SANITARY VALVE

• US 3,865,134 A
• Filed: 04/23/1973
• Issued: 02/11/1975
• Est. Priority Date: 04/23/1973
• Status: Expired due to Term

• Current Assignee: Donald E. Holcomb
• Original Assignee: Donald E. Holcomb
• Inventors: Holcomb, Donald E.
• Primary Examiner(s): Cohan, Alan
• Assistant Examiner(s): Gerard, Richard
• Application Number:
  US05/353,770
• Time in Patent Office: 659 Days
• Field of Search: 251/4,62,10,297 137/594 417/474-477
• US Class Current: 137/594
• CPC Class Codes: E03D 5/012 combined with movable closure elements in the bowl outlet bowls with closure elements between bottom or outlet and outlet pipe E03D11/10
• CPC Class Codes: F16K 11/027 the fluid flowing through a constrictable tubular diaphragm
• CPC Class Codes: F16K 7/065 Cam clamps
• CPC Class Codes: Y10T 137/87153 Plural noncommunicating flow paths

Abstract

A sanitary control valve, here constituting two valves sharing a common housing, includes a tube that is selectively radially compressed between a reaction surface on the housing and a movable cam surface disposed therein. The valve includes drag means which frictionally engage the cam, a series of teeth or serrations carried on one of the cam and housing for cooperation with means on the other of said cam and housing to provide discrete incremental positions of the cam. The knob has a pointer portion which overhangs a series of position indicia on the housing.

Claims

1. A sanitary control valve assembly comprising:

a. a housing having a pair of internal spaced reaction surfaces directed in the same direction;

b. a pair of radially resilient tubes each arranged in a U-shape and respectively arranged about said reaction surfaces, the one U-shape being disposed about the other U-shape; and

c. a pair of manually rotatable cams carried by said housing, and each having a camming surface respectively coactive with one of said reaction surface for individually collapsing said tubes by a selected amount.

2. A valve assembly according to claim 1, comprising;

guide means in said housing defining a pair of separate channel-like passages within which said tubes are respectively radially constrained, a portion of said guide means having oppositely directed surfaces respectively defining part of said separate passages.

3. A valve assembly according to claim 2 in which at least one of said cams has a radially extending stop engageable with abutment surfaces on oppositely disposed portions of said tube guide means to limit cam movement.

4. A valve assembly according to claim 1 which includes at least one series of teeth disposed within said housing and carried by one of said housing and one cam and engaged by means disposed within said housing and coactive with said teeth, and said means being carried by the other of said housing and said one cam, to define incremental positions for the associated cam.

5. A valve assembly according to claim 4 which includes a spring acting to urge the associated cam axially and thereby urge said coactive means into firm engagement with said teeth.

6. A valve assembly according to claim 1 including at least one resilient blade carried by and within said housing and being loaded against said one cam at its periphery.