The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 04, 1980
Filed:
Oct. 23, 1978
Robert G Hedtke, Excelsior, MN (US);
Harley A Harrom, Watertown, MN (US);
Wilfred H Kelley, Jr, Maple Plain, MN (US);
Sherman B Frederick, New Hope, MN (US);
White Farm Equipment Company, Oak Brook, IL (US);
Abstract
An overload warning system for an industrial lift truck including a fluid supported rear suspension, pressure responsive switches communicating with the fluid suspension, and a mast height sensor. One pressure switch is actuatable by a first preset pressure in the fluid suspension to signal the presence of a lift overload with the lift mast retracted. The other pressure switch is actuable by a second preset pressure in the fluid suspension and coacts with the mast height sensor to signal the presence of a lift overload with the lift mast extended.