US4428373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable dental tray
Assignee: SULTAN DENTAL PRODUCTS Ltd
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Filing: 1982-02-03
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Granted: 1984-01-31
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Expires: 2002-02-03
Abstract
Abstract A disposable dental tray for medications such as fluoride gel, includes a unitary member formed of a flexible foam material defining a pair of hinged U-shaped tray portions configured to fit over the upper and lower teeth of the mouth and wherein each tray portion is defined by a base wall, a pair of end walls and inner and outer side walls. Both of the tray portions are provided with respective tray portion positioning tabs extending from their respective outer side walls. The positioning tabs include respective tab sections which are pre-formed so as to be situated such that when the tray portions are folded, the respective tab sections will automatically abut and be squeezable against each other without the consequent application of any forces to the outer side walls of the tray portion thereby preventing any possibility of distorting the tray portions during use.
Inventors
- 👤 Paul Seid
- 👤 Herbert Wolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:30
CPC Classifications
A; A61; A61C; A61C19/00; A61C19/06; A61C19/063
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
149 words
In a disposable dental tray for topical application of dental medications to the teeth including a unitary member formed of a flexible foam material defining a pair of U-shaped tray portions connected to each other by hinge means and configured to fit over the upper and lower teeth of the mouth respectively when the tray portions are folded around the hinge means, and a tab extending outwardly from each of said tray portions, the improvement comprising: said tabs include respective tab sections which are pre-formed so as to be situated such that when the tray portions are folded, the respective tab sections will contiguously mutually confront each other in the absence of any external forces being applied thereto and be squeezable against each other without the consequent application of any substantial forces on said tray portions which would distort the same, said tabs thereby constituting tray portion positioning tabs.
Claim 2
Dependent Claim
149 words
In a disposable dental tray for topical application of dental medications to the teeth including a unitary member formed of a flexible foam material defining a pair of U-shaped tray portions connected to each other by hinge means and configured to fit over the upper and lower teeth of the mouth respectively when the tray portions are folded around the hinge means, and a tab extending outwardly from each of said tray portions, the improvement comprising: said tabs include respective tab sections which are pre-formed so as to be situated such that when the tray portions are folded, the respective tab sections will contiguously mutually confront each other in the absence of any external forces being applied thereto and be squeezable against each other without the consequent application of any substantial forces on said tray portions which would distort the same, said tabs thereby constituting tray portion positioning tabs.
Claim 3
Dependent Claim
48 words
The combination of claim 1 wherein each tray portion is defined by a base wall, a pair of end walls and inner and outer side walls and wherein said pre-formed tray portion positioning tabs extend integrally and outwardly from said outer side walls of the respective tray portions.
Claim 4
Dependent Claim
28 words
The combination of claim 2 wherein each of said tab sections extends substantially in the region of the plane of the base wall of a respective tray portion.
Claim 5
Dependent Claim
53 words
The combination of claim 2 wherein each tray portion positioning tab includes a first portion extending outwardly from an upper free edge of a respective outer side wall, a second portion extending toward a respective base wall and said tab section extending in the region of the plane of said respective base wall.
Claim 6
Dependent Claim
126 words
In a disposable dental tray for topical application of dental medications to the teeth including a unitary member formed of a flexible foam material defining a pair of hinged U-shaped tray portions configured to fit over the upper and lower teeth of the mouth respectively, each tray portion including a base wall, a pair of end walls and inner and outer side walls, and a tab extending outwardly from an upper edge of an outer side wall of each of the tray portions, the improvement comprising: said tabs each including a pre-formed section which extends from the region of the upper edge of the outer side wall towards the base wall of the respective tray portion in the absence of any external forces being applied thereto.
Claim 7
Dependent Claim
126 words
In a disposable dental tray for topical application of dental medications to the teeth including a unitary member formed of a flexible foam material defining a pair of hinged U-shaped tray portions configured to fit over the upper and lower teeth of the mouth respectively, each tray portion including a base wall, a pair of end walls and inner and outer side walls, and a tab extending outwardly from an upper edge of an outer side wall of each of the tray portions, the improvement comprising: said tabs each including a pre-formed section which extends from the region of the upper edge of the outer side wall towards the base wall of the respective tray portion in the absence of any external forces being applied thereto.
References Cited (Backward Citations)
US4173219A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-30 | 1987-08-01 | 1988-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-30 | 1991-08-01 | 1992-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-30 | 1995-08-01 | 1996-01-31 | $7700.00 | Window Closed / Lapsed |