Expansible chamber devices – Piston – Open-ended hollow skirt type
Patent
1985-08-12
1987-05-12
Look, Edward K.
Expansible chamber devices
Piston
Open-ended hollow skirt type
291565R, 29458, 92231, 123193P, F16J 104
Patent
active
046640215
ABSTRACT:
The detonation-resistant material is applied to a piston to reduce the likelihood of damage to the piston caused by pinking or knocking. The detonation-resistant material, which may be nickel or a nickel based material, is applied to the upper part of the ring band and around an annular portion of the crown adjacent the edge of the crown. The ring band is, before treatment, machined to form a recess extending therearound which is filled with the detonation-resistant material by a plating process. Thus, on the ring band, the detonation-resistant material does not extend radially outwardly of the remainder of the ring band. This reduces the possibility of the detonation-resistant material scraping or scuffing on the associated cylinder or liner during movement of the piston in the associated cylinder or liner and also reduces the likelihood of the detonation-resistant material being scraped off.
REFERENCES:
patent: 1256954 (1918-02-01), Travers
patent: 1467255 (1923-09-01), Thomson
patent: 2323074 (1943-06-01), Neugebauer et al.
patent: 2403455 (1946-07-01), Phillips
patent: 2992869 (1961-07-01), Van Der Horst
patent: 3075817 (1963-01-01), Mayes
patent: 3203321 (1965-08-01), Rosen
patent: 3405610 (1968-10-01), Hill et al.
patent: 3911891 (1975-10-01), Dowell
patent: 4334507 (1982-06-01), Kohnert et al.
Proceedings of the Institute of Mechanical Engineers part 2A, vol. 179, No. 6, 1964/1965, p. 192, left-hand col., last six lines.
AE PLC
Look Edward K.
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