STEPHEN PAUL JOHNSTON
Pilots at 12 Ave, Hawley, MN
License number
Minnesota A0961619
Issued Date
Jul 2015
Expiration Date
Jul 2017
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
27107 12Th Ave S, Hawley, MN 56549
Professional information
Sphere-Actuated Float Switch
US Patent:
5142108, Aug 25, 1992
Filed:
Apr 1, 1991
Appl. No.:
7/678206
Inventors:
Stephen P. Johnston - Hawley MN
Gene H. Utke - Rochert MN
Robert G. Klabunde - Detroit Lakes MN
Gene H. Utke - Rochert MN
Robert G. Klabunde - Detroit Lakes MN
Assignee:
S. J. Electro Systems, Inc. - Detroit Lakes MN
International Classification:
H01H 3518
US Classification:
200 84R
Abstract:
A sphere-actuated float switch including (i) a cage defining a longitudinal raceway, (ii) a yoke pivotally mounted externally to the cage and having first and second legs which extend into the raceway, (iii) an electrical switching means which is electrically open when the yoke is in a first position and electrically closed when the yoke is in a second position, (iii) an over-center spring capable of biasing the yoke into the appropriate electrically open and the electrically closed positions once the yoke is urged past a transition point, and (iv) a sphere within the raceway for urging the yoke between the electrically open and the electrically closed positions.