Patent US4925510A successfully refreshed from Google Patents.
US4925510A
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US
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Metal parts joint structure and method for producing the same
Assignee: Ryobi Ltd
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Filing: 1986-08-08
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Granted: 1990-05-15
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Expires: 2006-08-08
Abstract
Abstract An aluminum part joint structure including at least two casted joint pieces to be assembled together, each of the pieces being formed with joint surfaces. Adhesive agent layer is provided between the joint surfaces. The adhesive agent comprises 45 to 54 wt % of epoxy resin, 30 to 40 wt % of aluminum particles each having diameter of 0.1 to 0.2 mm, and 4 to 6 wt % of guanidine derivative.
Inventors
- 👤 Nobuyoshi Hojo
- 👤 Yoshiro Asai
- 👤 Motoo Fujioka
- 👤 Naotou Kobayashi
- 👤 Takashi Yamaguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:26
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/10; F02M35/1034; F02M35/10347; F02M35/10314; F02M35/10321; F02M35/10327; F02M35/10354; F02M35/1036; F16; F16B; F16B11/00; F16B11/006; F16J; F16J15/00; F16J15/02; F16J15/14; F02M35/104; F02M35/112; F02M35/116; F05; F05C; F05C2225/00; F05C2225/08; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/256
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
105 words
A method of producing a metal part joint structure comprising the steps of: preparing at least two cast metal joint pieces, each of said pieces being formed with a joint surface; applying adhesives between said joint pieces and joining said joint pieces so as to seal them together, said adhesive comprising 45 to 54 wt% of epoxy resin, 30 to 40 wt% of metal particles, each of said particles having a diameter of 0.1 to 0.2 mm, said particles functioning as a spacer, and 4 to 6 wt% of guanidine derivatives; and, heating said joined pieces for metallurgical integration between said pieces and said adhesive.
Claim 2
Independent Claim
105 words
A method of producing a metal part joint structure comprising the steps of: preparing at least two cast metal joint pieces, each of said pieces being formed with a joint surface; applying adhesives between said joint pieces and joining said joint pieces so as to seal them together, said adhesive comprising 45 to 54 wt% of epoxy resin, 30 to 40 wt% of metal particles, each of said particles having a diameter of 0.1 to 0.2 mm, said particles functioning as a spacer, and 4 to 6 wt% of guanidine derivatives; and, heating said joined pieces for metallurgical integration between said pieces and said adhesive.
Claim 3
Dependent Claim
45 words
The method of claim 1, wherein said joint surfaces are provided with projections each formed with a hole, and further comprising the step of fastening a plurality of bolts with said holes to provide tight coupling between said joint pieces prior to said heating step.
Claim 4
Dependent Claim
23 words
The method of claim 1, wherein said adhesive is applied between said joint surfaces to provide coating thickness of 0.10 to 0.20 mm.
Claim 5
Dependent Claim
14 words
The method of claim 1, wherein said joint pieces are prepared by die-casting method.
Claim 6
Dependent Claim
15 words
The method of claim 1, wherein said joint pieces are prepared by gravity casting method.
Claim 7
Dependent Claim
19 words
The method of claim 1, further comprising the step of machining said joint surfaces prior to said adhesive application.
Claim 8
Dependent Claim
17 words
The method of claim 1, wherein said joint pieces are joined to form an inlet-air surge tank.
Claim 9
Dependent Claim
17 words
The method of claim 1, wherein said joint pieces are joined to form an air surge tank.
Claim 10
Dependent Claim
16 words
The method of claim 1, wherein said joint pieces are joined to form an intake manifold.
Claim 11
Dependent Claim
24 words
The method of claim 1, wherein said heating step is performed at a temperature of 120° to 160° C. for 10 to 30 minutes.
Claim 12
Dependent Claim
80 words
A joint structure for metal parts, comprising: at least two cast joint pieces to be assembled together, each of said pieces being formed with a joint surface, and an adhesive agent layer applied between said joint surfaces, said adhesive agent comprising; 45 to 54 wt% of epoxy resin, 30 to 40 wt% of aluminum particles, each particle having a diameter of 0.1 to 0.2 mm, wherein said aluminum particles function as a spacer, and 4 to 6 wt% guanidine derivative.
Claim 13
Dependent Claim
80 words
A joint structure for metal parts, comprising: at least two cast joint pieces to be assembled together, each of said pieces being formed with a joint surface, and an adhesive agent layer applied between said joint surfaces, said adhesive agent comprising; 45 to 54 wt% of epoxy resin, 30 to 40 wt% of aluminum particles, each particle having a diameter of 0.1 to 0.2 mm, wherein said aluminum particles function as a spacer, and 4 to 6 wt% guanidine derivative.
Claim 14
Dependent Claim
26 words
The structure of claim 11, wherein said adhesive agent layer has a uniform thickness, and said particle diameter is smaller than the thickness of said layer.
Claim 15
Dependent Claim
13 words
The structure of claim 12, wherein said joint pieces are formed of aluminum.
Claim 16
Dependent Claim
32 words
The structure of claim 12, wherein said particles are present in said epoxy in an amount of approximately 35 wt%, and epoxy resin being present in an amount of approximately 50 wt%.
Claim 17
Dependent Claim
29 words
The structure of claim 11, wherein said joint surfaces are provided with projections each formed with a hole, and further comprising a plurality of bolts extending through said holes.
Claim 18
Dependent Claim
14 words
The structure of claim 11, wherein said joint pieces are provided by die-casting method.
Claim 19
Dependent Claim
15 words
The structure of claim 11, wherein said joint pieces are provided by gravity casting method.
Claim 20
Dependent Claim
14 words
The structure of claim 11, wherein said joint surface is at one horizontal plane.
Claim 21
Dependent Claim
34 words
The structure of claim 11, wherein said joint surface includes a first flat plane and a second flat plane intersecting said first flat plane at a predetermined angle, the intersecting line being linearly extended.
Claim 22
Dependent Claim
14 words
The structure of claim 11, wherein said joint structure is an inlet-air surge tank.
Claim 23
Dependent Claim
14 words
The structure of claim 11, wherein said joint structure is an air surge tank.
Claim 24
Dependent Claim
13 words
The structure of claim 11, wherein said joint structure is an intake manifold.
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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) | 1993-05-14 | 1993-11-13 | 1994-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-14 | 1997-11-13 | 1998-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-14 | 2001-11-13 | 2002-05-15 | $7700.00 | Window Closed / Lapsed |