Patent US2562549A successfully refreshed from Google Patents.
US5329985A
Expired / Lapsed
US
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Method and apparatus for the individual marking of green sand molds
Assignee: Georg Fischer AG
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Filing: 1993-03-31
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Granted: 1994-07-19
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Expires: 2013-03-31
Abstract
Abstract A method and an apparatus for marking green sand molds are proposed, in which the surface of the sand is individually marked by means of an identification once compacting of the molds in the mold cavity has taken place, in such a way that the marking is transferred from the surface of the sand to the casting by the casting operation.
Inventors
- 👤 Wendelin Weimann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:40
CPC Classifications
B; B22; B22C; B22C23/00; B22D; B22D45/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
56 words
A method of marking green sand casting molds comprising marking a surface of the sand mold after compacting of the sand mold in a mold cavity and removing the sand mold from the mold cavity with an identification mark which is transferred from the surface of the sand mold to the casting during a casting operation.
Claim 2
Independent Claim
56 words
A method of marking green sand casting molds comprising marking a surface of the sand mold after compacting of the sand mold in a mold cavity and removing the sand mold from the mold cavity with an identification mark which is transferred from the surface of the sand mold to the casting during a casting operation.
Claim 3
Dependent Claim
26 words
A method according to claim 1 including applying the identification by contacting the surface of the sand mold under pressure with a die bearing the identification.
Claim 4
Dependent Claim
23 words
A method according to claim 2 including controlling the pressure at which the die is applied to the surface of the sand mold.
Claim 5
Dependent Claim
16 words
A method according to claim 1 including applying the identification by means of a laser beam.
Claim 6
Dependent Claim
14 words
A method according to claim 1 including applying the identification by means of ultrasound.
Claim 7
Independent Claim
87 words
A method of applying indicia to a cast product comprises: (a) compacting a sand mold in a mold cavity; (b) removing the compacted sand mold from the mold cavity; (c) applying indicia to a surface of the compacted sand mold to be contacted by molten metal; (d) casting molten metal into said compacted sand mold such that molten metal contacts said surface of the compacted sand mold; and (e) soldifying said cast metal in said compacted sand mold whereby said indicia is transferred to the cast product.
Claim 8
Independent Claim
87 words
A method of applying indicia to a cast product comprises: (a) compacting a sand mold in a mold cavity; (b) removing the compacted sand mold from the mold cavity; (c) applying indicia to a surface of the compacted sand mold to be contacted by molten metal; (d) casting molten metal into said compacted sand mold such that molten metal contacts said surface of the compacted sand mold; and (e) soldifying said cast metal in said compacted sand mold whereby said indicia is transferred to the cast product.
Claim 9
Dependent Claim
25 words
A method according to claim 6 including applying the indicia by contacting the surface of the compacted sand mold with a die bearing the indicia.
Claim 10
Dependent Claim
24 words
A method according to claim 7 including controlling the pressure at which the die is applied to the surface of the compacted sand mold.
Claim 11
Dependent Claim
16 words
A method according to claim 6 including applying the indicia by means of a laser beam.
Claim 12
Dependent Claim
14 words
A method according to claim 6 including applying the indicia by means of ultrasound.
References Cited (Backward Citations)
US918342A
Cited
US4137962A
Cited
JPS5719151A
Cited
US4708314A
Cited
FR2620370A1
Cited
JPH0618212A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-07-18 | 1998-01-17 | 1998-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-07-18 | 2002-01-17 | 2002-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-07-18 | 2006-01-17 | 2006-07-19 | $7700.00 | Window Closed / Lapsed |