Injection moldable piston rings

Details Injection moldable piston rings Injection moldable piston rings

2004-12-29

2008-11-25

Kramer, Devon (Department: 3746)

Pumps

Expansible chamber type

Having pumping chamber pressure responsive distributor

C417S571000, C092S248000, C092S249000, C092S253000, C277S438000

Reexamination Certificate

active

07455506

ABSTRACT:
An oil-less/oil-free air brake compressor comprising a bore, a piston positioned for reciprocating in the bore, the piston having an annular recess and a rigid polymeric piston ring received within the annular recess, the piston ring having a predetermined non-circular profile in the free state.

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V.V. Dunaevsky, Analysis of Distortions of Cylinder and Conformability of Piston Rings, Tribology Transactions, vol. 33 (1990).
V.V. Dunaevsky, Analysis of Elastic Distortions of a Piston Ring in the Reciprocating Air Brake Compressor Due to the Installation Stresses, SAE 1999-01-3770 (1999).
Reinhard Mueller, The Problem of the Form-Filling Capacity of Piston Rings in Noncircular Bores of the Same Circumference, MTZ, vol. 31 (1970).
PCT Notification of transmittal of the International Search Report, Mar. 14, 2006.

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