Single-axis control automatic faucet

• US 4,709,728 A
• Filed: 08/06/1986
• Issued: 12/01/1987
• Est. Priority Date: 08/06/1986
• Status: Expired due to Fees

• Current Assignee: Chen Ying-Chung
• Original Assignee: Chen Ying-Chung
• Inventors: Ying-Chung, Chen
• Primary Examiner(s): Schwadron, Martin P.
• Assistant Examiner(s): Hepperle, Stephen M.
• Application Number:
  US06/893,724
• Time in Patent Office: 482 Days
• Field of Search: 137/636.4, 137/637.4, 137/599, 137/625.41, 137/625.47, 137/597, 4/623 X, 4/304, 4/313, 251/129.04
• US Class Current: 137/636.4
• CPC Class Codes: F16K 11/078 with pivoted and linearly movable closure members
• CPC Class Codes: F16K 31/02 electric F16K31/004 takes precedence; magnetic
• CPC Class Codes: Y10T 137/87088 Reciprocation along and rotation about same axis
• CPC Class Codes: Y10T 137/87249 Multiple inlet with multiple outlet
• CPC Class Codes: Y10T 137/87281 System having plural inlets
• CPC Class Codes: Y10T 137/87507 Electrical actuator
• CPC Class Codes: Y10T 137/87676 With flow control

Abstract

A faucet having an infrared sensor-actuated adjustable valve for automatic control of the discharge of water in response to the user'"'"'s hands being positioned below the discharge spout. The infrared sensor is activated to control a solenoid valve thereinside. A manual valve mechanism is also provided for effecting a discharge of water by manual control of a single-axis stem during periods when the sensor is inoperative. The temperature of the water discharge created by actuation of either the automatic valve or the manual valve is established by rotation of the stem.

Claims

1. A single axis water faucet for selectively discharging water automatically and manually, said faucet comprising:

(A) a manually actuable valve comprising;

(1) a cylindrical main valve body including;

(i) diametrically opposed hot water and cold water inlets,

(ii) a first water outlet at a first longitudinal end of said main valve body, and

(iii) a side water outlet spaced longitudinally from said first outlet, and

(2) adjusting cylinder means rotatably housed in said main valve body and comprising cylindrical wall means, said adjusting cylinder means including;

(i) a curved adjusting valve plate disposed at one longitudinal end of said adjusting cylinder means in overlying relationship to said hot and cold water inlets and arranged to be rotated along with said adjusting cylinder means to adjust the relative sizes of said hot water and old water inlets,

(ii) a hole formed in said cylindrical wall and arranged for alignment with said side water outlet of said main valve body,

(iii) a valve port for communicating said hot and cold water inlets with said hole to discharge water through said side water outlet,

(iv) removable retaining means for rotatably mounting said adjustable cylinder means to said main valve body,

(v) a manually actuable control stem longitudinally slidably disposed in said adjusting cylinder means and including a control rod and a valve plate disposed at one longitudinal end of said valve rod for closing and opening said valve port to control communication between said side water outlet and said cold and hot water inlets in response to longitudinal sliding movement of said valve stem relative to said adjusting cylinder means, and

(vi) a control knob operably connected to said valve stem and said adjusting cylinder means for effecting longitudinal movement of the former and rotation of the latter,

(3) said adjustable cylinder means, said control stem, and said control knob being removable as a unit from said main valve body in response to removal of said removable fastening means,

(B) an additional water outlet port communicating with said cold and hot water inlets through said first water outlet of said main valve body,

(C) a solenoid valve arranged for opening and closing said additional water outlet port,

(D) infrared sensing means for opening said solenoid valve in response to sensing a user'"'"'s hand in a predetermined location, to discharge water through said additional water outlet port, and

(E) a water discharge pipe including two intake portions communicating with said side water outlet and said additional water outlet port, respectively, and a common discharge outlet commnicating with both said intake portions.

2. A faucet according to claim 1, wherein said retaining means comprises a check ring mounted in aligned slots in said main valve body and said adjusting cylinder means, a collar surrounding said check ring.