Agitating – Mortar mixer type – Movable chute
Reexamination Certificate
2006-04-25
2006-04-25
Sorkin, David (Department: 1723)
Agitating
Mortar mixer type
Movable chute
C092S061000, C092S146000
Reexamination Certificate
active
07033066
ABSTRACT:
A hydraulic actuator assembly comprises a pair of hydraulic actuators having cylinders, pistons, and piston rods that are ganged together for extension of their respective piston rods in longitudinally opposite directions wherein at least one of the actuators comprises an anti-rotation mechanism that prevents rotation of the actuator assembly about its longitudinal axis. The anti-rotation mechanism comprises an axial anti-rotation rod rigidly attached to a cylinder having a non-circular cross-section slidably complementary to a non-circular aperture in a hollow piston rod. The piston rod can travel longitudinally along the anti-rotation rod, but is prevented from rotating by the non-circular cross-section.
REFERENCES:
patent: 1145908 (1915-07-01), McElroy
patent: 2672327 (1954-03-01), Oury
patent: 2880977 (1959-04-01), Maxon
patent: 2968382 (1961-01-01), Oury
patent: 3334872 (1967-08-01), Hansen et al.
patent: 3481440 (1969-12-01), Jackoboice
patent: 4341423 (1982-07-01), Fachini et al.
patent: 4363380 (1982-12-01), Rued et al.
patent: 4392563 (1983-07-01), Holman
patent: 4439943 (1984-04-01), Brakhage
patent: 4442759 (1984-04-01), Elser
patent: 4462580 (1984-07-01), Nielsen
patent: 4651628 (1987-03-01), Zag et al.
patent: 4726284 (1988-02-01), Green
patent: 4736675 (1988-04-01), Stoll
patent: 4750408 (1988-06-01), Stoll
patent: 5178252 (1993-01-01), Smith
patent: 5192178 (1993-03-01), Silbernagel
patent: 5431087 (1995-07-01), Kambara
patent: 5551776 (1996-09-01), Zimmerman
patent: 5761985 (1998-06-01), Stoll
patent: 5974948 (1999-11-01), Thompson et al.
patent: 6023983 (2000-02-01), Gerber et al.
patent: 6041907 (2000-03-01), Bonnette
patent: 6129003 (2000-10-01), Udagawa
patent: 6176114 (2001-01-01), Gmurowski
patent: 6352018 (2002-03-01), Krisher
patent: 6386291 (2002-05-01), Short et al.
patent: 6386571 (2002-05-01), Vollmer et al.
McGarry Bair PC
Sorkin David
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