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:
Dec. 15, 1992
Filed:
Jul. 15, 1991
Craig A Devroy, New Berlin, WI (US);
Harnischfeger Engineers, Brookfield, WI (US);
Abstract
A storage and retrieval machine having a base movable in opposite horizontal directions, a mast mounted on the base, and a carriage movable in opposite vertical directions on the mast. A drive is also provided for moving the base and carriage in their respective opposite horizontal directions or opposite vertical directions. A control is connected to the drive for transmitting to the drive for either the base or the carriage, a first signal for a fast acceleration rate in one of the opposite directions of movement, a second signal for a slow acceleration rate in the other of the opposite directions of movement, a third signal for a slow deceleration rate in one of the opposite directions of movement, a fourth signal for a fast deceleration rate in the other of the opposite directions of movement, and a direction signal to move in one of the opposite directions. The drive is responsive to the control to move either one of the base and carriage in their associated opposite directions of movement and accelerate and decelerate the base or carriage in accord with the respective acceleration and deceleration rate signals for the movement direction.