JAMES WAYNE PURVIS
Engineers in Albuquerque, NM
License number
Virginia 0402011180
Issued Date
Apr 6, 1979
Expiration Date
Nov 30, 2013
Category
Professional Engineer License
Type
Professional Engineer
Address
Address
Albuquerque, NM
Professional information
Armored Garment For Protecting
US Patent:
7571493, Aug 11, 2009
Filed:
Aug 4, 2005
Appl. No.:
11/197245
Inventors:
James W. Purvis - Albuquerque NM, US
Larry D. Whinery - Albuquerque NM, US
Richard Brazfield - Albuquerque NM, US
Catherine Lawrie - Tijeras NM, US
David Lawrie - Tijeras NM, US
Dale S. Preece - Watkins CO, US
Larry D. Whinery - Albuquerque NM, US
Richard Brazfield - Albuquerque NM, US
Catherine Lawrie - Tijeras NM, US
David Lawrie - Tijeras NM, US
Dale S. Preece - Watkins CO, US
Assignee:
Sandia Corporation - Albuquerque NM
International Classification:
F41H 1/02, F41H 1/00
US Classification:
2 25
Abstract:
A lightweight, armored protective garment for protecting an arm or leg from blast superheated gases, blast overpressure shock, shrapnel, and spall from a explosive device, such as a Rocket Propelled Grenade (RPG) or a roadside Improvised Explosive Device (IED). The garment has a ballistic sleeve made of a ballistic fabric, such as an aramid fiber (e. g. , KEVLAR®) cloth, that prevents thermal burns from the blast superheated gases, while providing some protection from fragments. Additionally, the garment has two or more rigid armor inserts that cover the upper and lower arm and protect against high-velocity projectiles, shrapnel and spall. The rigid inserts can be made of multiple plies of a carbon/epoxy composite laminate. The combination of 6 layers of KEVLAR® fabric and 28 plies of carbon/epoxy laminate inserts (with the inserts being sandwiched in-between the KEVLAR® layers), can meet the level IIIA fragmentation minimum Vrequirements for the US Interceptor Outer Tactical Vest.
Device For Adapting Continuously Variable Transmissions To Infinitely Variable Transmissions With Forward-Neutral-Reverse Capabilities
US Patent:
5632703, May 27, 1997
Filed:
Aug 4, 1995
Appl. No.:
8/511599
Inventors:
Donald F. Wilkes - Albuquerque NM
James W. Purvis - Albuquerque NM
A. Keith Miller - Albuquerque NM
James W. Purvis - Albuquerque NM
A. Keith Miller - Albuquerque NM
Assignee:
Sandia Corporation - Albuquerque NM
International Classification:
F16H 926, F16H 3702
US Classification:
475211
Abstract:
An infinitely variable transmission is capable of operating between a maximum speed in one direction and a minimum speed in an opposite direction, including a zero output angular velocity, while being supplied with energy at a constant angular velocity. Input energy is divided between a first power path carrying an orbital set of elements and a second path that includes a variable speed adjustment mechanism. The second power path also connects with the orbital set of elements in such a way as to vary the rate of angular rotation thereof. The combined effects of power from the first and second power paths are combined and delivered to an output element by the orbital element set. The transmission can be designed to operate over a preselected ratio of forward to reverse output speeds.