Abstract: An aerial work platform assembly is provided, comprising a platform shaft retaining assembly; a mounting bracket connected to the platform shaft retaining assembly; and a platform connected to the mounting bracket; wherein the platform shaft retaining assembly, mounting bracket, and platform are constructed from the same or differing composite materials comprising a fabric-reinforced resin. Optionally, the fabric-reinforced resin includes a preform fabric having a conformable three-dimensional weave, and the resin is a dielectric resin selected from either epoxy, epoxy vinyl ester, vinyl ester, polyester, or phenolic.
Type:
Grant
Filed:
April 16, 2010
Date of Patent:
October 8, 2013
Assignee:
Altec Industries
Inventors:
Daniel Higgins, Ryan McKinney, Jason Oakley
Abstract: A side load detection and protection system (10) operable using pressure sensors (26, 28) to determine side load as a function of a difference in media pressure between two ports (40, 42) of a pneumatic/hydraulic rotation motor (22). When the side load exceeds a pre-established limiting value, the system (10) shuts off functions that could be causing the side load. The system (10) includes a visual display (34) to communicate the actual amount of side load and to present a warning when the limiting side load value has been reached or exceeded. The system (10) is able to differentiate between loads applied to the rotation mechanism through operation of the pneumatic/hydraulic rotation motor (22) and loads due to external forces acting directly or indirectly on the system (10). Furthermore, in order to account for different efficiencies, the system (10) can have separate set-points for side load in clockwise or counterclockwise directions.
Type:
Grant
Filed:
May 1, 2001
Date of Patent:
May 11, 2004
Assignee:
Altec Industries
Inventors:
Richard L. Hoffelmeyer, Harlan H. Henke, Steven L. Jones