WILLIAM EMMETT ORRILL
Pilots at Davis Ln, Godfrey, IL

License number
Illinois A3958451
Issued Date
Feb 2017
Expiration Date
Feb 2019
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
6812 S Davis Ln, Godfrey, IL 62035

Professional information

William Orrill Photo 1

Dual Water Chamber Bullet Trap

US Patent:
4475734, Oct 9, 1984
Filed:
Oct 5, 1983
Appl. No.:
6/539343
Inventors:
Oliver L. Clarke - Edwardsville IL
William E. Orrill - Godfrey IL
Assignee:
Olin Corporation - Stanford CT
International Classification:
F41J 112
US Classification:
273410
Abstract:
A dual chamber bullet trap has a housing divided into two chambers by an impact plate that extends rearwardly and downwardly from the front to the rear of the trap. In one embodiment the impact plate is fixedly sealed to the housing thus defining a lower-forward chamber below the plate partially filled with water for receiving bullets deflected off the plate, and a second water filled chamber above the plate for stopping bullets which penetrate the impact plate when it fails due to repeated bullet impacts. When the impact plate fails water drains from the upper chamber indicating failure of the impact plate. In a second embodiment the impact plate is hinged along its front edge to the top-front of the trap and is free to pivot upwardly upon bullet impact to help dissipate bullet energy. The upper chamber contains a fluid filled container behind the pivoting impact plate. When bullets penetrate the impact plate they pierce the container allowing water to drain therefrom to indicate impact plate failure.