James Samuel Shelton

US Patent:

20130081650, Apr 4, 2013

Filed:

Oct 4, 2011

Appl. No.:

13/252569

Inventors:

Ephraim Gutmark - Cincinnati OH, US
Jeffrey Kastner - Cincinnati OH, US
David Michael Chapin - Cincinnati OH, US
Terry Lewis Farmer - Raytown MO, US
James Knox Shelton - Auburn AL, US

International Classification:

B08B 7/04
B08B 7/02
B08B 3/02

US Classification:

134 1, 134115 R, 134198

Abstract:

A method and system for a tone generator assembly are provided. The tone generator assembly includes a resonance chamber that includes a first end and a second end and a body extending therebetween. The body surrounds a cavity therein, wherein the first end includes a resonance chamber opening in flow communication with the cavity. The tone generator assembly also includes a nozzle having a bore therethrough. The bore includes an inlet opening configured to receive a flow of relatively high pressure fluid and an outlet opening coupled in flow communication with the inlet opening and configured to discharge an underexpanded jet of fluid when the flow of relatively high pressure fluid is received at the inlet opening. The resonance chamber and the nozzle are positioned relatively and sized to facilitate emitting a tone from the tone generator assembly having a frequency less than two kilohertz.

US Patent:

40919420, May 30, 1978

Filed:

Jan 21, 1977

Appl. No.:

5/761194

Inventors:

James A. Shelton - Tacoma WA

International Classification:

B60P 118

US Classification:

214148

Abstract:

A power assisted hand truck is disclosed. The hand truck includes a generally vertically extending rack pivotably mounted on a pair of laterally disposed front wheels and having a load bearing member extending from the front side thereof. A frame is connected to the front wheels and extends rearwardly with respect to the rack. The length of the frame in the rearward direction is adjustable, and the frame includes rear wheels on the underside thereof spaced from the front wheels. A bottom actuator is fixed to the frame and mounted so as to control the length thereof. A top actuator extends from the frame to the rack. The bottom and top actuators are operated to project the lower end of the rack forwardly and tilt the rack backwardly to lift a load resting on the load bearing member for transportation with the hand truck. The actuators are operated in reverse to lower the load.