Pistons with wear resistant solid film lubricant coatings

Details Pistons with wear resistant solid film lubricant coatings Pistons with wear resistant solid film lubricant coatings

1987-07-17

1989-05-23

Dixon, Jr., William R.

Internal-combustion engines

Particular piston and enclosing cylinder construction

Cylinder detail

252 12, 4273722, 4273855, 4273882, 4273885, 4273935, F22B 500, B05D 302

Patent

active

048319775

ABSTRACT:
Reciprocating engine parts which involve substantially continuous frictional contact are coated with a solid film lubricant having excellent wear characteristics and adhesion. The parts in question are pistons, and the area to which the wear resistant solid lubricant film is bonded is the piston skirt--i.e., all or a portion of the area below the piston rings. The lubricant film is composed of a polyimide of 2,2-bis[4-(4-aminophenoxy)phenyl]hexafluoropropane ("4-BDAF") and an aromatic tetracarboxylic acid (or dianhydride or ester thereof) containing from 25 to 125 parts by weight of fluorinated carbon per 100 parts by weight of the polyimide resin ("phr"), and preferably about 30 to about 100 phr of the fluorinated carbon.

REFERENCES:
patent: 3252905 (1966-05-01), Schaeffer
patent: 3356648 (1987-12-01), Rogers
patent: 3380843 (1968-04-01), Davis
patent: 3542735 (1987-11-01), Lynch
patent: 3652409 (1972-03-01), Mack et al.
patent: 3671486 (1972-06-01), Dixon et al.
patent: 3761453 (1973-09-01), Jones
patent: 3781205 (1973-12-01), Carins et al.
patent: 3792022 (1974-02-01), Jones
patent: 3908038 (1975-09-01), Nienart et al.
patent: 3926913 (1975-12-01), Jones et al.
patent: 3951902 (1976-04-01), Jones et al.
patent: 3959350 (1976-05-01), Rogers
patent: 4012478 (1977-03-01), Horikawa et al.
patent: 4100138 (1978-07-01), Bilow et al.
patent: 4111906 (1978-09-01), Jones et al.
patent: 4173700 (1979-11-01), Green et al.
patent: 4196277 (1980-04-01), Jones et al.
patent: 4203922 (1980-05-01), Jones et al.
patent: 4283521 (1981-08-01), Jones
patent: 4376710 (1983-03-01), Gardos et al.
patent: 4435839 (1984-03-01), Gu et al.
patent: 4454310 (1984-06-01), Oka et al.
patent: 4477648 (1984-10-01), Jones et al.
patent: 4521623 (1985-06-01), Jones et al.
patent: 4522880 (1985-06-01), Klostermeier et al.
patent: 4528004 (1985-07-01), Makino et al.
patent: 4528216 (1985-07-01), Ogura et al.
patent: 4532054 (1985-07-01), Johnson
patent: 4533574 (1985-08-01), Fryd et al.
patent: 4535101 (1985-08-01), Lee et al.
patent: 4543295 (1985-09-01), St. Clair et al.
patent: 4562100 (1985-12-01), Fryd et al.
patent: 4595548 (1986-06-01), St. Clair et al.
patent: 4603061 (1986-07-01), St. Clair et al.
patent: 4690999 (1987-09-01), Numata et al.
patent: 4759958 (1988-07-01), Numata et al.
Published Patent Application NASA Case No. LEW-12,876-2, (Ser. No. 393,583, filed Jun. 30, 1982), No. N83-29392.
Published International Application No. WO 84/04102, Undated brochure entitled "NR-150 Polyimide Composites", (14 pages plus 8 pages of tables and figures).
Paper entitled "371.degree. C. Mechanical Properties of Graphite/Polyimide Composites" by Peter Delvigs.
Brochure entitled Product Data--THERMID FA-700, (7 pages including tables and graphs).
Serafini et al., NASA Technical Memorandum 79039, (Apr. 106, 1979).
Serafini et al., NASA Technical Memorandum NASA TM X-71894, (Apr. 6-8, 1976).
Delvigs et al., NASA Technical Memorandum 79062, (May 8-10, 1979).
Delvigs et al., National SAMPE Symposium & Exhibition Proceedings, vol. 24, No. 2, pp. 1053-1068, (1979).
Serafini et al., NASA Technical Memorandum 82821, (May 4-6, 1982).
Serafini, NASA Technical Memorandum 83047, (Nov. 10-12, 1982).
"THERMID Polyimides", Brochure of National Starch and Chemical Corporation, (undated).

Affiliated with

Also associated with

Rating

Pistons with wear resistant solid film lubricant coatings does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pistons with wear resistant solid film lubricant coatings, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pistons with wear resistant solid film lubricant coatings will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1723026