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:
May. 14, 1996
Filed:
Apr. 18, 1994
Applicant:
Inventors:
Paul K Smith, Kirkland, WA (US);
Richard M Curtin, Redmond, WA (US);
Matthew G Kraemer, Seattle, WA (US);
Assignee:
Genie Industries, Inc., Redmond, WA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B66F / ;
U.S. Cl.
CPC ...
187226 ; 187406 ;
Abstract
A multi-stage mast assembly has its mast stages stacked front to back when retracted and has front-to-back guide rollers and side-to-side guide rollers between the mast stages and a front carriage frame. An extrusion is used for the mast stages and the carriage frame. The extrusion has a central hollow rectangular column, inwardly facing channels at the front corners, outwardly directed flanges at the back corners, and pairs of central stub flanges at the front and back.