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US3683938A Expired / Lapsed US ⏱️ 0.0 years remaining

Ash tray

Assignee: Individual
•
Filing: 1970-09-14
•
Granted: 1972-08-15
•
Expires: 1990-09-14
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Abstract

Abstract An ash tray comprising an inner cup-shaped receptacle surrounded by an outer cup-shaped receptacle. Both receptacles have an upper smooth edge so that a cigarette can rest on the two edges; the upper edge of the inner receptacle is lower than that of the outer receptacle, so that a line tangent to the two edges is inclined to the horizontal at an angle lying between 10* and 40*. The distance from the upper edge of the inner receptacle to the opposite wall of the inner receptacle (as measured along an extension of the line tangent to both edges) is between one-eight and one-half the length of a cigarette, and the distance between the two edges on the same line of tangency is between one-half and full length of a cigarette minus the distance from the upper edge of the inner receptacle to the opposite wall of the inner receptacle. The inner receptacle may be circular with a downwardly and inwardly sloping inner surface and a downwardly and outwardly inclined outer surface. The outer receptacle has a downwardly and inwardly sloping wall.

Inventors

  • 👤 David L Rowland

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 16:19
CPC Classifications
A; A24; A24F; A24F19/00; A24F19/0028

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 171 words
An ash tray comprising two concentric cup-shaped portions, an inner cup and an outer cup, both cups having an upper edge, the upper edge of said inner cup being lower than that of the outer cup so that a line tangent to all segments of the contours of the two edges, on which a cigarette would rest, is inclined to the horizontal at an angle lying between 10* and 40*, both said edges being smoothly rounded, so that a cigarette can slide downwardly and inwardly into said inner cup as it shrinks by burning, said outer cup having a downwardly and inwardly sloping wAll, and said inner cup having a downwardly and inwardly sloping inner surface and a downwardly and outwardly sloping outer wall that meets said wall of said outer cup at a vertex that lies along a horizontal plane, a cone in said inner cup projecting up from the bottom thereof to a point, the top of said cone lying below the line tangent to said two upper edges.
Claim 2
Dependent Claim 171 words
An ash tray comprising two concentric cup-shaped portions, an inner cup and an outer cup, both cups having an upper edge, the upper edge of said inner cup being lower than that of the outer cup so that a line tangent to all segments of the contours of the two edges, on which a cigarette would rest, is inclined to the horizontal at an angle lying between 10* and 40*, both said edges being smoothly rounded, so that a cigarette can slide downwardly and inwardly into said inner cup as it shrinks by burning, said outer cup having a downwardly and inwardly sloping wAll, and said inner cup having a downwardly and inwardly sloping inner surface and a downwardly and outwardly sloping outer wall that meets said wall of said outer cup at a vertex that lies along a horizontal plane, a cone in said inner cup projecting up from the bottom thereof to a point, the top of said cone lying below the line tangent to said two upper edges.
Claim 3
Dependent Claim 22 words
The ash tray of claim 1 wherein the said cone meets said downwardly and inwardly sloping inner surface at a circular vertex.

References Cited (Backward Citations)

US1536392A Cited
GB265406A Cited
US2007523A Cited
US2006811A Cited
GB535051A Cited
US2861577A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-08-15 1976-02-14 1976-08-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-08-15 1980-02-14 1980-08-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-08-15 1984-02-14 1984-08-15 $7700.00 Window Closed / Lapsed

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