Bi-stable quick-release valve

Patent metadata

Field	Value
Publication number	US-11499646-B2
Application number	US-202117319763-A
Country	US
Kind code	B2
Filing date	May 13, 2021
Priority date	May 13, 2020
Publication date	Nov 15, 2022
Grant date	Nov 15, 2022

Abstract

A valve for applying an emergency brake of a rail vehicle includes a valve housing, an actuation member to be activated by a user, an actuation rod connecting the actuation member with a valve head, wherein the valve head is adapted to abut on a valve seat, a guidance for guiding the actuation rod being provided within the valve housing, and a first spring adapted to push the valve head against the valve seat, wherein the actuation rod includes a first groove and a second groove, and wherein a first following member is provided between the actuation rod and the guidance, being adapted to stably rest in the first groove or the second groove.

First claim

The invention claimed is:

1. A valve for applying an emergency brake of a rail vehicle, the valve comprising:
a valve housing;
an actuation member to be actuated by a user;
an actuation rod, connecting the actuation member with a valve head, wherein the valve head is configured to abut on a valve seat;
a guidance for guiding the actuation rod being provided within the valve housing,
a first spring configured to push the valve head against the valve seat, wherein the actuation rod includes a first groove and a second groove; and
a first following member provided between the actuation rod and the guidance, and being configured to stably rest in the first groove or the second groove,
wherein a second following member is provided between the actuation rod and the guidance.

2. The valve of claim 1 , wherein the first groove and/or the second groove are radial grooves and extend around the circumference of the actuation rod.

3. The valve of claim 1 , wherein a ridge is provided between the first groove and the second groove.

4. The valve of claim 1 , wherein the first groove and/or the second groove have a semi-circular or a semi-elliptical shape.

5. The valve of claim 1 , wherein the first following member and/or the second following member have a spherical or ellipsoidal shape.

6. The valve of claim 1 , wherein the first following member is configured to stably rest in the first groove or the second groove, and/or the first groove is configured that both the first following member and second following member to stably rest in it.

7. The valve of claim 1 , wherein the first following member is pressed against the actuation rod by a second spring which rests in the valve housing, and/or wherein the second following member is pressed against the actuation rod by a third spring which rests in the valve housing.

8. The valve of claim 7 , wherein there is a connecting element between the third spring and the second following member, which is configured to actuate one or more electrical switch, wherein the connecting element is accommodated in a recess provided within the valve housing.

9. The valve of claim 1 , wherein the actuation member has a hole which is configured to receive the upper part of the actuation rod, wherein a fourth spring is arranged between the actuation member and the upper part of the actuation rod.

10. The valve of claim 9 , wherein the resultant force between the actuation rod and the first following member is higher than the force needed to fully compress the fourth spring.

11. The valve of claim 1 , wherein the diameter of the guidance of a valve head is smaller than the diameter of the sealing edge of the valve seat.

12. The valve of claim 1 , wherein the valve is configured to open and/or close the channel between a brake pipe pressure line and the atmosphere.

Assignees

• Knorr Bremse Systeme

Inventors

• Kozma Marton
• Ibos Igor

Classifications

• B60T15/52

  for quick release of brakes, e.g. for influencing counter- pressure in triple valve or recirculating air from reservoir or brake cylinder to brake pipe · CPC title

• F16K37/0041

  for measuring valve parameters (F16K37/0033 takes precedence) · CPC title

• F16K1/32

  Details (details of more general applicability F16K25/00 - F16K51/00) · CPC title

• F16K15/025

  the valve being loaded by a spring (F16K15/03 - F16K15/12 take precedence) · CPC title

• B60T15/04

  Driver's valves · CPC title