MARK JOHNSON
Electrician in Highland, UT
License number
Utah 316542-5505
Issued Date
Jan 17, 1996
Expiration Date
Nov 30, 2014
Category
Electrician
Type
Apprentice Electrician
Address
Address
Highland, UT
Education
UTAH VALLEY UNIVERSITY
Professional information
Dual Mast Apparatus For Storage And Retrieval Vehicles
US Patent:
5149241, Sep 22, 1992
Filed:
Apr 12, 1991
Appl. No.:
7/684423
Inventors:
Ralph B. Haymore - Salt Lake City UT
Mark I. Johnson - American Fork UT
Mark I. Johnson - American Fork UT
Assignee:
Eaton-Kenway, Inc. - Salt Lake City UT
International Classification:
B65G 100
US Classification:
414279
Abstract:
A novel dual mast storage and retrieval vehicle comprising structure which maintains each mast essentially vertical as variably weighted heavy loads are placed on a carriage disposed between the masts. Each mast is disposed near the center of a separately supported base such that bending of the base under such loads induces little off-vertical deflection to the mast. The separately supported bases are coupled by a connector which comprises cross-aisle and vertical degrees of freedom but is strictly constrained in the down-aisle direction. In the currently preferred embodiment, two down-aisle drive motors, in master/slave relationship, provide a synchronous drive for the vehicle. Further, interconnecting joints a strut at the top of the masts and of the carriage comprise hinges which resist propagation of mast induced moments caused by beam deflection or vehicle dynamics. The invention comprises a lift cable vertical drive assembly wherein a motor is horizontally disposed down-aisle in line with a lift cable winding and unwinding drum. The vertical drive assembly is modularly assembled on a frame and is attachable and detachable from the vehicle as a unit.