The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 15, 1977
Filed:
Oct. 18, 1976
James Charles Hobson, St. Clair Shores, MI (US);
Arthur John Wroble, Grosse Pointe, MI (US);
Cadillac Gage Company, Warren, MI (US);
Abstract
A water cannon adapted for controlling large crowds of unruly people in a highly effective, yet non-lethal fashion. The cannon can be mounted on an appropriate vehicle, such as an armored car, so as to make it mobile and its supporting system completely self-contained. The water cannon discharges a high velocity stream of water in a pulsing fashion. Each pulse forms a water projectile which is effective against human targets at ranges up to one hundred feet. The water can be treated with a variety of desired additives. The water cannon includes a cannon body on which is operatively mounted a nozzle for discharging the discrete coherent water projectiles. The discharge of the water projectiles is controlled by a main stage valve, which is in turn controlled by a pilot valve. A water supply reservoir and pump are provided for supplying water under pressure to the main stage valve. An electronic control package emits pulses which in turn, energize a water cannon firing solenoid which controls the pilot valve, so as to cause the cannon to discharge in an 'on-off' fashion discharging discrete coherent water projectiles. The pulses emitted are each of a precisely timed duration, approximately 0.3 seconds 'on' and from 0.7 to 1.0 second 'off' to complete one 'on-off' cycle comprising 0.3 to 1.3 seconds duration. The electronic control package ceases emitting pulses after a plurality of shots, as for example three, and the gunner must then reinitiate the firing action.