William Scott Irwin

US Patent:

43245994, Apr 13, 1982

Filed:

Apr 28, 1980

Appl. No.:

6/144483

Inventors:

Kenneth Range - Arlington VA
William J. Irwin - Port Hueneme CA
Russell Reed - Ridgecrest CA
Wallace E. Silver - Ridgecrest CA

Assignee:

The United States of America as repesented by the Secretary of the Navy - Washington DC

International Classification:

C06B 3310

US Classification:

149 39

Abstract:

An explosive slurry containing red water, a nitrocellulose containing prolant, oxidizer, passivated aluminum and a thickening agent.

US Patent:

20190275396, Sep 12, 2019

Filed:

Mar 9, 2018

Appl. No.:

15/932507

Inventors:

Gary Irwin - Mount Airy MD, US
William Mack Irwin - Mount Airy MD, US

International Classification:

A63B 69/00
A63B 21/00
A63B 23/02
A63B 26/00

Abstract:

The disclosure relates to a training apparatus for increasing core body strength and balance and for providing a repetitive pitching motion exercise for baseball pitchers. The training apparatus comprises a frame structure having a pair of laterally spaced base members for bracing the apparatus on the floor. Each base member is attached to an upright support member that are attached at the top by a lateral connector. A balance pulley is attached to the lateral connector and a balance cord is threaded through the balance pulley. The balance cord has a ball attached to one end and a foot strap attached to the opposite end, such that a user of the apparatus attaches the balance cord foot strap to the non-pivot foot of the user, grabs and extends the ball simulating a throwing motion involving the forward extension of the arm and the forward leaning of the upper body thereby placing the balance cord in tension and lifting the users non-pivot foot and leg upwards towards the balance pulley, thereby forcing the user into a prototypical pitching form. Through repetition, the user strengthens the core muscles, improves balance and increases muscle memory, all in a manner that trains the user to consistently achieve the prototypical pitching form.