Invention Grant
- Patent Title: Multi-layer backup ring
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Application No.: US16367341Application Date: 2019-03-28
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Publication No.: US10907437B2Publication Date: 2021-02-02
- Inventor: Guijun Deng , John K. Wakefield , Christopher Cook , Frank J. Maenza
- Applicant: Guijun Deng , John K. Wakefield , Christopher Cook , Frank J. Maenza
- Applicant Address: US TX The Woodlands; US TX Cypress; US TX Houston; US TX Houston
- Assignee: Guijun Deng,John K. Wakefield,Christopher Cook,Frank J. Maenza
- Current Assignee: Guijun Deng,John K. Wakefield,Christopher Cook,Frank J. Maenza
- Current Assignee Address: US TX The Woodlands; US TX Cypress; US TX Houston; US TX Houston
- Agency: Cantor Colburn LLP
- Main IPC: E21B33/12
- IPC: E21B33/12 ; E21B23/06 ; E21B33/128 ; E21B33/129
Abstract:
A backup including a radially inwardly disposed circumferentially continuous ring; a radially outwardly disposed circumferentially discontinuous ring, the circumferentially discontinuous ring comprising a plurality of segments arranged to overlap adjacent ones thereof about a circumference of the circumferentially discontinuous ring.
Public/Granted literature
- US20200308920A1 BACKUP Public/Granted day:2020-10-01
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