Ball cock for railway vehicle

• US 6,298,878 B1
• Filed: 04/19/2000
• Issued: 10/09/2001
• Est. Priority Date: 03/31/1997
• Status: Expired due to Term

• Current Assignee: Westinghouse Air Brake Technologies Corporation
• Original Assignee: Westinghouse Air Brake Technologies Corporation
• Inventors: Akamatsu, Osamu, Suetaka, Yoshio, Morita, Mitsumasa, Asano, Yoshio
• Primary Examiner(s): Rivell, John
• Assistant Examiner(s): SCHOENFELD, MEREDITH HOPE
• Application Number:
  US09/553,443
• Time in Patent Office: 538 Days
• Field of Search: 137/625.21, 137/625.22, 251/315, 181/230
• US Class Current: 137/625.21
• CPC Class Codes: F16K 11/0876 one connecting conduit having the same axis as the spindle
• CPC Class Codes: F16K 24/02 the enclosure being itself a valve, tap, or cock
• CPC Class Codes: F16K 5/0605 with particular plug arrangements, e.g. particular shape or built-in means
• CPC Class Codes: Y10T 137/86638 Rotary valve

Abstract

The present invention provides a ball cock for a railway vehicle which comprises a main body possessing a primary-side opening and a secondary-side opening which face one another and an air exhaust aperture which is formed between these openings. Such ball cock further includes a ball-shaped valve body which is rotatably provided inside such main body and in which there is formed a communication aperture which connects the primary side opening and the secondary-side opening and a side aperture which, consequent to its rotation, connects the air exhaust aperture and either the primary-side or secondary-side opening. There is formed in the main body'"'"'s air exhaust aperture a pipe connection to which is be connected a restrictor. In another embodiment a extension pipe is connected to such pipe connection in such air exhaust aperture. Such pipe extension forms a bend portion which causes its opening surface to be positioned lower than a generally horizontal direction when, in accordance with the state in which the main body is fitted to a railway vehicle, its air exhaust aperture is positioned upwardly from such horizontal direction.

Claims

1. A ball cock valve for a railway vehicle, said ball cock valve comprises:

(a) a main body portion possessing a primary-side opening and a secondary-side opening which face one another and an air exhaust aperture formed between said primary-side opening and said secondary-side opening, said air exhaust aperture being threaded;

(b) a ball-shaped valve body rotatably disposed inside a cavity formed in said main body portion, said ball-shaped valve body having a communication aperture formed therein which connects said primary-side opening and said secondary-side opening and a side aperture which, consequent to its rotation, connects said air exhaust aperture and one of said primary-side opening and said secondary-side opening; and

(c) an extension pipe having a threaded first end connected at said first end thereof to said air exhaust aperture, said extension pipe having a restrictor means connected to a second end thereof.

2. A ball cock valve for a railway vehicle, according to claim 1, wherein said extension pipe is selected from a group consisting of metal, plastic and hard rubber.

3. A ball cock valve for a railway vehicle, according to claim 2, wherein said extension pipe is metal.

4. A ball cock valve for a railway vehicle, according to claim 3, wherein said extension pipe is substantially L-shaped when said air exhaust aperture is positioned in a generally horizontal direction.

5. A ball cock valve for a railway vehicle, according to claim 3, wherein said extension pipe is generally U-shaped when said air exhaust aperture is positioned in a generally vertical direction at an upper surface of said main body portion.

6. A ball cock valve for a railway vehicle, according to claim 1, wherein said extension pipe is substantially L-shaped when said air exhaust aperture is positioned in a generally horizontal direction.

7. A ball cock valve for a railway vehicle, according to claim 1, wherein said extension pipe is generally U-shaped when said air exhaust aperture is positioned in a generally vertical direction at an upper surface of said main body portion.

8. A ball cock valve for a railway vehicle, according to claim 1, wherein said extension pipe is substantially L-shaped when said air exhaust aperture is positioned in a generally horizontal direction.

9. A ball cock valve for a railway vehicle, according to claim 1, wherein said extension pipe is generally U-shaped when said air exhaust aperture is positioned in a generally vertical direction at an upper surface of said main body portion.

10. A ball cock valve for a railway vehicle, according to claim 1, wherein said restrictor means is threadably connected to said second end of said extension pipe.