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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9889865 B1

PDFFull Text
Date of Patent:
Feb. 13, 2018

Filed:

Aug. 05, 2014

Brake cylinder device and disc brake device

Applicant:

Nabtesco Corporation, Tokyo, JP;

Inventors:

Yoshio Asano, Kobe, JP;

Hideyuki Oie, Kobe, JP;

Assignee:

NABTESCO CORPORATION, Tokyo, JP;

Attorney:

Pillsbury Winthrop Shaw Pittman, LLP

Primary Examiner:

Christopher Schwartz

Int. Cl.
CPC ...
F16D 65/28 (2006.01); B61H 5/00 (2006.01); F16D 55/224 (2006.01); B61H 13/00 (2006.01); F16D 55/2255 (2006.01); F16D 65/18 (2006.01); F16D 65/40 (2006.01); B60T 17/08 (2006.01); F16D 65/56 (2006.01); F16D 123/00 (2012.01); F16D 125/66 (2012.01); F16D 121/06 (2012.01); F16D 127/06 (2012.01);
U.S. Cl.
CPC ...
B61H 5/00 (2013.01); B60T 17/083 (2013.01); B61H 13/00 (2013.01); B61H 13/005 (2013.01); F16D 55/2245 (2013.01); F16D 55/2255 (2013.01); F16D 65/18 (2013.01); F16D 65/40 (2013.01); F16D 65/56 (2013.01); F16D 2121/06 (2013.01); F16D 2123/00 (2013.01); F16D 2125/66 (2013.01); F16D 2127/06 (2013.01);
Abstract

The present disclosure increases the braking force of a parking spring brake mechanism without enlarging a device and without substantial increase in cost. The subject of the present disclosure is a brake cylinder device provided with a parking spring brake mechanism wherein a first piston moves in a prescribed braking direction. The brake cylinder device is provided with a brake force transmitting section having an inclined surfacethat is inclined so as to press a brake output section in an advancement direction by moving along with the first piston in the braking direction. The inclined surface includes a first inclined surface provided in a distal end portion, and a second inclined surface provided in a proximal end portion and inclined more than the first inclined surface with respect to the advancement direction.

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