US3995685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foundry flask clamp
Assignee: Individual
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Filing: 1975-05-19
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Granted: 1976-12-07
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Expires: 1995-05-19
Abstract
Abstract Means are provided for joining a pair of foundry flasks which includes in combination one half of a V-shaped dove tail flange along each adjacent edge to be joined so as to form a V-shaped dove tail clamp and generally C-shaped clamp member having a jaw at each end adapted to slidably engage the dove tail flange and having a central depending tongue between the jaws adapted to bear on the two adjacent flanges at this juncture.
Inventors
- 👤 John J. Stanko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:09
CPC Classifications
B; B22; B22C; B22C21/00; B22C21/08; F; F16; F16B; F16B2200/00; F16B2200/30; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7062; Y10T403/7064; Y10T403/7066
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
133 words
In combination a pair of foundry flask parts to be joined, one half of a V-shaped dove tail flange along each edge to be joined, integral with the flask, said flanges abutting one another at the edges to be joined to form a generally flat surface across the two flanges, the adjacent flanges forming a V-shaped dove tail, a generally C-shaped clamp member having two legs extending from a center line at an obtuse angle to one another and having a jaw at each end adapted to slidably engage the dove tail flange, saw jaws acting transversely on the dove tail surfaces of said flanges to urge them together and a central depending tongue on the C-shaped member beneath the center line adapted to bear on the two adjacent flanges at their juncture.
Claim 2
Dependent Claim
133 words
In combination a pair of foundry flask parts to be joined, one half of a V-shaped dove tail flange along each edge to be joined, integral with the flask, said flanges abutting one another at the edges to be joined to form a generally flat surface across the two flanges, the adjacent flanges forming a V-shaped dove tail, a generally C-shaped clamp member having two legs extending from a center line at an obtuse angle to one another and having a jaw at each end adapted to slidably engage the dove tail flange, saw jaws acting transversely on the dove tail surfaces of said flanges to urge them together and a central depending tongue on the C-shaped member beneath the center line adapted to bear on the two adjacent flanges at their juncture.
Claim 3
Dependent Claim
21 words
The combination as claimed in claim 1 wherein the obtuse angle is inverse to the angle of the V-shaped dove tail.
Claim 4
Dependent Claim
120 words
A clamp for joining a pair of foundry flask parts together along a parting line, each flask part having one half of a V-shaped dove tail flange along each edge to be joined integral with the flask parts forming a V-shaped dove tail at the parting line, said flanges abutting one another along the parting line said clamp comprising a generally C-shaped member having two legs extending from a center line at an obtuse angle to one another and having a jaw at each end adapted to slidably engage the dove tail flange and a central depending tongue on the C-shaped member intermediate its ends adapted to bear on the two adjacent flanges at their juncture along the parting line.
Claim 5
Dependent Claim
120 words
A clamp for joining a pair of foundry flask parts together along a parting line, each flask part having one half of a V-shaped dove tail flange along each edge to be joined integral with the flask parts forming a V-shaped dove tail at the parting line, said flanges abutting one another along the parting line said clamp comprising a generally C-shaped member having two legs extending from a center line at an obtuse angle to one another and having a jaw at each end adapted to slidably engage the dove tail flange and a central depending tongue on the C-shaped member intermediate its ends adapted to bear on the two adjacent flanges at their juncture along the parting line.
Claim 6
Dependent Claim
21 words
A clamp as claimed in claim 3 wherein the obtuse angle is inverse to the angle of the V-shaped dove tail.
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) | 1979-12-07 | 1980-06-07 | 1980-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-07 | 1984-06-07 | 1984-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-07 | 1988-06-07 | 1988-12-07 | $7700.00 | Window Closed / Lapsed |