US3838728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for molding finger rings
Assignee: Jostens Inc
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Filing: 1973-06-01
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Granted: 1974-10-01
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Expires: 1993-06-01
Abstract
Abstract A method of molding a finger ring having a hollowed out interior portion which includes forming a ring pattern by forming a first structure of a first moldable material in the shape of the final ring, dissolving a layer of desired thickness from such first structure, to form a second structure, forming a third structure by introducing a second moldable material into a cavity between the second structure and a molding apparatus, forming a fourth structure by dissolving all of said first material from said third structure, forming a fifth structure by introducing a third moldable material into a cavity between the fourth structure and an arbor, and finally, introducing a fourth moldable material into a cavity between the fifth structure and a molding apparatus.
Inventors
- 👤 L Voegele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:08
CPC Classifications
B; B22; B22C; B22C7/00; B22C7/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
141 words
A method of making a finger ring comprising the following method steps: introducing a first moldable material which is soluble in a first solution into a first molding cavity formed by at least two molding sections and an arbor to form a first structure; exposing said first structure to said first solution to form a second structure; introducing a second moldable material which is non-soluble in said first solution into a second cavity formed between said molding sections and said second structure to form a third structure; exposing said third structure to said first solution to form a fourth structure; introducing a third moldable material into a third cavity formed between said fourth structure and said arbor to form a fifth structure; and introducing a fourth moldable material into a fourth cavity formed between said fifth structure and said molding sections.
Claim 2
Independent Claim
141 words
A method of making a finger ring comprising the following method steps: introducing a first moldable material which is soluble in a first solution into a first molding cavity formed by at least two molding sections and an arbor to form a first structure; exposing said first structure to said first solution to form a second structure; introducing a second moldable material which is non-soluble in said first solution into a second cavity formed between said molding sections and said second structure to form a third structure; exposing said third structure to said first solution to form a fourth structure; introducing a third moldable material into a third cavity formed between said fourth structure and said arbor to form a fifth structure; and introducing a fourth moldable material into a fourth cavity formed between said fifth structure and said molding sections.
Claim 3
Dependent Claim
24 words
The method of claim 1 including exposing said third structure to said first solution until all of said first moldable material has dissolved therefrom.
Claim 4
Dependent Claim
30 words
The method of claim 1 wherein said first solution is water, said first moldable material is a water soluble wax and said second moldable material is a non-water soluble wax.
Claim 5
Dependent Claim
26 words
The method of claim 1 wherein the introduction of said fourth moldable material into said fourth cavity results in the formation of a finger ring pattern.
Claim 6
Dependent Claim
27 words
The method of claim 4 including encasing said finger ring pattern in an investment plaster material and molding a finger ring via the investment method of casting.
Claim 7
Dependent Claim
30 words
The method of claim 1 including exposing said first structure to said first solution until a layer of desired thickness has been dissolved from the surface of said first structure.
Claim 8
Dependent Claim
31 words
The method of claim 6 including exposing said first structure to said first solution until a layer approximately 0.025 inches thick has been dissolved from the surface of said first structure.
Claim 9
Dependent Claim
32 words
The method of claim 1 wherein the step of forming said fifth structure includes allowing said third moldable material to harden and removing said fourth structure from the hardened third moldable material.
Claim 10
Dependent Claim
22 words
The method of claim 8 wherein said fifth structure includes a portion of said third moldable material securely bonded to said arbor.
Claim 11
Independent Claim
255 words
A method of molding a finger ring which comprises the following method steps: forming a first structure by introducing a first moldable material which is water soluble into a first molding cavity formed by at least two molding sections and an arbor extending therebetween; forming a second structure by removing the arbor with said first structure molded thereto and exposing said first structure to water for a preselected time to dissolve away a layer of desired thickness from the surface of said first structure; forming a third structure by placing said second structure and said arbor between said molding sections and introducing a second moldable material which is non-soluble in water into a second molding cavity formed between the molding sections and the second structure; forming a fourth structure by removing said third structure from said molding sections and said arbor and exposing said third intermediate mold structure to water until all of the first moldable material has dissolved from said third structure; forming a fifth structure by placing said fourth structure and said arbor between said mold sections and introducing a third moldable material into a third molding cavity formed between said fourth structure; forming a finger ring pattern by removing said fifth structure with said arbor molded thereto from said molding sections and removing the second moldable material therefrom and introducing a fourth moldable material into a fourth cavity formed between said fifth structure and the molding sections. forming a finger ring from said finger ring pattern via the investment method of casting.
Claim 12
Independent Claim
255 words
A method of molding a finger ring which comprises the following method steps: forming a first structure by introducing a first moldable material which is water soluble into a first molding cavity formed by at least two molding sections and an arbor extending therebetween; forming a second structure by removing the arbor with said first structure molded thereto and exposing said first structure to water for a preselected time to dissolve away a layer of desired thickness from the surface of said first structure; forming a third structure by placing said second structure and said arbor between said molding sections and introducing a second moldable material which is non-soluble in water into a second molding cavity formed between the molding sections and the second structure; forming a fourth structure by removing said third structure from said molding sections and said arbor and exposing said third intermediate mold structure to water until all of the first moldable material has dissolved from said third structure; forming a fifth structure by placing said fourth structure and said arbor between said mold sections and introducing a third moldable material into a third molding cavity formed between said fourth structure; forming a finger ring pattern by removing said fifth structure with said arbor molded thereto from said molding sections and removing the second moldable material therefrom and introducing a fourth moldable material into a fourth cavity formed between said fifth structure and the molding sections. forming a finger ring from said finger ring pattern via the investment method of casting.
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) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |