JAMES A SMITH
Vehicle Board in Chambersburg, PA
License number
Pennsylvania MV030627L
Category
Vehicle Board
Type
Vehicle Salesperson
Address
Address
Chambersburg, PA 17201
Professional information
Lift Vehicle With Multiple Capacity Envelope Control System And Method
US Patent:
2005022, Oct 13, 2005
Filed:
Feb 26, 2004
Appl. No.:
10/786158
Inventors:
Andrew Bean - Greencastle PA, US
James Smith - Chambersburg PA, US
James Smith - Chambersburg PA, US
Assignee:
JLG Industries, Inc. - McConnellsburg PA
International Classification:
B66C013/30
US Classification:
212280000
Abstract:
A multiple envelope control system and method expands the operating capabilities of a lift vehicle. The vehicle includes a platform mounted to a telescoping main boom. The main boom is configured for lift/lower function and telescope function. The multiple envelope control system includes a selector switch for selecting between a plurality of capacity modes including at least a low load mode and a high load mode. A plurality of sensors are strategically positioned on the main boom to cooperatively define position zones of the platform. A control system determines in which position zone the platform located according to signals from the plurality of sensors. The control system controls an envelope of the platform based on a position of the selector switch. By strategically positioning the sensors to define the position zones, inexpensive switches, such as limit switches or the like, can be used, thereby reducing manufacturing costs of the machine.
Boom Lift Vehicle And Method Of Controlling Lifting Functions
US Patent:
2005018, Sep 1, 2005
Filed:
Feb 26, 2004
Appl. No.:
10/786164
Inventors:
Andrew Jay Bean - Greencastle PA, US
James Smith - Chambersburg PA, US
James Smith - Chambersburg PA, US
International Classification:
E04G003/00
US Classification:
182002800
Abstract:
A tower boom path is controlled in a boom lift vehicle such that the tower boom nose pin follows a predetermined path. The boom lift vehicle includes a telescoping lift tower boom pivotally coupled at one end to a vehicle base. A main boom is pivotally coupled to the tower boom nose pin at an opposite end of the tower boom. Raising and lowering of the tower boom between a fully retracted position and a raised position is effected by pivoting the tower boom relative to the vehicle base and telescoping the tower boom. The raised position is defined according to any position up to a maximum angle of the tower boom relative to the vehicle base and a maximum boom length. In order to reduce vehicle weight and expedite the tower boom lift function, pivoting of the tower boom relative to the vehicle base and telescoping of the tower boom are performed simultaneously so that the tower boom nose pin follows the predetermined path. With this arrangement, positions of the tower and main booms conventionally generating large turning moments on the vehicle can be avoided, and consequently, a counterweight of lower mass can be used.