Cartridge container and ejector piston therefor

Details Cartridge container and ejector piston therefor Cartridge container and ejector piston therefor

1986-11-25

1988-08-30

Wilson, John J.

Dentistry

Apparatus

Having intra-oral dispensing means

433 89, A61C 504

Patent

active

047673265

ABSTRACT:
A miniature capsule-like cartridge adapted to be operated by being mounted in an ejector holder and including a tubular body of uniform inner diameter open at one end and the other end being closed but having a discharge opening therein, the body containing a complementary piston having an innermost pressure end complementary to the interior of the closed end of the body end and provided with an integral thin cylindrical wall at least precisely complementary in outer diameter to the inner diameter of the tubular body and extending axially away from the pressure end of the piston, the piston being operable by a piston post integral at one end with and extending axially away from the pressure end of the piston and connected to the thin cylindrical sleeve by a reinforcing rib extending integrally therebetween.

REFERENCES:
patent: 181226 (1876-08-01), Emde
patent: 860555 (1907-07-01), Middaugh
patent: 2505028 (1950-04-01), Boeger
patent: 3462840 (1969-08-01), Ellman
patent: 3618216 (1971-11-01), Jaeger
patent: 4391590 (1983-07-01), Dougherty
patent: 4560352 (1985-12-01), Neumeister et al.

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