DAVID ALLAN BOLDENOW
Pilots at Taxiway Dr, Granbury, TX
License number
Texas A0174971
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
9600 Taxiway Dr, Granbury, TX 76049
Professional information
Double Rotor-Vane Pump
US Patent:
2001003, Oct 25, 2001
Filed:
Jan 16, 2001
Appl. No.:
09/760993
Inventors:
David Boldenow - Granbury TX, US
International Classification:
F04C018/344, F04C023/00
US Classification:
418/069000, 418/212000
Abstract:
Two rotary vane pumps driven by a common drive shaft with each pump sharing a common intake. Each pump's rotor is connected to the drive shaft by shear means. A valve is utilized to seal off a failed pump, and to protect the operating pump from foreign objects created by the failed pump. If either rotary vane pump fails its shear means, the other pump continues to operate unaffected, and maintains nominal pump performance.