Implements or apparatus for applying pushing or pulling force – Apparatus for hauling or hoisting load – including driven... – Device includes rotatably driven – cable contacting drum
Reexamination Certificate
2008-06-18
2010-10-26
Langdon, Evan H (Department: 3654)
Implements or apparatus for applying pushing or pulling force
Apparatus for hauling or hoisting load, including driven...
Device includes rotatably driven, cable contacting drum
C254S342000, C254S362000
Reexamination Certificate
active
07819389
ABSTRACT:
An engagement chain type hoisting and lowering device is disclosed, having a hoisting and lowering table attached to the upper end of two or more pairs of hoisting and lowering driving engagement chains. A driving motor drives two pairs of hoisting and lowering sprockets which, in turn, raise or lower two pairs of hoisting and lowering driving engagement chains. By arranging two pairs of hoisting and lowering driving engagement chains on two opposed sides of the hoisting and lowering table, buckling of the hoisting and lowering driving engagement chains is suppressed, resulting in stable hoisting and lowering operations without slippage of articles on the hoisting and lowering table, and chain endurance is improved. The device is designed so that the lowest position of the hoisting and lowering table can be lower than the height of the peripherally located driving motor, for ease and safety of operation and maintenance.
REFERENCES:
patent: 4867277 (1989-09-01), Sloan
patent: 5339749 (1994-08-01), Hirose
patent: 6286812 (2001-09-01), Cherry
patent: 6516478 (2003-02-01), Cook et al.
patent: 6742768 (2004-06-01), Alba
patent: 2003/0075657 (2003-04-01), Joubert
patent: 2003/0168646 (2003-09-01), Lopez Alba
patent: 60-45958 (1985-04-01), None
patent: 07-223800 (1995-08-01), None
patent: 10-175796 (1998-06-01), None
patent: 11-049487 (1999-02-01), None
patent: 11-193199 (1999-07-01), None
patent: 11-278797 (1999-10-01), None
patent: 2003-004104 (2003-01-01), None
patent: 2005-083429 (2005-03-01), None
Peripheral. (n.d.). The American Heritage® Dictionary of the English Language, Fourth Edition. Retrieved Oct. 20, 2009, from Dictionary.com website: http://dictionary.reference.com/browse/peripheral.
Saji Tomoyuki
Shibata Naoto
Takeuchi Yoshifumi
Wada Toru
Langdon Evan H
Oberhardt William P.
Tsubakimoto Chain Co.
LandOfFree
Hoisting and lowering device having engagement chains does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hoisting and lowering device having engagement chains, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hoisting and lowering device having engagement chains will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4192765