Power handle for hydraulic toothbrush-spray appliance
AssigneeLes Produits Associes LPA SA
InventorsMichel A. Moret, Pierre J. Jousson
Life of this patent
Estimating the term…
Abstract
A hand-held device for body care, in particular for tooth care and mouth care, which comprises a device casing serving as grip member, a hydraulic piston motor, an instrument holder alternatingly drivable by the motor, a liquid duct connectable to an external liquid pump, for feeding the hydraulic piston motor, and at least one adjustable valve for energizing and stopping the hydraulic motor. The device is adapted for use with treatment instruments which can be attached to the instrument holder in an interchangeable manner, in particular tooth brushes or spraying nozzles.
Claims13
A hand appliance for body care for use with instrument heads requiring alternatively rotational oscillation and liquid pressure pulses, and driven by a source of liquid pressure pulses comprising:
- (a) an elongated casing forming a handle;
- (b) support means mounted in said casing for axially supporting a hollow output shaft;
- (c) said shaft having retaining means for co-operating with detent means of an instrument head and retaining the head on said shaft;
- (d) flexible conduit means for connecting said casing and support means with said source of liquid pressure pulses;
- (e) hydraulic piston motor means for rotationally oscillating said shaft about its longitudinal axis;
- (f) said motor means having a piston circularly curved in the stroke direction connected to said shaft such that its circularly curved longitudinal axis is concentric with and perpendicular to the longitudinal axis of said shaft;
- (g) spring means for returning said piston in one direction of its stroke;
- (h) conduit means with first valve means in said support means for connecting said flexible conduit means to said hydraulic piston motor and for starting and stopping said motor;
- (i) manually actuable control means for controlling said first valve means;
- (j) conduit means with second valve means in said support means for connecting said flexible conduit means to said hollow output shaft;
- and
- (k) control means for controlling said second valve means such that liquid pressure pulses are delivered through said hollow shaft when an instrument head requiring liquid pressure pulses is retained on said shaft.
Dependencies are inferred from the claim text.