US4888082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for adhesive transfer
Assignee: Nordson Corp
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Filing: 1986-10-31
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Granted: 1989-12-19
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Expires: 2006-10-31
Abstract
Abstract A method and apparatus for applying hot melt adhesive to the parting surfaces of sections of a foam pattern employed in the lost foam metal casting process includes an adhesive applicator operable to dispense a layer of adhesive in a desired pattern onto a transfer surface. The parting surface of a section of a foam pattern is then brought into engagement with the transfer surface so that at least a portion of the adhesive adheres to the parting surface for assembly with a mating section of the foam pattern. The adhesive remaining on the transfer surface after engagement with the parting surface is scraped off and a new layer of adhesive applied in preparation for another section of the foam pattern.
Inventors
- 👤 Raymond M. Fetcenko
- 👤 Jan Wydro
- 👤 Ralph P. Zuponcic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:53
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/80; B22; B22C; B22C7/00; B22C7/02; B22C7/023; B22C7/026; B29C65/00; B29C65/02; B29C65/40; B29C65/48; B29C65/4805; B29C65/481; B29C65/4815; B29C65/52; B29C65/526; B29C66/70; B29C66/72; B29C66/727; B29C66/82; B29C66/824; B29C66/8242; B29C66/83; B29C66/832; B29C66/8322; B29C66/87; B29C66/876; B29C66/8762; B29C65/18; B29C65/78; B29C65/7841; B29C65/7847; B29C66/01; B29C66/05; B29C66/301; B29C66/71; B29K; B29K2105/00; B29K2105/04; B29L; B29L2031/00; B29L2031/757; Y; Y10; Y10T; Y10T156/00; Y10T156/17; Y10T156/1798
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
143 words
Apparatus for applying hot melt adhesive to a parting surface of a section of a foam pattern used in casting metal parts, comprising: a fixed transfer surface; applicator means for dispensing hot melt adhesive; carriage means for moving said applicator means along said fixed transfer surface so that a predetermined pattern of adhesive corresponding in shape to the parting surface of a section of a foam pattern is applied to said fixed transfer surface; means for moving said parting surface of the section of the foam pattern into contact with the layer of hot melt adhesive on said transfer surface so that at least a portion of the hot melt adhesive adheres to the parting surface; means for moving said parting surface of said section of the foam pattern into contact with a mating parting surface of another section of the foam pattern.
Claim 2
Dependent Claim
143 words
Apparatus for applying hot melt adhesive to a parting surface of a section of a foam pattern used in casting metal parts, comprising: a fixed transfer surface; applicator means for dispensing hot melt adhesive; carriage means for moving said applicator means along said fixed transfer surface so that a predetermined pattern of adhesive corresponding in shape to the parting surface of a section of a foam pattern is applied to said fixed transfer surface; means for moving said parting surface of the section of the foam pattern into contact with the layer of hot melt adhesive on said transfer surface so that at least a portion of the hot melt adhesive adheres to the parting surface; means for moving said parting surface of said section of the foam pattern into contact with a mating parting surface of another section of the foam pattern.
Claim 3
Dependent Claim
18 words
The apparatus of claim 1 further including means for collecting hot melt adhesive removed from said transfer surface.
Claim 4
Dependent Claim
78 words
The apparatus of claim 1 in which said carriage means comprises: a pair of spaced rods mounted to said fixed transfer surface; a pair of side plates each carried by one of said spaced rods, said side plates being movable along said spaced rods relative to said transfer surface; support means for mounting said applicator means between said spaced side plates, said applicator means being positioned above said transfer surface and being movable with said side plates therealong.
Claim 5
Dependent Claim
33 words
The apparatus of claim 1 further including scraper means for scraping hot melt adhesive from said transfer surface which remains after contact with the parting surface of the section of the foam pattern.
Claim 6
Dependent Claim
221 words
Apparatus for applying hot melt adhesive to a parting surface of a section of a foam pattern used in casting metal parts, comprising: a transfer surface adapted to conform in shape to the parting surface of the section of a foam pattern; fixed applicator means for dispensing hot melt adhesive; means for moving said transfer surface relative to said fixed applicator means so that said fixed applicator means dispenses a layer of hot melt adhesive onto said transfer surface in a predetermined pattern corresponding to the shape of the parting surface of the section of a foam pattern; means for moving said parting surface of the section of the foam pattern into contact with said layer of hot melt adhesive on said transfer surface so that at least a portion of the hot melt adhesive adheres to the parting surface; support means having a support surface formed with substantially the same shape as the parting surface of the section of a foam pattern, said support surface of said support means being mounted beneath said transfer surface for supporting said transfer surface upon contact with the parting surface of the section of a foam pattern; means for moving said parting surface of said section of the foam pattern into contact with a mating parting surface of another section of the foam pattern.
Claim 7
Dependent Claim
221 words
Apparatus for applying hot melt adhesive to a parting surface of a section of a foam pattern used in casting metal parts, comprising: a transfer surface adapted to conform in shape to the parting surface of the section of a foam pattern; fixed applicator means for dispensing hot melt adhesive; means for moving said transfer surface relative to said fixed applicator means so that said fixed applicator means dispenses a layer of hot melt adhesive onto said transfer surface in a predetermined pattern corresponding to the shape of the parting surface of the section of a foam pattern; means for moving said parting surface of the section of the foam pattern into contact with said layer of hot melt adhesive on said transfer surface so that at least a portion of the hot melt adhesive adheres to the parting surface; support means having a support surface formed with substantially the same shape as the parting surface of the section of a foam pattern, said support surface of said support means being mounted beneath said transfer surface for supporting said transfer surface upon contact with the parting surface of the section of a foam pattern; means for moving said parting surface of said section of the foam pattern into contact with a mating parting surface of another section of the foam pattern.
Claim 8
Dependent Claim
35 words
The apparatus of claim 5 in which said support means comprises a support plate formed with a bottom surface, a top surface and a plurality of throughbores extending between said bottom surface and top surface.
Claim 9
Dependent Claim
39 words
The apparatus of claim 6 further including vacuum means communicating with said bottom surface of said support plate for creating a suction at said top surface to move said transfer surface against said top surface of said support plate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-12-18 | 1993-06-19 | 1993-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-18 | 1997-06-19 | 1997-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-18 | 2001-06-19 | 2001-12-19 | $7700.00 | Window Closed / Lapsed |