HOWARD HENRY, D.D.S., MSC
Dentist at Scottsdale Rd, Scottsdale, AZ
License number
Arizona D02445
Category
Dentist
Type
Orthodontics and Dentofacial Orthopedics
Address
Address
11333 N Scottsdale Rd SUITE 250, Scottsdale, AZ 85254
Phone
(480) 367-8900
Professional information
Helicopter Hub System
US Patent:
4473335, Sep 25, 1984
Filed:
Jun 19, 1981
Appl. No.:
6/275247
Inventors:
Howard G. Henry - Scottsdale AZ
Assignee:
Adroit Engineering Company - Scottsdale AZ
International Classification:
B64C 2718
US Classification:
416 20A
Abstract:
A helicopter rotor hub for use in an air-driven helicopter comprises a section of a spherical stainless steel ball attached to the end of a hollow rotor shaft. An air compressor within the helicopter supplies air to the hollow rotor shaft which discharges through it to hollow rotor blades which have discharge nozzles at the trailing edges on their tips. The sole support bearing for the blades is in the form of a cup-shaped concave graphite bearing which engages the stainless steel ball and to which the rotor blades are attached. The graphite provides a lubrication-free bearing surface and also provides a seal against air leakage.