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 8141880 B1

PDF
Full Text
Expired
Date of Patent:
Mar. 27, 2012

Filed:

Nov. 30, 2007
Applicants:

Shigeo Ando, Chiba, JP;

Masao Ando, Chiba, JP;

Toyoroku Ando, Chiba, JP;

Inventors:

Shigeo Ando, Chiba, JP;

Masao Ando, Chiba, JP;

Toyoroku Ando, Chiba, JP;

Assignee:

Other;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 33/128 (2006.01);
U.S. Cl.
CPC ...
Abstract

There is provided a high pressure sealing apparatus including: a top adapter including a packing receiving recess having an inverted V-shaped section; a bottom adapter including a packing supporting wall having an inverted V-shaped section; packing members each having an inverted V-shaped section, and interposed between the top adapter and the bottom adapter; and backup rings each having an inverted V-shaped section, and alternately overlapped with the packing members. The packing members are made of hard synthetic resin. A deformation allowing gap is formed on at least two facing walls of a top wall or a bottom wall of the packing member, and a bottom wall of the top adapter, a top wall and a bottom wall of the backup ring, or a top wall of the bottom adapter to be closed owing to compaction force in an axial direction X.


Find Patent Forward Citations

Ando, Shigeo. (2012). High pressure sealing apparatus (U.S. Patent No. 8141880). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8141880

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