High speed pneumatic accelerator

Details High speed pneumatic accelerator High speed pneumatic accelerator

2006-08-15

2006-08-15

Williams, Hezron (Department: 2856)

Measuring and testing

Testing by impact or shock

Accelerated or decelerated specimen

Reexamination Certificate

active

07089777

ABSTRACT:
A pneumatic testing apparatus is provided for accelerating a mass. The apparatus has a housing defining a reservoir and a cylinder having an opened proximate end and a closed distal end. The opened proximate end is positioned within the reservoir and a piston is positioned in the cylinder. The piston has a first side and a second side. A shaft connects to the first side of the piston, the shaft being positioned coaxially within the cylinder and extending through its closed distal end. An exhaust orifice is located at the closed distal end, wherein the mass is positioned on the portion of the shaft extending from the distal end of said cylinder and is accelerated as a gas at a first pressure located in the reservoir enters the open proximate end of the cylinder and urges against the second side of said piston, thereby causing the piston to accelerate toward the distal end of the cylinder and simultaneously accelerate the mass.

REFERENCES:
patent: 770128 (1904-09-01), Teal
patent: 3823600 (1974-07-01), Wolff
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patent: 5517898 (1996-05-01), Kim et al.
patent: 5686652 (1997-11-01), Pfund
patent: 6170768 (2001-01-01), Harmon et al.
patent: 6619634 (2003-09-01), Chen et al.

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