Oral hygiene appliance
First Claim
1. In an oral hygiene appliance, a combination comprising a liquid reservoir;
- a nozzle;
a pump having means for drawing liquid from said reservoir and for delivering spurts of liquid to said nozzle;
prime mover means for driving said pump, said prime mover means comprising a multi-pole electromechanical oscillator including an oscillatory armature and means for connecting said poles to a source of alternating current;
means for regulating the amplitude of oscillations of said armature; and
shutoff valve means installed between said reservoir and said pump and having a valve element movable between open and closed positions, said regulating means comprising a device which is movable to and from a predetermined position in which said source is disconnected from said poles and means for moving said valve element to said closed position in response to movement of said device to said predetermined position.
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Accused Products
Abstract
An oral irrigating appliance wherein the pump which draws liquid from a reservoir and delivers spurts of liquid to a jet tip has a reciprocable piston which receives motion from one arm of an oscillatable two-armed armature forming part of a three-pole electromechanical oscillator connectable to a source of alternating current. The quantity of liquid which the pump delivers to the jet tip per unit of time is variable by changing the amplitude of oscillations of the armature. The pump receives liquid by way of an inlet valve whose valve element is opened by inflowing liquid when the piston performs a suction stroke, and the pump delivers liquid to the jet tip by way of an outlet valve having a valve element which is opened by liquid when the piston performs a compression stroke. The valve element of the inlet valve is closed by liquid when the piston performs a compression stroke, and the valve element of the outlet valve is closed, with a preselected delay, when the piston performs a suction stroke.
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Citations
37 Claims
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1. In an oral hygiene appliance, a combination comprising a liquid reservoir;
- a nozzle;
a pump having means for drawing liquid from said reservoir and for delivering spurts of liquid to said nozzle;
prime mover means for driving said pump, said prime mover means comprising a multi-pole electromechanical oscillator including an oscillatory armature and means for connecting said poles to a source of alternating current;
means for regulating the amplitude of oscillations of said armature; and
shutoff valve means installed between said reservoir and said pump and having a valve element movable between open and closed positions, said regulating means comprising a device which is movable to and from a predetermined position in which said source is disconnected from said poles and means for moving said valve element to said closed position in response to movement of said device to said predetermined position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
- a nozzle;
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26. In an oral hygiene appliance, a combination comprising a liquid reservoir;
- a nozzle;
a pump having means for drawing liquid from said reservoir and for delivering spurts of liquid to said nozzle;
prime mover means for driving said pump, said prime mover means comprising a multi-pole electromechanical oscillator, said pump further comprising a body and said liquid drawing means comprising a piston which is reciprocable in said body and receives motion from said prime mover means;
an inlet valve interposed between said reservoir and said pump and being open whenever said piston performs a first stroke to draw liquid from said reservoir; and
an outlet valve interposed between said pump and said nozzle and being open whenever said piston performs a second stroke to deliver a spurt of liquid to said nozzle, said outlet valve having a valve element which is movable between open and closed positions and the distance between said open and closed positions being such that said outlet valve remains open during the initial stage of each first stroke of said piston. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33)
- a nozzle;
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34. In an oral hygiene appliance, a combination comprising a liquid reservoir;
- a nozzle;
a pump having means for drawing liquid from said reservoir and for delivering spurts of liquid to said nozzle;
prime mover means for driving said pump, said prime mover means comprising a multi-pole electromechanical oscillator, said pump further comprising a body and said liquid drawing means comprising a piston which is reciprocable in said body and receives motion from said prime mover means;
an inlet valve interposed between said reservoir and said pump and being open whenever said piston performs a first stroke to draw liquid from said reservoir; and
an outlet valve interposed between said pump and said nozzle and being open whenever said piston performs a second stroke to deliver a spurt of liquid to said nozzle, each of said valves comprising a valve element which is reciprocable between open and closed positions and at least one of said valve elements having a blind bore with an open end at the downstream side of the respective valve element, as considered in the direction of liquid flow through the respective valve.
- a nozzle;
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35. In an oral hygiene appliance, a combination comprising a liquid reservoir;
- a nozzle;
a pump having menas for drawing liquid from said reservoir and for delivering spurts of liquid to said nozzle;
prime mover means for driving said pump, said prime mover means comprising a multi-pole electromechanical oscillator including an oscillatory armature and a pivot for said armature, said armature having a first arm which is adjacent to the poles of said prime mover means and a second arm, said pump further having a body and said liquid drawing means comprising a piston which is reciprocable in said body; and
means for transmitting motion from said second arm of said armature to said piston, said second arm being adjacent to one side of said piston and said motion transmitting means comprising a first connecting member extending diametrically of and movable axially in said piston and a second connecting member attached to said second arm and coupled to said first connecting member, said members being disposed at right angles to each other. - View Dependent Claims (36, 37)
- a nozzle;
Specification