FERMIN MARTINEZ
Pilots at G Dr, Marshall, MI
License number
Michigan A3917408
Issued Date
Dec 2016
Expiration Date
Jun 2017
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
19292 G Dr N, Marshall, MI 49068
Professional information
Arrowhead And Method Of Making
US Patent:
6319161, Nov 20, 2001
Filed:
Mar 23, 2000
Appl. No.:
9/533751
Inventors:
Fermin Martinez - Marshall MI
Scott Martin - Albion MI
Scott Martin - Albion MI
International Classification:
F42B 608
US Classification:
473583
Abstract:
An arrowhead includes a penetrating tip at a leading end, an elongated core member having plurality of axially extending slots, and a plurality of cutting blades with an axially extending base of each blade received in a respective slot. The spiral cutting edges of the blades extend spirally in the same direction about the arrowhead and overlap circumferentially in a manner to collectively define a generally circular cutting envelope when the arrowhead rotates in flight.