| Patent Number |
Title Of Patent |
Date Issued |
| D382573 |
Motor Drive |
August 19, 1997 |
|
| D379020 |
Fork lift truck |
April 29, 1997 |
|
| D362330 |
Control handle for a material handling vehicle |
September 12, 1995 |
|
| D353118 |
Material handling vehicle operator display |
December 6, 1994 |
|
| 6170341 |
Load sensing system |
January 9, 2001 |
| A processor implemented stabilization system for load handling equipment monitors at least a portion of the equipment weight load at an equipment support member. Reduction below or increase above predetermined values signals an approaching tip over condition and triggers alarm condition |
| 6050770 |
Stabilization system for load handling equipment |
April 18, 2000 |
| A processor implemented stabilization system for load handling equipment monitors at least a portion of the equipment weight load at an equipment support member. Reduction below or increase above predetermined values signals an approaching tip over condition and triggers alarm condition |
| 5890563 |
Lift truck mast hose reeving system with chain guideway |
April 6, 1999 |
| Hydraulic hose lines between an inner rail and an adjacent outer rail of a lift truck mast are reeved within a hollow chain guideway. Opposite ends of the chain are fixed to vertical channels; one channel is mounted to the outer rail and the other, to a center support of the inner rail, |
| 5655411 |
Dual axis carriage assembly for a control handle |
August 12, 1997 |
| A dual axis carriage assembly for industrial control handles includes a base yoke fixed to a support surface and a moveable yoke to which the control handle is attached. Each yoke includes a pair of coaxial spaced bearing surfaces and journal portions of one shaft of a cross shaft as |
| 5585706 |
Speed regulation of DC motor using current sensing means |
December 17, 1996 |
| A system for controlling a separately excited dc motor, where control is achieved through a microprocessor-based independent PWM control of a chopper (armature) and an H-bridge (field), and where mechanical speed sensors are not used. Connected to the armature is an armature voltage |
| 5558174 |
Drive train assembly |
September 24, 1996 |
| A drive train assembly for motorized vehicles, for example lift trucks. The rotational movement of the output shaft of a motor, for example an electrical motor, is transmitted to a drive wheel by a single drive shaft having at one end a gear interface assembly consisting of a gear on the |
| 5487437 |
Coupled differential turning control system for electric vehicle traction motors |
January 30, 1996 |
| A turning control system for an electric vehicle includes a differential filter which receives a signal indicative of a desired vehicle steer angle and generates a pair of signals representative of proportional speed and direction at a left and a right drive wheel of the vehicle. Speed l |
| 5478196 |
Method of handling stacks of baked goods trays |
December 26, 1995 |
| A method for handling conventional stacks of baked goods trays for the baking industry. A platen is moved underneath side-by-side stacks of trays. The platen supports the underside of the stacks of trays and prevents lateral movement of the bottom of the stacks by guiding the platen |
| 5453672 |
Regulation system for decoupled efficiency optimized operation of DC traction motors |
September 26, 1995 |
| A regulation system for controlling a dc motor having a separately excited armature and field includes microprocessor based pulse width (duty cycle) and frequency modulation control of an armature amplifier and a field amplifier. Motor operating efficiency is optimized through microproce |
| 5349279 |
Speed-dependent traction motor controller for vehicles |
September 20, 1994 |
| The invention features a system for controlling separately excited shunt-wound dc motors, where control is achieved through microprocessor-based independent PWM control of a chopper (armature) and an H-bridge (field). Connected to the armature is an armature voltage amplifier for var |
| 5264763 |
Optimizing system for vehicle traction motors |
November 23, 1993 |
| The present invention features a system for optimizing control of separately excited shunt-wound dc motors, where optimization is achieved through microprocessor-based independent PWM control of a chopper (armature) and an H-bridge (field). Connected to the armature is an armature vo |
