Patent ID: 7806349

Claim:
A water jet spray device comprising: a body having two opposite side faces defining the outside of the device, two opposite end faces extending generally normal to the two opposite side faces, a top face and a bottom face, a single cylindrical pressurized chamber with a longitudinal axis from one end face to the other end face and a part extending from said body, wherein said part is integral with said body; a clamp secured relative to said body by screws and defining a bottom face of the device, said part extending from said body towards said clamp, said clamp and said part defining a first groove and a second groove on opposite sides of said part, said first groove and said second groove being parallel to said longitudinal axis; a cavity defined between said clamp and said part; a channel in the form of a slit extending along a generatrix of the chamber through said part directly connecting said chamber to said cavity; a one-piece seal holder configured to releasably hold a seal, said seal holder being positioned within said cavity and having two arms, said two arms being fitted in said grooves so as to inhibit deformation of said seal holder when said seal holder is subject to pressure forces; and a perforated plate disposed between at least portions of said seal holder and said part.