THOMAS CHARLES ONSRUD
Pilots in Bells Cross Roads, NC
License number
North Carolina A2859260
Issued Date
May 2015
Expiration Date
May 2017
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
PO Box 419, Bells Cross Roads, NC 28166
Professional information
Drive Belt Tension Control Apparatus For Inverted Rooter
US Patent:
4893661, Jan 16, 1990
Filed:
Feb 22, 1989
Appl. No.:
7/313983
Inventors:
Thomas C. Onsrud - Troutman NC
Assignee:
C. R. Onsrud, Inc. - Troutman NC
International Classification:
B27C 502
US Classification:
144134A
Abstract:
An inverted router characterized by having a drive motor, a motor driven pulley, a spindle drive pulley and a drive belt for transferring power from the motor driven pulley to the spindle and drive belt tension control apparatus. The drive belt tension control apparatus comprises a mounting plate for mounting the motor driven pulley in variable spaced-apart relation to the spindle drive pulley and a pneumatic cylinder and piston assembly for exerting a predetermined pressure on the motor drive pulley and thereby a predetermined tension on the drive belt.