Christopher G Stevenson

US Patent:

20200003401, Jan 2, 2020

Filed:

Jun 29, 2018

Appl. No.:

16/023730

Inventors:

Christopher Stevenson - Canton NY, US

International Classification:

F21V 21/088
A47L 9/30

Abstract:

A tool holder clamp fits over the suction hose or intake nozzle of a vacuum pumper truck. The clamp takes the form of two or more C-shaped sections that can bolt together over the hose, with each C-shaped section having one or more through bores serving as sockets for holding a tool such as a flashlight or the head or nozzle of a jet hose. The sockets have associated slots to permit the socket to be snugged down against the tool.

US Patent:

20150376890, Dec 31, 2015

Filed:

Jun 27, 2014

Appl. No.:

14/317816

Inventors:

David Stevenson - Canton NY, US
Christopher Stevenson - Canton NY, US

International Classification:

E03F 5/22
F16L 11/00

Abstract:

An intake nozzle fits onto the suction hose of a vacuum pumper truck. The nozzle comprises a tubular housing and the rotor within the housing near the intake end. The rotor includes a hollow cylindrical canister and spiral vanes on its exterior. Ambient air enters an air tube, penetrates the side of the housing and supplies ambient air to the interior of the canister. The air exits through outlet ports into the liquid waste as it moves past under vacuum. The injected air reduces the density of the liquid waste, speeding up the pumping process and reducing the incidence of blockages.