Power tong having cam followers with sliding contact surfaces

Details Power tong having cam followers with sliding contact surfaces Power tong having cam followers with sliding contact surfaces

E - Fixed Constructions

21

B

E21B 19/16 (2006.01) B25B 13/50 (2006.01)

Patent

CA 2592683

In a pivoting-jaw power tong having a rotary gear with substantially linear camming surfaces and pivoting jaw members with cam followers for engagement with the camming surfaces upon rotation of the rotary gear relative to the jaw members, each cam follower has at least one contact surface configured for sliding engagement with a primary camming surface. The provision of sliding contact surfaces reduces contact pressures between the cam followers and the camming surfaces, thus reducing wear. The cam followers may be formed integrally with the jaw members, but preferably will be rollers which can swivel relative to their respective jaw members to facilitate substantially uniform sliding contact between the cam follower contact surfaces and the camming surfaces of the rotary gear. In alternative embodiments, the camming surfaces may have a slight concave curvature, with the cam followers' contact surfaces being correspondingly convexly curved.

Affiliated with

Also associated with

Rating

Power tong having cam followers with sliding contact surfaces does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Power tong having cam followers with sliding contact surfaces, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power tong having cam followers with sliding contact surfaces will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1603428