Classifying – separating – and assorting solids – Sifting – Elements
Reexamination Certificate
2005-05-17
2005-05-17
Walsh, Donald P. (Department: 3653)
Classifying, separating, and assorting solids
Sifting
Elements
C209S309000, C209S331000
Reexamination Certificate
active
06892889
ABSTRACT:
A screen system employs a resiliently mounted housing, a vibration generator mounted to the housing, a mounting frame fixed to the resiliently mounted housing and a support surface. This system receives a screen including a screen frame and pre-tensioned screen cloth. The frame includes an inwardly extending mounting flange accessible from below the screen when placed in the housing. Clips pivotally mounted relative to the mounting frame include a first rounded lever extending upwardly to selectively engage the inwardly extending mounting flange. Second levers extend downwardly to cooperate with actuators. The actuators include inflatable bodies with contacts which, upon inflation, force the clips to engage the inwardly extending mounting flanges. This engagement retains the screen on a resiliently mounted housing and is able to further tension the screen in place.
REFERENCES:
patent: 231382 (1880-08-01), Wells
patent: 418862 (1890-01-01), Bryan
patent: 951032 (1910-03-01), Spring et al.
patent: 3211089 (1965-10-01), Messerschmidt
patent: 4082657 (1978-04-01), Gage
patent: 4219412 (1980-08-01), Hassall
patent: 4347129 (1982-08-01), Rutherford
patent: 4582597 (1986-04-01), Huber
patent: 4613432 (1986-09-01), Racine
patent: 4810372 (1989-03-01), Jones
patent: 4968366 (1990-11-01), Hukki et al.
patent: 5221008 (1993-06-01), Derrick, Jr. et al.
patent: 5226546 (1993-07-01), Janssens et al.
patent: 5326471 (1994-07-01), Pietzsch
patent: 5615776 (1997-04-01), Bjorklund et al.
patent: 5785461 (1998-07-01), Lambert
patent: 6253926 (2001-07-01), Woodgate
patent: 6283303 (2001-09-01), Lane et al.
patent: 6439392 (2002-08-01), Baltzer
U.S. Appl. No. 09/4432,921, filed Nov. 2, 1999, to Ari M. Hukki et al.
Hukki Ari M.
King Keith J.
Fulbright & Jaworski L.L.P.
M-I L.L.C.
Miller Jonathan R
Walsh Donald P.
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