Dental syringe

Details Dental syringe Dental syringe

1977-01-31

1978-08-22

Trapp, Lawrence W.

Surgery

Truss

Perineal

128 62A, 92187, A61H 900

Patent

active

041081676

ABSTRACT:
A hygienic device has a pump for propelling liquid in a flow of pulses, a motor for driving the pump, a switch for supplying power to the motor and means for delivering the propelled liquid to a point of use. A control enables adjustment of the pressure of the delivered liquid. The switch is formed as part of the motor winding assembly and therewith is effectively encapsulated. The pump includes a piston in one end of which is a recess defining a resilient spherical seat and which cooperates with a spherical bearing formed on one end of a piston rod. The control has a valved bypass arrangement wherein various stops and abutments cooperate to permit accurate determination of high and low pressure adjustment during assembly. A rotor within the motor has a cylindrical bore with longitudinal lugs that interfit with ribs on a bearing member that is pressed into the bore. Other features, such as a tilt-out nozzle storage shelf, are included.

REFERENCES:
patent: 3802323 (1974-04-01), Suechting
patent: 3811432 (1974-05-01), Moret
patent: 3820532 (1974-06-01), Eberhardt et al.
patent: 3874506 (1975-04-01), Hill et al.

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