Free piston device with time varying clearance seal

Details Free piston device with time varying clearance seal Free piston device with time varying clearance seal

2006-03-14

2006-03-14

Look, Edward K. (Department: 3745)

Expansible chamber devices

Effective area of working member end face selectively variable

With diaphragm

C092S240000

Reexamination Certificate

active

07011010

ABSTRACT:
A free piston device which is particularly applicable for use with a linear motor for providing acoustic energy to a cryocooler for generating refrigeration at cryogenic temperatures which comprises a time varying clearance seal to counteract piston drift.

REFERENCES:
patent: 1762602 (1930-06-01), Wideman
patent: 1776147 (1930-09-01), Clagett
patent: 2895773 (1959-07-01), McConnaughey
patent: 2907304 (1959-10-01), Macks
patent: 4911618 (1990-03-01), Suganami et al.
patent: 6901755 (2005-06-01), Corey et al.

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