US 6,981,693 B1
Control shaft for ceramic control valve of faucet
Chia-Po Chang, Changhua Hsien (Taiwan)
Assigned to Hain Yo Enterprises Co., Ltd., Lu-Kang (Taiwan)
Filed on Apr. 21, 2004, as Appl. No. 10/829,108.
Int. Cl. F16K 21/00 (2006.01)
U.S. Cl. 251—368 7 Claims
OG exemplary drawing
 
1. A control valve of a faucet, comprising:
a base having an inside formed with a water outlet;
a lower ceramic block mounted on the base and having an inside formed with a conducting channel, a cold water inlet and a hot water inlet;
an upper ceramic block mounted on the lower ceramic block and having an inside formed with a conducting opening;
a coupling block mounted on the upper ceramic block;
a bottom bushing mounted on the coupling block;
an inner barrel mounted on the bottom bushing and having an inner wall formed with a through hole;
a housing mounted on the base and enclosed around the inner barrel; and
a control shaft mounted in the inner barrel and having an upper end protruding outward from the through hole of the inner barrel, wherein:
the control shaft has a lower end formed with a drive member rested on the inner wall of the inner barrel; and
the drive member of the control shaft has a peripheral wall formed with a plurality of flattened faces.