E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/50
E21B 33/06 (2006.01)
Patent
CA 1203159
Abstract of the Disclosure A ram-type blowout preventer having a body with a central bore extending therethrough and with guideways extending outward from the central bore, a ram in each of the guideways and having a recess on its front face, a front packer posi- tioned in said ram recess and including a backing portion and an insert portion, the insert portion being tightly inter- engaged with said backing portion.
436216
Cameron Iron Works Inc.
Smart & Biggar
LandOfFree
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