Patent US4768954A successfully refreshed from Google Patents.
US4768954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Syringe tip
Assignee: Individual
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Filing: 1986-03-07
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Granted: 1988-09-06
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Expires: 2006-03-07
Abstract
Abstract A dispensing nozzle tip for use with dental syringe which is adapted to be detachably connected to the end of a dental syringe barrel having a uniquely shaped dispensing nozzle which enables the extruded dental material to be dispensed as a flat ribbon for direct placement onto a patient's tooth in a manner which minimizes the time and effort on the part of a dentist to coat a tooth with such dental material; and which nozzle tip is rendered readily disposable to prevent cross-contamination when the dental syringe is used on successive patients.
Inventors
- 👤 William B. Dragan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:08
CPC Classifications
B; B05; B05C; B05C17/00; B05C17/005; B05C17/00593; A; A47; A47B; A47B67/00; A47B67/005; A61; A61C; A61C5/00; A61C5/60; A61C5/62; B05C17/00596; B05C17/00503; B05C17/00506; B05C17/00516; E; E05; E05Y; E05Y2900/00; E05Y2900/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A readily disposable nozzle tip for use with a dental syringe for extruding a dental material in a flat ribbon form for veneer application of a dental material onto a tooth comprising a single unitary tubular body portion defining a reservoir for containing a dental material, said tubular body portion having an open end, a laterally extending flange circumscribing said open end, a discharge end terminating in a discharge orifice unobstructively connected to said tubular body portion opposite said open end, said discharge end tapering from the inlet end thereof toward said discharge orifice, and said discharge end being flat in the vicinity of said discharge orifice to define a generally rectangularly shaped discharge orifice opening whereby the height of said orifice opening is less than the maximum width of said orifice opening to form a thin flat ribbon extrudent, and said discharge orifice being disposed at an angle relative to the longitudinal axis of the tubular body.
Claim 2
Dependent Claim
158 words
A readily disposable nozzle tip for use with a dental syringe for extruding a dental material in a flat ribbon form for veneer application of a dental material onto a tooth comprising a single unitary tubular body portion defining a reservoir for containing a dental material, said tubular body portion having an open end, a laterally extending flange circumscribing said open end, a discharge end terminating in a discharge orifice unobstructively connected to said tubular body portion opposite said open end, said discharge end tapering from the inlet end thereof toward said discharge orifice, and said discharge end being flat in the vicinity of said discharge orifice to define a generally rectangularly shaped discharge orifice opening whereby the height of said orifice opening is less than the maximum width of said orifice opening to form a thin flat ribbon extrudent, and said discharge orifice being disposed at an angle relative to the longitudinal axis of the tubular body.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-09-06 | 1992-03-07 | 1992-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-06 | 1996-03-07 | 1996-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-06 | 2000-03-07 | 2000-09-06 | $7700.00 | Window Closed / Lapsed |