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US3978585A Expired / Lapsed US ⏱️ 0.0 years remaining

Impression trays

Assignee: Individual
•
Filing: 1974-04-05
•
Granted: 1976-09-07
•
Expires: 1994-04-05
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Abstract

Abstract The impression trays of this invention include an upper impression tray having a body which is a convoluted member having an oral plate which follows the general contours of the roof of the mouth and which provides a lingual portion adjacent the upper teeth, and buccal walls which are detachably mounted to the outer rectilinear edges of the body to form a depression in which impression compound may be disposed. This invention also includes a lower impression tray having a U-shaped body, including a trough-like portion corresponding to the base of the U-shape and to the incisors of the lower row of teeth, and a pair of mounting flanges issuing from the trough-like portion as legs of the U-shape, over the lower molar areas, and detachable buccal and lingual walls forming a trough-like depression into which the impression compound may be disposed.

Inventors

  • 👤 Burton V. Holcomb

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 00:43
CPC Classifications
A; A61; A61C; A61C9/00; A61C9/0006

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 67 words
An upper impression tray comprising a body which is a convoluted member having an oral plate which follows the general contours of the roof of the mouth and which provides a lingual portion adjacent the upper teeth, and buccal walls which are detachably mounted by snap lock elements to the outer rectilinear edges of the body, to form a depression in which impression compound may be disposed.
Claim 2
Dependent Claim 67 words
An upper impression tray comprising a body which is a convoluted member having an oral plate which follows the general contours of the roof of the mouth and which provides a lingual portion adjacent the upper teeth, and buccal walls which are detachably mounted by snap lock elements to the outer rectilinear edges of the body, to form a depression in which impression compound may be disposed.
Claim 3
Dependent Claim 84 words
A lower impression tray having a U-shaped body, a trough-like portion corresponding to the base of the U-shape and to the incisors of the lower row of teeth, and a pair of mounting flanges issuing from said trough-like portion as legs of the U-shape, over the lower molar areas, and a lingual walls being detachably mounted to and issuing interiorly from said mounting flanges; and a buccal wall detachably mounted to said body forming a trough-like depression into which impression compound may be disposed.
Claim 4
Dependent Claim 84 words
A lower impression tray having a U-shaped body, a trough-like portion corresponding to the base of the U-shape and to the incisors of the lower row of teeth, and a pair of mounting flanges issuing from said trough-like portion as legs of the U-shape, over the lower molar areas, and a lingual walls being detachably mounted to and issuing interiorly from said mounting flanges; and a buccal wall detachably mounted to said body forming a trough-like depression into which impression compound may be disposed.
Claim 5
Dependent Claim 16 words
The apparatus of claim 2 wherein said lingual wall is detachably mounted to said mounting flanges.
Claim 6
Dependent Claim 19 words
The apparatus of claim 2 wherein said buccal walls are detachably mounted to said mounting flanges by snap locks.
Claim 7
Dependent Claim 18 words
The apparatus of claim 3 wherein said lingual walls are detachably mounted to mounting flanges by snap locks.

References Cited (Backward Citations)

US981476A Cited
US2426388A Cited
US2452866A Cited
US2802269A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-09-07 1980-03-08 1980-09-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-09-07 1984-03-08 1984-09-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-09-07 1988-03-08 1988-09-07 $7700.00 Window Closed / Lapsed

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