Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with... – Plural distributing means immediately upstream of runner
Patent
1975-01-02
1976-05-11
Peshock, Robert
Rotary kinetic fluid motors or pumps
Working fluid passage or distributing means associated with...
Plural distributing means immediately upstream of runner
415503, A61C 110
Patent
active
039552845
ABSTRACT:
A disposable dental drill assembly is disclosed in this application and includes a housing in which is rotatably carried a rotor member including a turbine blade configuration and which is fixed to the end of a dental burr. The housing is formed with interlock means cooperating with complimentary means formed on a handle member whereby the drill assembly is easily removable from the handle member and can be replaced when the burr wears out. Both the housing and handle are formed with air passages and the handle is connected to a source of air pressure so that air flows over the turbine blades driving the rotor member and, accordingly, the burr. Because the drill assembly is disposable, the housing and the rotor member, including the turbine blade configuration, are made of a relatively inexpensive plastic material which can also be utilized for the handle member.
REFERENCES:
patent: 2033662 (1936-03-01), Witt
patent: 2799934 (1957-07-01), Kern
patent: 2945299 (1960-07-01), Fritz
patent: 3128988 (1964-04-01), Mandrocan
patent: 3210847 (1965-10-01), Prufer
patent: 3298103 (1967-01-01), Maurer
patent: 3408043 (1968-10-01), Williams et al.
patent: 3593425 (1971-07-01), Robinson
patent: 3624905 (1971-12-01), Barsby
Lever Jack Q.
Logan, Jr. John W.
Peshock Robert
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