Valves and valve actuation – Fluid actuated or retarded – Pilot or servo type motor
Reexamination Certificate
2007-03-20
2007-03-20
Look, Edward K. (Department: 3751)
Valves and valve actuation
Fluid actuated or retarded
Pilot or servo type motor
C251S030040
Reexamination Certificate
active
10968565
ABSTRACT:
A flush valve includes a body having an inlet an outlet and a seat between the inlet and the outlet. The seat defines an opening therethrough. A cover is attached to the body. A piston is engageable with the seat and movable within the body and cover to an extent permitted by a stop formed in the body or cover. The piston includes a guide portion extending through the seat opening and downstream of the seat. The guide portion has ribs and a skirt. The axial length of both the ribs and skirt is greater than the available piston travel so the flow passages through the seat opening at all times are defined by the skirt and ribs.
REFERENCES:
patent: 4261545 (1981-04-01), Allen
patent: 5232194 (1993-08-01), Saadi et al.
patent: 5476244 (1995-12-01), Carroll et al.
patent: 5881993 (1999-03-01), Wilson et al.
patent: 6299127 (2001-10-01), Wilson
patent: 6408873 (2002-06-01), Hall et al.
patent: 6499716 (2002-12-01), Nortier
patent: 6550744 (2003-04-01), Nortier
Cook Alex McFarron Manzo Cummings & Mehler, Ltd.
Fristoe Jr. John K.
Look Edward K.
LandOfFree
Piston guide for piston-type flushometer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Piston guide for piston-type flushometer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Piston guide for piston-type flushometer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3734075