DENNIS EARL SANDMANN
Pilots at Hamilton Dr, Glendora, MI
License number
Michigan A1661131
Issued Date
Sep 2015
Expiration Date
Sep 2017
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
301 N Hamilton Dr, Glendora, MI 49107
Professional information
Expansion Bulb For Plugging A Conduit Or Passage
US Patent:
4506706, Mar 26, 1985
Filed:
May 25, 1983
Appl. No.:
6/498057
Inventors:
Dennis E. Sandmann - Buchanan MI
International Classification:
F16L 5512
US Classification:
138 93
Abstract:
An expansion bulb for plugging a conduit or passage which includes an expandable sleeve encircling a body and secured to the body by caps securing opposite ends of the sleeve to the body with each end of the sleeves extending into recesses in the body. Pressurized air or fluid is supplied through a passage in the body to cause radial expansion of the sleeve relative to the body.