface materials of the abutment walls, all radial dimensions of the socket member from the socket sidewall to and including the opening end of the socket member being greater than any radial dimension of the hub member, there being no radial overlap of the hub member by any part of the socket member at said end of the socket member; and a resilient sealing ring in the ring groove formed by the ring groove face and ring groove bottom surface.
Claim 3
Dependent Claim
45 words
A fitting according to claim 1 in which one of the abutment walls prior to joinder forms a different angle with the central axis than the other, whereby to form a reservoir for reception of slag away from the ring groove and between the members.
Claim 4
Dependent Claim
22 words
A fitting according to claim 2 in which prior to joinder an angle opens between the walls, opening away from said axis.
Claim 5
Dependent Claim
23 words
A fitting according to claim 2 in which at least some of the slag from the motion fusion is contained in said reservoir.
Claim 6
Dependent Claim
33 words
A fitting according to claim 1 in which both of the sidewalls form an angle with the central axis, and come into contiguity with one another when the abutment walls are fused together.
Claim 7
Dependent Claim
17 words
A fitting according to claim 5 in which a motion fusion joinder is formed between the sidewalls.
Claim 8
Dependent Claim
45 words
A fitting according to claim 5 in which one of the abutment walls prior to joinder forms a different angle with the central axis than the other, whereby to form a reservoir for reception of slag away from the ring groove and between the members.
Claim 9
Dependent Claim
22 words
A fitting according to claim 7 in which prior to joinder an angle opens between the walls, opening away from said axis.
Claim 10
Dependent Claim
19 words
A fitting according to claim 2 in which one of the abutment faces lies normal to the central axis.
Claim 11
Dependent Claim
44 words
A fitting according to claim 1 in which the sealing ring includes an outer bend which is spaced from the intersection of the ring groove face on the hub with the ring groove bottom surface, whereby to form a reservoir for reception of slag.
Claim 12
Dependent Claim
22 words
A fitting according to claim 1 in which a peripheral reservoir for reception of slag is formed in one of said walls.
Claim 13
Dependent Claim
22 words
A fitting according to claim 11 in which the peripheral reservoir for reception of slag is formed in the socket abutment wall.
Claim 14
Dependent Claim
22 words
A fitting according to claim 11 in which the peripheral reservoir for reception of slag is formed in the hub abutment wall.
Claim 15
Dependent Claim
21 words
A fitting according to claim 11 in which the peripheral reservoir for reception of slag is formed in the socket sidewall.
Claim 16
Dependent Claim
22 words
A fitting according to claim 10 in which a peripheral reservoir for reception of slag is formed in one of said walls.
Claim 17
Dependent Claim
22 words
A fitting according to claim 15 in which the peripheral reservoir for reception of slag is formed in the socket abutment wall.
Claim 18
Dependent Claim
22 words
A fitting according to claim 15 in which the peripheral reservoir for reception of slag is formed in the hub abutment wall.
Claim 19
Dependent Claim
21 words
A fitting according to claim 15 in which the peripheral reservoir for reception of slag is formed in the socket sidewall.
Claim 20
Dependent Claim
30 words
A fitting according to claim 1 in which at the point of fusion the lateral wall thickness of the hub member is generally greater than that of the socket member.
Claim 21
Dependent Claim
30 words
A fitting according to claim 2 in which at the point of fusion the lateral wall thickness of the hub member is generally greater than that of the socket member.
Claim 22
Dependent Claim
19 words
A fitting according to claim 1 in which the ring groove bottom surface is disposed on the socket member.
Claim 23
Dependent Claim
45 words
A fitting according to claim 21 in which one of the abutment walls prior to joinder forms a different angle with the central axis than the other, whereby to form a reservoir for reception of slag away from the ring groove and between the member.
Claim 24
Dependent Claim
18 words
A fitting according to claim 1 in which the ring groove bottom surface is on the hub member.
Claim 25
Dependent Claim
45 words
A fitting according to claim 23 in which one of the abutment walls prior to joinder forms a different angle with the central axis than the other, whereby to form a reservoir for reception of slag away from the ring groove and between the member.
Claim 26
Dependent Claim
19 words
A fitting according to claim 1 in which a peripheral ring groove face is also formed on the socket.
Claim 27
Dependent Claim
19 words
A fitting according to claim 2 in which a peripheral ring groove face is also formed on the socket.
Claim 28
Independent Claim
128 words
The method of assembling a ring-shaped hub member of a fitting in a circular opening in a socket member comprising pressing an abutting wall of each member against the other with a resilient ring placed in a ring groove that is contiguous to both abutting walls, said ring groove having an edge adjacent to both of said abutting walls which forms a peripheral reservoir, and generating heat by means of motion fusion, whereby to fuse the members together at said abutting walls and to discharge slag from the joinder into said reservoir, the wall thickness of the hub member at the point of fusion being greater than the wall thickness of the socket member, whereby distortion of the socket member as a consequence of the heat is minimized.
Claim 29
Independent Claim
128 words
The method of assembling a ring-shaped hub member of a fitting in a circular opening in a socket member comprising pressing an abutting wall of each member against the other with a resilient ring placed in a ring groove that is contiguous to both abutting walls, said ring groove having an edge adjacent to both of said abutting walls which forms a peripheral reservoir, and generating heat by means of motion fusion, whereby to fuse the members together at said abutting walls and to discharge slag from the joinder into said reservoir, the wall thickness of the hub member at the point of fusion being greater than the wall thickness of the socket member, whereby distortion of the socket member as a consequence of the heat is minimized.
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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) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |