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
1993-01-19
1994-11-08
Matecki, Katherine
Implements or apparatus for applying pushing or pulling force
Apparatus for hauling or hoisting load, including driven...
Device includes rotatably driven, cable contacting drum
254270, 254273, 318 49, 318112, B66D 100
Patent
active
053615654
ABSTRACT:
An elevating system especially designed for raising and lowering battens used in stages. The elevating system preferably uses two or more winch assemblies with synchronous motors coupled together in parallel to an AC inverter to provide smooth, ramped starting and stopping of the winch assemblies as well as torque boost, speed boost, and electric braking. Each winch assembly is provided with numerous safety features such as overload and underload protection, automatic releveling of the batten, thermal overload protection and cable drum lock protection.
REFERENCES:
patent: 4236456 (1980-12-01), Schreyer et al.
patent: 4298831 (1981-11-01), Espelage et al.
patent: 4361312 (1982-11-01), Schreyer et al.
patent: 4448397 (1984-05-01), Broyden
patent: 4520247 (1985-05-01), Pancook et al.
patent: 4576363 (1986-03-01), Pancook
patent: 4635903 (1987-01-01), Broyden et al.
patent: 4636962 (1987-01-01), Broyden et al.
patent: 4640389 (1987-02-01), Kamaike
patent: 4749920 (1987-06-01), Jaeger et al.
patent: 4780650 (1988-10-01), Miyazaki et al.
patent: 4902954 (1990-02-01), Oshima et al.
patent: 5070290 (1991-12-01), Iwasa et al.
patent: 5106057 (1992-04-01), Feller et al.
Strand Lighting, "Self Climbing Lighting Hoist",-Brochure-Mar. 1992.
Italian TV Studio Literature-Motorized Battens-prior to 1993.
Tomcat, "Staging, Lighting and Support Systems"-Brochure-prior to 1993.
Hoffend & Sons, Inc. "1992 Product Review"-Brochure-1992.
Hoffend & Sons, Inc. "Fly Master 99"-Brochure 1992.
Hoffend & Sons, Inc. "Studio Rigging-The Advanced Self-Climber & Studio Hoist"-Brochure-1992.
LandOfFree
Elevating system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Elevating system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Elevating system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1773366