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US 4,248,915 AGranted
Process for applying a thick inset of antifriction resins on a surface
AssigneeNuovo Pignone S.p.A.
InventorCostantino Vinciguerra
Life of this patent
Estimating the term…
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.
Claims8
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.
2 more elements
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.
2 more elements
Dependencies are inferred from the claim text.