Filter cartridge for dental syringe
OwnerJames W. Hanseninventor
Life of this patent
Estimating the term…
Abstract
Filter cartridge for filtering air and water dispersed by a dental syringe; the cartridge being a cylindrical member divided into two lengthwise spaces, one filled with water filtering material and the other filled with air filtering material; the cartridge having a barbed prong coupler from each lengthwise space for coupling to a flexible hose support for air or water, respectively; the cartridge having two female recesses for joining each of the two lengthwise spacers separately to barbed prong couplers on the dental syringe.
Claims9
In a dental syringe for selectively directing streams of air or water into a patient's mouth, a disposable filter cartridge having separate filters for air and for water comprising:
- (a) an elongated cartridge body having a forward wall, a rearward wall, and a side wall enclosing an internal space divided into two longitudinal half spaces by an internal axial wall extending from said forward wall to said rearward wall;
- the first of said longitudinal spaces being filled with water filtering material and the second of said spaces being filled with air filtering material;
- an entrance passageway for water through said rearward wall into said first space, an entrance passageway for air through said rearward wall into said second space;
- an exit passageway from said first space through said forward wall to a coupling means with said syringe;
- and exit passageway from said second space through said forward wall to a coupling means with said syringe;
- and means to couple said entrance passageways to separate sources of pressurized air and pressurized water.
Dependencies are inferred from the claim text.