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:
Jan. 12, 1988
Filed:
Mar. 31, 1986
C P Lanmon, II, Houston, TX (US);
Hydrolex, Inc., Longview, TX (US);
Abstract
An auxiliary well pressure packoff assembly for wireline control valves is positionable within the downstream passage of a wireline valve body without requiring cutting of the wireline and receives the wireline in surrounded, sealed relation. A retainer closure positively retains the packing assembly within the valve body passage. An externally controllable mechanism is provided to displace resilient sealing material of the packing assembly to enhance the sealing relationship thereof with the wireline and valve body passage, thus providing an auxiliary seal to protect workers from hazards in the event well pressure should leak past the wireline control valve mechanism. The packoff assembly also clamps the cable to prevent it from moving and vents any leaked well pressure to a safe location. An automatic pressure activated self-energizing feature is provided which increases sealing capability of the system in proportion to increase in well pressure.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile