GOGGLE VALVE WITH LIMIT SWITCH

• US 3,695,300 A
• Filed: 06/01/1971
• Issued: 10/03/1972
• Est. Priority Date: 06/01/1971
• Status: Expired due to Term

• Current Assignee: Norman F. Bradel
• Original Assignee: Norman F. Bradel
• Inventors: Bradel, Norman F.
• Primary Examiner(s): Wayner, William E.
• Application Number:
  US05/148,832
• Time in Patent Office: 490 Days
• Field of Search: 138/94.3 251/159,175,157 200/47
• US Class Current: 138/94.3
• CPC Class Codes: F16K 3/04 with pivoted closure members

Abstract

In a goggle type valve having a valve plate movable transversely of the passage through the valve between a fully open and a fully closed position with the valve body having a fixed end section at each end and an intermediate section axially movable into and out of valve plate-clamping position, there is provided a limit switch arrangement to assure proper sequencing of the axial travel of the movable member and the operation of the valve plate from one position to the other, including means for effectively amplifying the slight axial movement of the intermediate section to the desired extent for operation of the limit switches.

Claims

1. For use in a valve having a first fixed end section and a second fixed end section and an intermediate section movable axially relative to both end sections, all three sections being axially aligned, and where there is a valve plate movable in a transverse plane between said movable intermediate section and said second fixed section, said movable section having means for effecting movement thereof in a direction to clamp said valve plate between one end of the movable section and the confronting end of said second fixed end section and for retracting it toward said first fixed section to release the valve plate and withdraw the movable intermediate section from the plane of movement of the valve plate, tHe invention comprising limit switch-actuating means responsive to relative motion between the first fixed end section and the movable intermediate section wherein:

a. there is a limit switch-supporting means with a limit switch thereon fixed on one of said two sections last recited, b. there is a lever pivotally mounted on one of said two sections last named, the lever having a free end movable in an arc into and out of operating engagement with said limit switch, c. there is a link connecting the other of said two lastmentioned sections with said lever, d. the distance between the pivotal mounting of the lever and its free end being greater than the distance between the pivotal mounting of said lever and the link whereby limited movement of the movable section relative to the first end section is amplified in the arc through which the free end of said lever travels as a resujt of such relative movement.

2. The invention defined in claim 1 in which there is a second limit switch on said limit switch-supporting means spaced from the first and positioned to be operated by the free end of said lever when it swings a predetermined distance in a direction opposite that in which it swings to operate said first-named limit switch.

3. The invention defined in claim 1 in which the pivotal mounting of the lever is intermediate the ends of the lever and said link is connected to the lever at one side of the pivotal mounting and said free end is at the other side of the pivotal mounting.

4. The invention defined in claim 1 in which the limit switch-supporting means and the pivotal mounting for the lever are on the same one of said two sections.

5. The invention defined in claim 1 in which both the limit switch-supporting means and the pivotal mounting for the lever are on the said first fixed section and the link is attached to the movable intermediate section.

6. The invention as defined in claim 1 wherein the lever, switch and link arrangement therein defined is duplicated at a plurality of arcuately spaced locations around the valve.

7. The invention as defined i claim 6 in which there is one limit switch on the limit switch-supporting means at each location, which limit switch is arranged to be operated by said lever when the intermediate section is retracted from valve plate clamping position and at least one location there is a second limit switch on the limit switch-supporting means adjacent to but spaced from the first arranged to be operated by said lever when the intermediate section is extended into valve plate-clamping position.

8. The invention defined in claim 7 wherein fluid pressure ram units are provided to effect motion of the intermediate valve section away from valve plate clamping position and there are spring means for resiliently urging said section into valve plate-clamping position.