US4248915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for applying a thick inset of antifriction resins on a surface
Assignee: Nuovo Pignone SpA
•
Filing: 1979-06-27
•
Granted: 1981-02-03
•
Expires: 1999-06-27
Abstract
Abstract A process is disclosed for applying a thick inset of an antifriction or a thermosetting resin on a metallic surface, comprising the steps of forming a set of parallel and adjoining grooves on said metallic surface, jumping-up alternately the intergroove ridges in order to extend the anchorage surface for the resin and sintering the resin, such as Teflon, on the metallic surface which has been so prepared.
Inventors
- 👤 Costantino Vinciguerra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:05
CPC Classifications
B; B05; B05D; B05D3/00; B05D3/12; B05D5/00; B05D5/08; B05D5/083; B05D5/086; F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/20; F16C33/203; F16C33/205; F16C33/208; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/3496; B05D2350/00; B05D2350/30; B05D2350/33; B05D2350/38; B21; B21H; B21H7/00; B21H7/14; F16C2208/00; F16C2208/20; F16C2208/30; F16C2208/32; F16C2220/00; F16C2220/20; F16C2240/00; F16C2240/40; F16C2240/60; Y; Y10; Y10S; Y10S29/00; Y10S29/023; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49938; Y10T29/49941; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
79 words
A process for applying a layer of an anti-friction resin to a metallic surface comprising: (a) forming parallel and adjacent grooves on said surface, said adjacent grooves separated by a ridge; (b) jumping-up said ridges to form an alternating series of pushed down sections in which an overhang is formed and sections in which the original height of the ridge is maintained; (c) placing a layer of the anti-friction resin on said surface; and (d) sintering said layered surface.
Claim 2
Dependent Claim
79 words
A process for applying a layer of an anti-friction resin to a metallic surface comprising: (a) forming parallel and adjacent grooves on said surface, said adjacent grooves separated by a ridge; (b) jumping-up said ridges to form an alternating series of pushed down sections in which an overhang is formed and sections in which the original height of the ridge is maintained; (c) placing a layer of the anti-friction resin on said surface; and (d) sintering said layered surface.
Claim 3
Dependent Claim
28 words
The process according to claim 1 further comprising forming said alternating sections by contacting said metal surface with a roller having intermittently spaced knurls transverse to said ridges.
Claim 4
Dependent Claim
19 words
The process according to claim 1 wherein said ridges have a thickness between about 0.01 mm and 1.0 mm.
Claim 5
Dependent Claim
19 words
The process according to claim 3 wherein the thickness of said ridges is between 0.01 mm and 0.2 mm.
Claim 6
Dependent Claim
42 words
The process according to claims 1 or 3 wherein said grooves have a depth of between about 3.5 and 4.5 times the thickness of said ridge and a width of between about 2.5 times and 3.5 times the thickness of said ridge.
Claim 7
Dependent Claim
122 words
A process for applying a layer of an antifriction resin to a metallic surface compising: (a) forming parallel and adjacent grooves on said surface, said adjacent grooves separated by a ridge and having a depth of between about 3.5 and 4.5 times the thickness of said ridge and a width of between about 2.5 times and 3.5 times the thickness of said ridge; (b) jumping-up said ridges to form an alternating series of pushed down sections in which an overhang is formed and sections in which the original height of the ridge is maintained with a roller having intermittently spaced knurls transverse to said ridges; (c) placing a layer of the anti-friction resin on said surface; and (d) sintering said layered surface.
Claim 8
Dependent Claim
122 words
A process for applying a layer of an antifriction resin to a metallic surface compising: (a) forming parallel and adjacent grooves on said surface, said adjacent grooves separated by a ridge and having a depth of between about 3.5 and 4.5 times the thickness of said ridge and a width of between about 2.5 times and 3.5 times the thickness of said ridge; (b) jumping-up said ridges to form an alternating series of pushed down sections in which an overhang is formed and sections in which the original height of the ridge is maintained with a roller having intermittently spaced knurls transverse to said ridges; (c) placing a layer of the anti-friction resin on said surface; and (d) sintering said layered surface.
Claim 9
Dependent Claim
24 words
The process according to claims 1 or 6 wherein said anti-friction resin is selected from the group consisting of pure polyetrafluoroethylene and filled polytetrafluoroethylene.
Claim 10
Dependent Claim
20 words
The process according to claims 1 or 6 wherein said anti-friction resin layer has a thickness of about 2 mm.
References Cited (Backward Citations)
US2285583A
Cited
US2314902A
Cited
US3008601A
Cited
GB881175A
Cited
GB1015036A
Cited
US3389749A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-02-03 | 1984-08-04 | 1985-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-03 | 1988-08-04 | 1989-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-03 | 1992-08-04 | 1993-02-03 | $7700.00 | Window Closed / Lapsed |