LOCKOUT VALVE

• US 20090212250A1
• Filed: 02/23/2009
• Published: 08/27/2009
• Est. Priority Date: 02/21/2008
• Status: Abandoned Application

• Current Assignee: Master Pneumatic-Detroit, Inc.
• Original Assignee: Master Pneumatic-Detroit, Inc.
• Inventors: Kempf, John A., Brice, Lawrence E.
• Application Number:
  US12/390,595
• Publication Number:
  US 20090212250A1
• Time in Patent Office: Days
• US Class Current: 251/326
• CPC Class Codes: F16K 11/0655 with flat slides
• CPC Class Codes: F16K 24/02 the enclosure being itself a valve, tap, or cock

Abstract

A lockout valve operable to control fluid between two components is provided. The lockout valve includes a housing having a flow passage, an intake port, an outtake port, and an exhaust port selectively in communication with the flow passage. The lockout valve further includes a slide slidably mounted to the housing between an open position and a closed position. The slide includes a vent disposed and a through port extending through the slide. When the slide is in the open position, the through port is disposed between the intake port and the outtake port, providing a passage for fluid. When the slide is in the closed position, the vent is fittingly disposed between the intake port and the outtake port so as to prevent fluid from flowing downstream the lockout valve and to allow fluid pressure downstream the lockout valve to escape through the exhaust port.

Claims

1. A lockout valve operable to control fluid between two components, the lockout valve comprising:

a housing including an intake port spaced apart an outtake port, and wherein the housing further includes a flow passage in communication with an exhaust port; and

a slide slidably mounted to the housing, wherein the slide is slidable between an open position and a closed position, the slide including an upstream surface and a downstream surface, the slide further including a vent disposed on the downstream surface, and a through port extending between the downstream surface and the upstream surface, and wherein when the slide is in the open position, the through port is disposed between the intake port and the outtake port so as to provide a passage for fluid, and wherein when the slide is in the closed position, the vent is disposed between the intake port and the outtake port and in communication with the flow passage, wherein the upstream surface prevents fluid from moving downstream the lockout valve, and wherein pressure downstream the lockout valve forces fluid downstream of the lockout valve to escape through the vent to the flow passage and out the exhaust port.

2. The device as set forth in claim 1, wherein the slide further includes a pair of sidewalls, wherein each of the pair of sidewalls is spaced apart from each other, wherein the pair of sidewalls extends between the upstream surface and the downstream surface, and wherein the each of the pair of sidewalls include a sidewall opening, and wherein the vent is in communication with each of the sidewall openings.

3. The device as set forth in claim 2, further including a wall, the wall extending between the inner surfaces of the vent so as to prevent an object from being inserted between the sidewall openings.

4. The device as set forth in claim 2 wherein each of the pair of sidewalls further includes at least one elongated bar extending longitudinally across the sidewall opening so as to prevent objects of a predetermined size from being inserted into the vent.

5. The device as set forth in claim 1 wherein the slide further includes a handle, the handle operable to facilitate the movement of the slide between the closed and open position.

6. The device as set forth in claim 1, further including at least one seal disposed between the slide and one of either the intake or outtake port, wherein the seal is compressed between the slide and one of either the intake or outtake port so as to control the movement of fluid.

7. The device as set forth in claim 1, further including a sensor port disposed on the housing, the sensor port configured to accept a sensor.

8. The device as set forth in claim 1, wherein the exhaust port is configured to receive one of either a muffler or an accumulator.

9. The device as set forth in claim 8, wherein the opening of the exhaust port is the same or larger than the opening of the inlet port.

10. The device as set forth in claim 1, wherein the slide further includes a bleeder hole disposed between the vent and the through port, the bleeder hole extending between the upstream surface and downstream surface of the slide, and wherein when the slide is moveable to an intermediate position where the bleeder hole is disposed between the intake port and outtake port.

11. The device as set forth in claim 10, further including a detent slot, the detent slot extending longitudinally along the downstream surface of the slide, and an override slot extending longitudinally on the upstream surface of the slide, wherein a portion of the detent slot overlaps a portion of the override slot so as to define the bleeder hole.

12. The device as set forth in claim 10, wherein the slide includes a locking mechanism for locking the bleeder hole into the intermediate position, wherein the locking mechanism is disposed in the housing, and includes a biasing member and an ball member, the biasing member urging the ball member against the detent slot so as to place the slide in an intermediate position when moved between the open and closed position.

13. The device as set forth in claim 11, wherein the slide further includes a detent mechanism for overriding the locking mechanism, the detent mechanism including a detent override lever disposed in the housing, wherein a portion of the override lever extends from the housing, the detent override lever having a finger engaging the ball member, wherein actuation of the detent lever urges the finger against the ball member so as to urge the ball member out of the detent slot and free the slide for unrestricted movement between the open and closed position.

14. The device as set forth in claim 1, wherein the housing includes an upstream housing member and a downstream housing member.

15. The device as set forth in claim 1, further including baffles disposed along the inner surface of the housing.

16. The device as set forth in claim 12, wherein the exhaust port is disposed on the downstream housing member.

17. The device as set forth in claim 12, further including a spacer disposed between the upstream housing member and the downstream housing member, the spacer displacing the upstream housing member from the downstream housing member so as to form the exhaust port.

18. The device as set forth in claim 15, further including a diverter disposed on the spacer and spaced apart from the housing, the diverter including a diverting surface for diverting the flow of fluid leaving the exhaust port.