Composite brake cylinder for a rail vehicle

Patent metadata

Field	Value
Publication number	US-9499182-B2
Application number	US-201514603835-A
Country	US
Kind code	B2
Filing date	Jan 23, 2015
Priority date	Jan 23, 2015
Publication date	Nov 22, 2016
Grant date	Nov 22, 2016

Abstract

A brake cylinder having a filament wound composite pressure cylinder and a composite plastic non-pressure head. The pressure cylinder and non-pressure head are secured together by a pair of mating flanges and a V-shaped band securely attached over the flanges. The band has a gap that is easily adjustable to position the gap at the lowest point and be in alignment with a series of radially extending grooves in the flange of the non-pressure head, thereby ensuring proper drainage. The non-pressure head may include an integrally formed opening with a bearing surface for a piston rod, a seat for a piston return spring, a scraper for a piston rod, and a series of internal ribs that provide for structural support and act as stop against a piston overtravel.

First claim

What is claimed is:

1. A brake cylinder comprising:
a pressure cylinder having an opening and a first flange extending outwardly from the opening;
a non-pressure head having a second flange and positioned in abutment to the first flange of the pressure cylinder and including a plurality of radial grooves formed therein that are spaced around the entire second flange; and
a band extending securely around the first and second flanges and having first and second ends that define a gap in the band that is in alignment with at least one of the plurality of radial grooves in the second flange of the non-pressure head.

2. The brake cylinder of claim 1 , wherein the non-pressure head further comprises an opening having a bearing surface for a piston rod.

3. The brake cylinder of claim 2 , wherein the non-pressure head further comprises a seat for a piston return spring.

4. The brake cylinder of claim 3 , wherein the non-pressure head further comprises a scraper for the piston rod.

5. The brake cylinder of claim 4 , wherein an interior surface of the non-pressure head includes a series of ribs.

6. The brake cylinder of claim 5 , further comprising a piston positioned in the pressure cylinder and a hollow rod coupled to the piston that extends from the piston through the opening of the non-pressure head to be in contact with the bearing surface and the scraper of the non-pressure head.

7. The brake cylinder of claim 6 , wherein the piston return spring engages the piston of the pressure cylinder and the seat of the non-pressure head.

8. The brake cylinder of claim 1 , further comprising a series of mounting feet attached to the pressure cylinder.

9. The brake cylinder of claim 8 , wherein the mounting feet are attached by epoxy coated filaments to the pressure cylinder.

10. The brake cylinder of claim 8 , wherein the mounting feet are positioned in a set of grooves formed in the outer surface of the pressure cylinder and fastened to the pressure cylinder by straps.

11. The brake cylinder of claim 8 , wherein a set of grooves in the mounting feet are positioned over a corresponding set of diametrical bosses formed on the outer surface of the pressure cylinder.

12. The brake cylinder of claim 1 , wherein the non-pressure head comprises plastic composite.

13. The brake cylinder of claim 1 , wherein the pressure cylinder comprises filament wound composite.

Assignees

• New York Air Brake Llc

Inventors

• Wright Eric C

Classifications

• B60T17/081

  Single service brake actuators · CPC title

• F16D2125/08

  Seals, e.g. piston seals · CPC title

• B61H13/20 Primary

  Transmitting mechanisms · CPC title

• B60T17/088

  Mounting arrangements · CPC title

• B61H13/34 Primary

  Details · CPC title