USRE28667E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double tray dental apparatus
Assignee: —
•
Filing: 1972-02-03
•
Granted: 1975-12-30
•
Expires: 1992-02-03
Abstract
Abstract Apparatus is provided to encase both upper and lower dentition of a human mouth. A pair of trays are resiliently hinged together to apply forces operating in a divergent manner to aid in retention of the apparatus in the mouth during use which may be as a mouthguard and as a medication applicator.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:19
CPC Classifications
A; A61; A61C; A61C19/00; A61C19/06; A61C19/063; A61C5/00; A61C5/90; A63; A63B; A63B71/00; A63B71/08; A63B71/085
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
184 words
Dental apparatus, comprising: a pair of upper and lower dentition (encasing troughs;) trays; a hairpin-shaped resilient bridge member disposed adjacent the buccal exteriors of said paired (troughs) trays at each side; said resilient members each having a U-end between a pair of outwardly biased legs; (and) said trays and said resilient members being formed of the same pliant material; and said legs being joined to said (trough) tray sides forward of the posterior portions thereof, the ends of each said leg having a lap connection, non-pivotally anchoring said end to a tray side, the intermediate portions of said resilient members each having reduced cross-sectional area relative the crosssections of said leg ends adjacent said lap connections thereby insuring bending of the resilient members into hairpin shape, said lap connections transferring the forces of said resilient members into the tray sides before and behind said connections whereby resilient members in use exert divergent forces on said trays tending to uniformly press and hold the trays into contact with the user''s teeth during opening and closing of the jaws and during lateral and anterior/posterior movements thereof.
Claim 2
Dependent Claim
184 words
Dental apparatus, comprising: a pair of upper and lower dentition (encasing troughs;) trays; a hairpin-shaped resilient bridge member disposed adjacent the buccal exteriors of said paired (troughs) trays at each side; said resilient members each having a U-end between a pair of outwardly biased legs; (and) said trays and said resilient members being formed of the same pliant material; and said legs being joined to said (trough) tray sides forward of the posterior portions thereof, the ends of each said leg having a lap connection, non-pivotally anchoring said end to a tray side, the intermediate portions of said resilient members each having reduced cross-sectional area relative the crosssections of said leg ends adjacent said lap connections thereby insuring bending of the resilient members into hairpin shape, said lap connections transferring the forces of said resilient members into the tray sides before and behind said connections whereby resilient members in use exert divergent forces on said trays tending to uniformly press and hold the trays into contact with the user''s teeth during opening and closing of the jaws and during lateral and anterior/posterior movements thereof.
Claim 3
Dependent Claim
59 words
Apparatus according to claim 1 in which the U-ends of said resilient members are disposed adjacent the posterior portions of said pair (troughs) of trays and said legs are attached forward thereof. ( 3. Apparatus according to claim 1 in which the troughs and resilient members are formed of pliant material and said resilient members are integrally joined thereto.)
Claim 4
Dependent Claim
16 words
Apparatus according to claim 3 in which said (troughs) trays are closed at their posterior portions.
Claim 5
Dependent Claim
16 words
Apparatus according to claim 1 in which porous, spongelike inserts are disposed in said (troughs.) trays.
Claim 6
Dependent Claim
28 words
Apparatus according to claim 5 in which said (troughs) trays include instanding means upon their inner surfaces to partially overlie and retain said inserts in said (troughs.) trays.
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) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |