Valves and valve actuation – With selective flow regulation – Rotary
Patent
1990-05-18
1991-10-22
Rosenthal, Arnold
Valves and valve actuation
With selective flow regulation
Rotary
251205, F16K 306, F16K 332
Patent
active
050588605
ABSTRACT:
A pair of plates of a hard material (a socalled ceramic material or the like), intended to form the members for flow control of a faucet of the socalled screw type, and having an extended control field, wherein at least one of the sides which define the passage opening of at least one of the plates of the pair has substantially the shape of an arc of linear spiral (Archimedes' spiral), and the end portion having the smaller width of the passage opening defined by this arc of linear spiral is located near the plate periphery. The stated shape like an arc of linear spiral may be chosen for one side of the passage opening of one plate only, or even for one side of the passage openings of both plates, but in this latter case it is needed that the two spirals have a different slope. By means of this pair of plates it is possible to obtain control angles extending in the field from 1/2 turn and 3/4 of a turn, for example angles of 230.degree. or 270.degree..
REFERENCES:
patent: 3424200 (1969-01-01), Marley et al.
patent: 3812882 (1974-05-01), Taylor
patent: 3934612 (1976-01-01), Kast
patent: 4327758 (1982-05-01), Uhlmann
patent: 4887793 (1989-12-01), Hernandez et al.
Rosenthal Arnold
Studio Tecnico Sviluppo e Ricerche S.T.S.R. S.r.l.
LandOfFree
Pair of hard material plates for a faucet of the screw type, hav does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pair of hard material plates for a faucet of the screw type, hav, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pair of hard material plates for a faucet of the screw type, hav will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-103928