Implements or apparatus for applying pushing or pulling force – Apparatus for hauling or hoisting load – including driven... – Device includes rotatably driven – cable contacting drum
Patent
1992-03-18
1994-02-08
Crowder, Clifford D.
Implements or apparatus for applying pushing or pulling force
Apparatus for hauling or hoisting load, including driven...
Device includes rotatably driven, cable contacting drum
254342, 254362, 74412TA, 318434, B66D 158, B66D 124, B66D 326, F16H 108
Patent
active
052843254
ABSTRACT:
An electric hoist comprising an electric motor and a sheave driven by the electric motor via a reduction gear. The reduction gear comprises a pair of helical gears meshing with each other. One of the helical gears is axially movably arranged on a shaft and is moved in the axial direction thereof when there is a load on the load chain supported by the sheave, and when the axial movement of the movable helical gear is detected by a sensor, the speed of rotation of the electric motor is automatically changed from a higher speed to a lower speed.
REFERENCES:
patent: 2300343 (1942-10-01), Clay
patent: 2836085 (1958-05-01), Snyder
patent: 2908853 (1959-10-01), Laky et al.
patent: 3038576 (1962-06-01), Simpson
patent: 3285573 (1966-11-01), Hanawa et al.
patent: 3339426 (1967-09-01), Borggrafe
patent: 3564372 (1971-02-01), Vogelsberg et al.
patent: 3675751 (1972-07-01), Fortner
patent: 3784165 (1974-01-01), Pruitt
patent: 3887855 (1975-06-01), Klimo
patent: 4103873 (1978-08-01), Sato et al.
patent: 4282776 (1981-08-01), Eller
patent: 4428249 (1984-01-01), Henk
patent: 4555093 (1985-11-01), Plummer
patent: 4636962 (1987-01-01), Broyden et al.
patent: 4974814 (1990-12-01), Cundy
Yan-Wen Huang, "Automatic Control", pp. 80-85 Wen-Jing Book Co. Ltd. Feb. 10, 1991).
Mochizuki Masahiko
Sasaki Masatoshi
Crowder Clifford D.
Izaguirre Ismael
Kabushiki Kaisha Kito
LandOfFree
Hoist with load shifted gear, detector, and motor speed changer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hoist with load shifted gear, detector, and motor speed changer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hoist with load shifted gear, detector, and motor speed changer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-693941