Improved cam follower for power tongs and other uses

Details Improved cam follower for power tongs and other uses Improved cam follower for power tongs and other uses

E - Fixed Constructions

21

B

E21B 19/16 (2006.01)

Patent

CA 2484497

A power tong or back-up tong has a jaw assembly (6) that is advanced into engagement with a pipe (13) through a cam follower that contacts the camming (10) surface on the inside circumference of a ring gear (9), the cam follower being in the form of a series of roller elements (14) arranged as a circulating bearing. In a preferred form, the roller elements are cylindrical roller bearings and the jaw assembly is mounted for sliding advancement towards the pipe to be engaged. In an alternate variant the cam follower includes an indexing guide (30) that maintains the cylindrical roller bearings in proper alignment.

L'invention porte sur une pince mécanique ou pince de tenue qui comprend un ensemble mâchoire que l'on pousse de sorte qu'il vienne en contact avec un tuyau par l'intermédiaire d'un suiveur de came qui vient en contact avec la surface de came sur la circonférence interne d'une couronne, le suiveur de came se présentant sous la forme d'une série de roues agencées comme un palier de circulation. Selon une forme préférée, les roues sont des appuis cylindriques et l'ensemble mâchoire est monté de façon à avancer par coulissement vers le tuyau contre lequel il doit venir en contact. En variante, le suiveur de came comprend un guide d'indexage qui maintient les appuis cylindriques dans un alignement correct.

Affiliated with

Also associated with

Rating

Improved cam follower for power tongs and other uses does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Improved cam follower for power tongs and other uses, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Improved cam follower for power tongs and other uses will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1583158