E - Fixed Constructions – 04 – G
Patent
E - Fixed Constructions
04
G
E04G 1/20 (2006.01)
Patent
CA 2064702
2064702 9103612 PCTABS00003 A pump jack pole (62) is comprised of an elongated metal tube (32) of rectangular configuration and a resiliently yieldable elastomeric strip (34) which is secured to one side of the tubing. The tubing (32) is comprised of an aluminum extrusion whereon there is formed a plurality of longitudinally extending closely-spaced parallel protrusions (40). The strip (34) is formed with a plurality of similarly spaced longitudinally extending grooves (50) of complementary configuration to the protrusions (40) which are interdigitated with the grooves (50).
Anderson Carl
Goudreau Gage Dubuc
LandOfFree
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