US4531566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and article for facilitating the manufacture of a bondable metallic surface
Assignee: 3M Co
•
Filing: 1984-04-06
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Granted: 1985-07-30
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Expires: 2004-04-06
Abstract
Abstract A pad eliminatable by heat prior to casting has a patterned surface and a non-porous backing. The pad is sized and shaped into at least part of the appliance and the patterned surface is conformed to the desired bonding surface contour. The patterned surface yields irregularities in the cast bonding surface which increases bondability.
Inventors
- 👤 Ralph A. Boettcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:37
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/0003; A61C13/225; A61C13/26; Y; Y10; Y10S; Y10S164/00; Y10S164/04; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
77 words
An article for use in the lost wax investment casting process, comprising; a pad having a surface portion at least partly predeterminedly patterned for producing asperities and increasing bondability in a cast surface derived therefrom, and a non-porous portion backing affixed to said patterned portion, said pad being eliminatable at temperatures employed during the lost wax investment casting process, said patterned portion being fixedly conformable to, and releasably attachable, by a bonding agent to a predetermined surface.
Claim 2
Dependent Claim
77 words
An article for use in the lost wax investment casting process, comprising; a pad having a surface portion at least partly predeterminedly patterned for producing asperities and increasing bondability in a cast surface derived therefrom, and a non-porous portion backing affixed to said patterned portion, said pad being eliminatable at temperatures employed during the lost wax investment casting process, said patterned portion being fixedly conformable to, and releasably attachable, by a bonding agent to a predetermined surface.
Claim 3
Dependent Claim
19 words
The article of claim 1 wherein said patterned surface portion is composed of different material than said backing portion.
Claim 4
Dependent Claim
14 words
The article of claim 1 wherein said backing portion includes a pressure sensitive wax.
Claim 5
Dependent Claim
13 words
The article of claim 1 wherein said surface portion has a mesh pattern.
Claim 6
Dependent Claim
12 words
The article of claim 4 wherein said mesh is a woven polymer.
Claim 7
Dependent Claim
18 words
The article of claim 1 wherein said backing portion includes a barrier layer abutting said patterned surface portion.
Claim 8
Dependent Claim
16 words
The article of claim 1 wherein said predetermined surface is a model of a tooth surface.
Claim 9
Dependent Claim
15 words
The article of claim 1 wherein said pads have predetermined shapes utilizable for dental applications.
References Cited (Backward Citations)
US4479527A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-29 | 1989-01-28 | 1989-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-29 | 1993-01-28 | 1993-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-29 | 1997-01-28 | 1997-07-30 | $7700.00 | Window Closed / Lapsed |