E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 17/02 (2006.01) E21B 3/04 (2006.01) E21B 7/24 (2006.01)
Patent
CA 2133677
-10- A rotary-vibratory drill coupling has a first component with a plurality of spaced-apart members. Each member has a pair of opposed, spaced-apart faces defining a slot therebetween A second component has a plurality of angularly spaced-apart blade-like projections extending radially thereon. Each of the projections is slidably received between one pair of the opposed, spaced-apart faces on the first component. Preferably there are anti-friction linings between the projections and the faces.
-10- Cette invention concerne un accouplement de perforatrice rotative vibrante dont le premier élément est formé d'une pluralité de pièces espacées. Chacune des pièces comporte une paire de faces opposées définissant entre elles une rainure. Un deuxième élément comporte une pluralité de nervures radiales espacées angulairement. Les nervures se logent dans les rainures délimitées par les paires de faces opposées des pièces du premier élément. De préférence, une garniture anti-friction est placée entre les faces contiguës des rainures et nervures.
Cameron Norman M.
Roussy Raymond Joseph
LandOfFree
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