Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with... – Plural distributing means immediately upstream of runner
Patent
1976-08-09
1979-04-03
Kinsey, Russell R.
Rotary kinetic fluid motors or pumps
Working fluid passage or distributing means associated with...
Plural distributing means immediately upstream of runner
415503, A61C 112
Patent
active
041469640
ABSTRACT:
A dental handpiece has a housing with a removable cap together defining a chamber in which are coaxially mounted two bearings, each with an inner race and an outer race spaced apart to leave an intervening gap. Annular housing shields extend into the gaps. The bearings are mounted in elastomeric rings, each having a circular-cylindrical mounting surface. A shaft is disposed in the inner races of the rings. Between the bearings the shaft carries a turbine runner including two cups each having a hub and having peripheral turbine blades spaced apart a predetermined distance. The cups are mounted on the shaft with the cups facing each other so that the hubs and peripheries abut in a common plane normal to the axis and also defining a central annular space. The turbine blades are staggered with respect to each other. They receive air from an inlet passage in the housing and release air to an outlet passage in the housing.
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patent: 3934349 (1976-01-01), Eibofner
patent: 3947966 (1976-04-01), Lieb et al.
patent: 3962789 (1976-06-01), Flatland
Lares Albert J.
Lares Joseph P.
Kinsey Russell R.
Wilson John J.
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