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:
Oct. 15, 1991
Filed:
Sep. 22, 1989
Stephen N Miskin, Sandy, UT (US);
Kurt M Lloyd, Pewaukee, WI (US);
Harnischfeger Engineers, Inc., Brookfield, WI (US);
Abstract
A base for a storage and retrieval machine is disclosed in which the frame of the base comprises a pair of spaced apart frame members having a length generally parallel to the rail upon which the base travels and extending a portion of the length of the base. The frame members are positioned straddling the rail with the rail projecting upward into the space between the frame members. A mast is mounted on the base and supports a vertically movable carriage means for carrying objects to and from overhead locations. The pair of frame members may comprise a pair of L-shaped members each having a downwardly projecting upper wall spaced apart from the upper wall of the other L-shaped member and a lower wall projecting away from the lower wall of the other L-shaped member in a direction laterally of the length of the base. The base includes first and second trucks located at opposite ends of the pair of L-shaped members. A wheel is rotatably mounted on each truck and both wheels engage the rail for supporting the storage and retrieval machine as it travels along the rail. The trucks have a height sufficient to support the wheels, however, the L-shaped member pair are positioned at a lower height than the height of the first and second trucks to permit the low height profile of the base. An anti-tip bracket is affixed to a foundation adjacent the path of travel of the base, typically at the end of an aisle in which the rail is located. A lower wall of one of the L-shaped sections engages the anti-tip bracket to hold the storage and retrieval machine from tipping.