Handling: hand and hoist-line implements – Hook – hoistline – or grab type – Cable and hook tackle
Patent
1986-02-28
1988-02-09
Cherry, Johnny D.
Handling: hand and hoist-line implements
Hook, hoistline, or grab type
Cable and hook tackle
403 78, 403165, B66C 134, F16D 112
Patent
active
047238046
ABSTRACT:
A rotatable coupling is provided for connecting the haulback line ferrule of a cable yarding system to cable chokers. The coupling includes a top member and a bottom member rotatably joined along a pair of opposing flat faces which abut each other and allow rotation about only one axis. A slot in the top member includes a wide bottom cavity and a narrow top cavity which meet to form an annular shoulder against which a top face of the ferrule seats. A stop formed by the sidewall of the top member obstructs radial movement of the ferrule out of the bottom cavity when the top face of the ferrule abuts the shoulder. A lock bolt selectively supports the ferrule against the shoulder. A log bundle carried by cable chokers rotates freely with the bottom member while the top member remains stationary. The coupling thereby prevents torsional forces from being introduced into the cable by rotation of the log bundle.
REFERENCES:
patent: 1454587 (1923-05-01), Gunn
patent: 1464161 (1923-08-01), Wirkkala
patent: 1507960 (1924-09-01), Heinzinger
patent: 1666272 (1928-04-01), Spiering
patent: 1786081 (1930-12-01), Nourse
patent: 1806469 (1931-05-01), Koons
patent: 2759234 (1956-08-01), Brawand
patent: 2803486 (1957-08-01), Larson et al.
patent: 2811378 (1957-10-01), Kalista
patent: 2815976 (1957-12-01), Hammit
patent: 2955855 (1960-10-01), Jobbins
patent: 3544142 (1970-12-01), Moss
patent: 4185863 (1980-01-01), Larson et al.
patent: 4600331 (1986-07-01), Gray
LandOfFree
Lubricated rotatable log coupling for haulback line and choker does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Lubricated rotatable log coupling for haulback line and choker, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lubricated rotatable log coupling for haulback line and choker will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1281169