Piston and scraper assembly

Details Piston and scraper assembly Piston and scraper assembly

2007-08-21

2007-08-21

Lazo, Thomas E. (Department: 3745)

Expansible chamber devices

Piston

With spring means for biasing side wall portion radially

C092S255000, C210S198200

Reexamination Certificate

active

10541286

ABSTRACT:
A piston and scraper assembly (26) for a high-pressure liquid chromatography column (1) is provided with a snap lock between the piston (5) and the scraper (25). The snap lock comprises a groove (23) in the piston wall (17), a complementary groove (39) in the inner face of the scraper (25) and a locking, sealing and biasing means such as a resilient O-ring (43) which fits into said grooves.

REFERENCES:
patent: 2814540 (1957-11-01), Southerwick
patent: 3747479 (1973-07-01), Nightingale et al.
patent: 3966609 (1976-06-01), Godbille et al.
patent: 4804290 (1989-02-01), Balsells
patent: 4889351 (1989-12-01), Frost
patent: 4891133 (1990-01-01), Colvin, Jr.
patent: 5113747 (1992-05-01), Pignerol
patent: 5169522 (1992-12-01), Shalon et al.
patent: 5192433 (1993-03-01), Shalon
patent: 5378361 (1995-01-01), Baeckstrum
patent: 5423982 (1995-06-01), Jungbauer et al.
patent: 5693223 (1997-12-01), Yamada et al.
patent: 6802968 (2004-10-01), Leavesley et al.
patent: 6923908 (2005-08-01), Thompson et al.
patent: 6932904 (2005-08-01), Laub et al.
patent: 0 476 996 (1992-03-01), None
patent: 646249 (1950-11-01), None

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