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.:
Date of Patent:
Jun. 01, 1976
Filed:
Jul. 28, 1975
Robert G Beacon, Sparta, NJ (US);
Ellcon-National, Inc., Totowa, NJ (US);
Abstract
A compensating air reservoir for changing the braking force of the brakes of a car, such as a railway car intended to transport particulate material, is connected to the air line which supplies air to the brake cylinder and piston assembly of the car. The air reservoir has a movable wall forming a portion of the car wall and directly engageable by said material. The movable wall controls a valve on a wall of the reservoir so that when the car is empty, the valve is open permitting air to flow into the reservoir, thereby reducing the braking force, and so that when the car is loaded, the valve is closed, thereby permitting maximum braking force. The maximum pressure in the reservoir is limited by a limiting valve, and in modified embodiments, the valve which controls the admission of air to the reservoir does not open until the braking air pressure reaches a predetermined level. Two or more reservoirs are used to provide more than two braking force levels.