Dental vacuum apparatus
OwnerRobert S. Hollandinventor
Life of this patent
Estimating the term…
Abstract
A dry vacuum apparatus for a dental operatory features an in-line configuration wherein a power unit subassembly is directly mounted upon a collection tank with a pair of brushless DC vacuum motor fan units in axially aligned, vertically stacked reverse relation with air inlets of the motors confronting one another and with a vacuum air outlet of one blower connected in series relation to a vacuum air inlet of the other blower, an air cooling circuit being provided for supplying cooling air to a common sealed plenum chamber servicing the confronting motor air inlets and also to the vacuum air inlets of the blowers.
Claims22
A vacuum apparatus for a dental operatory comprising
- (a) a pair of vacuum motor fan units, each unit including
- (i) a blower with a vacuum air inlet and a vacuum air outlet, and
- (ii) a motor drivingly connected to the blower and having a motor air inlet and a motor air outlet,
- (iii) the vacuum air outlet of one of the pair of blowers being connected in series relation to the vacuum air inlet of the other blower,
- (b) mounting means forming a common sealed plenum chamber and maintaining the vacuum motor fan units with their motor air inlets adjacent one another and opening into the plenum chamber for communicating the plenum chamber with the motors, and
- (c) an air cooling circuit including and air supply line connected to the plenum chamber for supplying cooling air to the plenum chamber and to the motors.
A vacuum apparatus for a dental operatory comprising
- (a) a pair of vacuum motor fan units, each unit including
- (i) a housing,
- (ii) a blower with a vacuum air inlet and a vacuum air outlet, and
- (iii) a motor drivingly connected to the blower and having a motor air inlet and a motor air outlet,
- (b) a resilient sleeve engaging end portions of the housing and maintaining the vacuum motor fan units in axially aligned, reversed tandem relation with their motor air inlets confronting one another, the sleeve forming a common sealed plenum chamber in communication with the motors,
- (c) an air cooling circuit including
- (i) an air supply line connected to the plenum chamber for supplying cooling air to the plenum chamber and to the motors, and
- (ii) an auxiliary air supply conduit in communication with the air supply line and connected in parallel to the vacuum air inlets of the blowers, and
- (d) a blower interconnecting conduit connecting the vacuum air outlet of one blower and the vacuum air inlet of the other blower in series relation.
A dry vacuum apparatus for a dental operatory comprising
- (a) a vacuum power unit including a pair of motor-driven blowers each including a vacuum air inlet and a vacuum air outlet,
- (b) a resilient sleeve maintaining the motor-driven blowers in aligned, tandem relation and forming a common sealed plenum chamber for supplying motor air,
- (c) a tank for collecting dental operatory waste mixtures, the power unit being supported by the tank with a vacuum air inlet of one of the blowers in communication with the tank,
- (d) an air cooling circuit including
- (i) an air supply line connected to the plenum chamber for supplying motor cooling air from an outside source to the plenum chamber, and
- (ii) an auxiliary air supply conduit in communication with the air supply line and connected in parallel to the vacuum air inlets of the blowers, and
- (e) a blower interconnecting conduit connecting the vacuum air outlet of said one blower in series with the vacuum air inlet of the other blower.
Dependencies are inferred from the claim text.