Centrifugal backspin retarder and drivehead for use therewith

Wells – With below and above ground modification – Eduction pump or plunger in well

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

166 781, 188184, E21B 4300

Patent

active

060794895

ABSTRACT:
A backspin retarder for a shaft comprises a brake mechanism including a stationary brake member and opposed brake members rotatable with the shaft and movable between braking position in which the movable brake members engage the stationary brake member and a non-braking position in which the movable brake members are removed from the stationary brake member and a brake control mechanism responsive to the direction of rotation of the shaft for disabling the brake mechanism when the shaft rotates in a forward direction and for enabling the brake mechanism when the shaft rotates in a reverse direction.

REFERENCES:
patent: 3576242 (1971-04-01), Mumma
patent: 4216848 (1980-08-01), Shimodaira
patent: 4275609 (1981-06-01), DeLaney
patent: 4388837 (1983-06-01), Bender
patent: 4493613 (1985-01-01), Sommer
patent: 4531617 (1985-07-01), Martin et al.
patent: 4601640 (1986-07-01), Sommer
patent: 4797075 (1989-01-01), Edwards et al.
patent: 4993276 (1991-02-01), Edwards
patent: 5358036 (1994-10-01), Mills
patent: 5370179 (1994-12-01), Mills
patent: 5551510 (1996-09-01), Mills
patent: 5749416 (1998-05-01), Belcher

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Centrifugal backspin retarder and drivehead for use therewith does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Centrifugal backspin retarder and drivehead for use therewith, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Centrifugal backspin retarder and drivehead for use therewith will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1775997

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.