US5342195A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental syringe tip and adaptor
Assignee: AAY TO ZEE LP
•
Filing: 1993-01-13
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Granted: 1994-08-30
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Expires: 2013-01-13
Abstract
Abstract Various adaptors are used for securing a replaceable syringe tip in operative relationship to a handpiece body. The syringe tip is mounted on a tapered male connector set in the hollow interior of the adaptor. O ring seals and a metal flange member are used to prevent the leakage of air or water passing from the handpiece into the interior of the adaptor and then into the syringe tip. A captivated thumb nut is utilized to prevent the thumb nut from accidently disengaging completely from the adaptor. When the thumb nut is loosened to replace a syringe tip, the thumb nut will remain captivated on the adapter, only loosening enough to allow removal and insertion of a syringe tip.
Inventors
- 👤 Warren Davis
- 👤 David Wasserman
- 👤 Richard R. Mathews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:55
CPC Classifications
A; A61; A61C; A61C17/00; A61C17/02; A61C17/0202
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
103 words
A syringe tip comprising an elongated cylindrical rigid plastic member having a first central water passageway throughout the entire length of the cylindrical member, said first central water passageway being generally circular in cross-section, and a plurality of second air passageways disposed in a regular pattern circumferentially about the first central water passageway, said second air passageways extending substantially the entire length of the tip and the combined cross-sectional areas of the second air passageways being at least 30% of the total cross-sectional area that would result if the second air passageways were a single continuous annulus completely surrounding the central water passageway.
Claim 2
Dependent Claim
103 words
A syringe tip comprising an elongated cylindrical rigid plastic member having a first central water passageway throughout the entire length of the cylindrical member, said first central water passageway being generally circular in cross-section, and a plurality of second air passageways disposed in a regular pattern circumferentially about the first central water passageway, said second air passageways extending substantially the entire length of the tip and the combined cross-sectional areas of the second air passageways being at least 30% of the total cross-sectional area that would result if the second air passageways were a single continuous annulus completely surrounding the central water passageway.
Claim 3
Dependent Claim
19 words
The syringe tip of claim 1 wherein the cylindrical member has a diameter in the range generally of 0.140"-0.150".
Claim 4
Dependent Claim
16 words
The syringe tip of claim 2 wherein the cylindrical member has a diameter of approximately 0.145".
Claim 5
Dependent Claim
20 words
The syringe tip of claim 1 wherein the first central passageway has a diameter in a range of generally 0.035"-0.039".
Claim 6
Dependent Claim
17 words
The syringe tip of claim 4 wherein the first central passageway has a diameter of approximately 0.036".
Claim 7
Dependent Claim
28 words
The syringe tip of claim 1 wherein there are six second passageways, each second passageway is generally circular and has a diameter in a range of generally 0.021"-0.024".
Claim 8
Dependent Claim
16 words
The syringe tip of claim 6 wherein each second passageway has a diameter of approximately 0.022".
Claim 9
Dependent Claim
27 words
The syringe tip of claim 1 wherein there are six second passageways and each second passageway is elliptical in shape and arranged radially to the central passageway.
Claim 10
Dependent Claim
27 words
The syringe tip of claim 1 wherein there are six second passageways and each second passageway is elliptical in shape and arranged tangentially to the central passageway.
Claim 11
Dependent Claim
25 words
The syringe tip of claim 1 wherein the elongated member is made of a plastic from the group consisting of polycarbonate plastic, nylon or Lexan®.
Claim 12
Dependent Claim
12 words
The syringe tip of claim 10 wherein the elongated member is transparent.
Claim 13
Dependent Claim
12 words
The syringe tip of claim 1 wherein the elongated member is transparent.
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) | 1997-08-29 | 1998-02-28 | 1998-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-08-29 | 2002-02-28 | 2002-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-08-29 | 2006-02-28 | 2006-08-30 | $7700.00 | Window Closed / Lapsed |