JOHN DEREK WILCOX
Pilots at Sweet Jasmine Ct, Columbia, SC
License number
South Carolina A3007897
Issued Date
Oct 2016
Expiration Date
Oct 2017
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
1 Sweet Jasmine Ct, Columbia, SC 29229
Professional information
Device For Determining The Size Dash Number Of Standard O-Rings
US Patent:
3965580, Jun 29, 1976
Filed:
Oct 29, 1974
Appl. No.:
5/518610
Inventors:
James S. Bogart - Farmington Hills MI
John M. Wilcox - Columbia SC
John M. Wilcox - Columbia SC
Assignee:
Federal-Mogul Corporation - Detroit MI
International Classification:
G01B 508, G01B 320
US Classification:
33143M
Abstract:
A pair of telescoping elongated prisms locked against separation provide a series of size indications by dash numbers for standardized O-rings in a series of windows. Each face of the inner prism has a semicylindrical projection which matches a similar projection on the outer prism and rests up against it to form what looks like a stationary pulley wheel. Also, the inner prism is provided with diameter-determining grooves. The outer prism also has on each face, or most faces, a projection that looks like a pulley wheel and is the same size as that formed by the matching semi-cylindrical projections and is spaced away from it. The use of the windows in the outer prism and the figures printed on the inner prism enables one to determine the size number of any standard O-ring by first determining its diameter from the measuring grooves and then inserting it on the proper pulley-like projections and extending the slide until the O-ring is taut but not stretched and then reading the dash number size of the O-ring in the appropriate window.