E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/56
E21B 37/10 (2006.01)
Patent
CA 1143283
SWAB CUP HAVING AN INTERNAL REINFORCING MEMBER Abstract of the Disclosure A well swab cup has an annular bushing for sup- porting a plurality of longitudinally extending wire rein- forcing members within an elastomeric cup-like body. The reinforcing members are supported by a base cup around the lower portion of the bushing and extending upward within the body. An internal elongated hollow reinforcing member extends upward from the base cup within the pattern of the wire reinforcing members and within the elastomeric, cup- like body.
366709
Dresser Industries Inc.
Macrae & Co.
LandOfFree
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