Dental syringe with finger actuated tip retainer assembly

Details Dental syringe with finger actuated tip retainer assembly Dental syringe with finger actuated tip retainer assembly

1991-06-25

1992-06-30

O'Connor, Cary E.

Dentistry

Apparatus

Having intra-oral dispensing means

433 85, 433 88, A61G 1702, A61C 110, A61C 112, A61C 1702

Patent

active

051258358

ABSTRACT:
A dental syringe is disclosed having a head and attached handle. Finger actuated valves in the head control water and air flows to a syringe tip having concentric conduits. A tip retainer assembly includes a holder having a socket to insertably receive the syringe tip. A lock collar, slidably carried by said holder, has a conical surface which acts on ball elements in the holder to urge them into locking engagement with a grooved, inserted portion of the syringe tip. A spring automatically positions the collar to the locking position with movement of the collar in an opposite direction to a tip unlocking position by fingertip pressure applied to the collar.

REFERENCES:
patent: 3511235 (1967-08-01), Stran
patent: 4026025 (1977-05-01), Hunt
patent: 4248589 (1981-02-01), Lewis
patent: 4517962 (1985-05-01), Heckele
patent: 4957483 (1990-09-01), Gonser et al.
patent: 4975054 (1990-12-01), Esrock

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