Title: Mechanical pipe end seal/alignment device

Abstract: A multi-purpose pipe end seal/alignment device is provided for sealing pipe ends against internal or external pressure while protecting the pipe end preparation from damage to facilitate a permanent pipe joining process at a remote location in an adverse environment.

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Inventors: Nanny, Walter C. (Houston, TX, US)

Application Number: 754142
Filing Date: 1976-12-27
Publication_date: 1978-03-28
Assignee: Shell Oil Company (Houston, TX)
Primary Class(es): 405/170 29/281.6, 29/429, 138/93, 405/168.2
Other Classes:
US Patent Ref:

3834169	Sep, 1974	Abbott	61/111.
3890693	Jun, 1975	Eagleton et al.	61/111.
3977201	Aug, 1976	Bittner	61/112.
3978678	Sep, 1976	Duncan et al.	61/112.
4011620	Mar, 1977	Southgate	61/112.

Other Refs:
Primary Examiner: Shapiro, Jacob
Assistant Examiner:
Attorney: