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:
Dec. 19, 2017
Filed:
Feb. 22, 2016
Isolation Equipment Services Inc., Red Deer, CA;
Boris (Bruce) P. Cherewyk, Calgary, CA;
Isolation Equipment Services, Inc., Calgary, CA;
Abstract
A bonnet for a gate valve is provided or retrofitted for minimizing sand-packing and minimizing interruption of operations. An annular recess is formed about the stem, the resulting profile and dimensional modification effective to minimize packing effects when stroking the gate to the retracted position. In an embodiment, the annular recess is one or more of a cylindrical or conical recess. In another embodiment, wherein a retracted gate stops against the bonnet, one or both of the bonnet and gate interface is fit with beveled surfaces for receiving sand that accumulated on the stop.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile