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:
Sep. 09, 1980
Filed:
Apr. 25, 1979
Glennon L Basler, St. Charles, MO (US);
Richard J Wempe, St. Charles, MO (US);
ACF Industries, Incorporated, New York, NY (US);
Abstract
In accordance with the present invention, a top operated tank car valve assembly includes a rod extending downwardly from the top of the tank and is attached to a valve stem of a lading valve closure located in the bottom of the tank. A valve seat for a valve closure is located in an opening in the bottom outlet mounting flange. A valve guide depends from the valve closure. The valve guide includes a center hub and a plurality of vanes extending radially outwardly therefrom and adapted to engage the valve cage as the valve is moved between open and closed positions. The center hub is hollow and is adapted to receive a fastener to attach the valve guide to the valve closure. The fastener includes a threaded inner end to engage the lower portion of the valve closure. A non-round horizontal plate is welded to the fastener which holds a seal retainer in engagement with a seal and the valve closure. A breakage groove is provided in the fastener below the non-round horizontal plate which aligns with the upper surface of the valve guide. An outlet chamber is attached to the tank mounting flange with shearable fasteners. The breakage groove aligns with the mounting flange and outlet chamber interface. If the outlet chamber is impacted, the outlet chamber fasteners and valve guide fastener will shear along a common plane and the outlet chamber and valve guide will be separated from the outlet. However, the non-round horizontal plate located above the shear plane will maintain the seal retainer and the closure seal in place on the valve seat. Thus lading will be prevented from escaping from the tank during such impacts.