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:
Jul. 31, 2001
Filed:
Nov. 02, 1998
Henry David Barthalow, Greencastle, PA (US);
Grove U.S. LLC, Shady Grove, PA (US);
Abstract
A lift method and apparatus for moving an arm structure includes a first arm structure and a second arm structure pivotally connected to the first arm structure. The apparatus further includes a moving device and a displacing link for displacing the moving device relative to at least the first or second arm structures. The displacing link provides the moving device with a mechanical advantage whereby work required to move the second arm structure is substantially reduced while lifting capacity of the second arm structure and the moving device is substantially increased, and the range of motion of the second arm structure relative to the first arm structure is also increased.