Hydraulic blowout preventer lifter

Implements or apparatus for applying pushing or pulling force – Apparatus for hauling or hoisting load – including driven... – With rotatable – cable contacting – pulley wheel element...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

254385, B66F 100

Patent

active

058165657

ABSTRACT:
A lifting apparatus for lifting a heavy object. The lifting apparatus including a frame assembly having a pair of side beams spaced parallel to one another. A sliding sheave assembly is mounted to the frame assembly. The sliding sheave assembly is positioned between the pair of side beams. The sliding sheave assembly has a first shaft with a plurality of first sheaves mounted thereto and a second shaft with a plurality of second sheaves mounted thereto. The first and second shafts are separated by a distance which can be varied. A cylinder has a first end connected to the frame assembly and a rod end attached to the sliding sheave assembly. The cylinder rod end is capable of moving longitudinally relative to the first end to thereby alter the distance between the first and second shafts. A cable having first and second ends attached to the frame assembly is reeved between the pluralities of first and second sheaves. A portion of the cable is reeved to a snatch block having a lifting hook for attaching to the heavy object. The heavy object is lifted by extending the rod end of the cylinder to increase the distance between the first and second shafts.

REFERENCES:
patent: 172650 (1876-01-01), Perkins
patent: 181113 (1876-08-01), Stebins
patent: 189424 (1877-04-01), Brewer
patent: 192116 (1877-06-01), Fletcher
patent: 267489 (1882-11-01), Butz
patent: 1188760 (1916-06-01), Hagenbucher
patent: 2984455 (1961-05-01), Fischer
patent: 3368619 (1968-02-01), Postlewaite
patent: 3456745 (1969-07-01), Peri
patent: 3494491 (1970-02-01), Sumida
patent: 3517737 (1970-06-01), Petersen
patent: 3891038 (1975-06-01), Delestrade et al.
patent: 4125164 (1978-11-01), Terry
patent: 4236695 (1980-12-01), Morrison
patent: 4305467 (1981-12-01), Villines
patent: 4455118 (1984-06-01), Schart
patent: 4516478 (1985-05-01), Connelly
patent: 4651652 (1987-03-01), Wyckoff
patent: 4801126 (1989-01-01), Rosman
patent: 4917566 (1990-04-01), Chauvin
patent: 5467833 (1995-11-01), Crain

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

Hydraulic blowout preventer lifter does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

     

Profile ID: LFUS-PAI-O-70511

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