Pulley

Ships – Sail or control means therefor – Having means to tension or stretch sail

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C474S067000

Reexamination Certificate

active

11233654

ABSTRACT:
A pulley comprising a first pulley wheel and a second pulley wheel and a ratchet acting between the two pulley wheels. When substantially equal force is applied to each pulley wheel in use on a rope tail side causing the pulley wheels to rotate, a low gear ratio is achieved through a rope, chain or the like acting on a load through a block. When one pulley wheel is prevented from rotating and a force is applied to the other pulley wheel in use on a rope tail side causing it to rotate, then a higher gear ratio is achieved through a rope or chain or the like acting on a load through a block. When force is applied to the first wheel on a rope tail side and the second pulley wheel is allowed to rotate, then a still higher ratio is achieved in use through a rope, chain or the like acting on a load through a block. In another embodiment, the pulley comprises a first pulley wheel, a second pulley wheel and means to prevent relative rotation of the pulley wheels in one direction, the pulley wheels being able to rotate relative to each other in the other direction. In another embodiment, the pulley comprises a first pulley wheel, a second pulley wheel and means acting between the pulley wheels such that, a force acting to rotate the first pulley wheel in a first direction imparts a corresponding force to rotate the second pulley wheel in a second, opposite direction.

REFERENCES:
patent: 4440354 (1984-04-01), Kobayashi et al.

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

Pulley does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pulley, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pulley will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3937852

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