US4456653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pin for connecting machine elements with each other
Assignee: Novartis Corp
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Filing: 1983-03-28
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Granted: 1984-06-26
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Expires: 2003-03-28
Abstract
Abstract In order to provide a pin for connecting machine parts with one another, which is of optimally light weight, the pin is of a compound structure comprising a core of filler-reinforced synthetic plastics resin and a metallic envelope. As filler there are used quartz sand or carbon fibers. The envelope is preferably seated on the core under circumferential tensile bias. The manufacture of the pin takes place, for instance, by pressing the filler and a matrix resin system directly into a suitably prepared envelope.
Inventors
- 👤 Christoph Ruegg
- 👤 Peter Voirol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:26
CPC Classifications
B; B29; B29C; B29C43/00; B29C43/02; B29C43/18; B29C43/003; C; C08; C08K; C08K7/00; C08K7/02; C08K7/04; C08K7/06; F; F16; F16J; F16J1/00; F16J1/10; F16J1/14; F16J1/16; B29K; B29K2105/00; B29K2105/06; B29K2105/12; B29K2105/16; B29K2307/00; B29K2709/00; B29L; B29L2001/00; B29L2001/002; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32861; Y10T403/45; Y10T403/451; Y10T403/49; Y10T403/4933; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2918; Y10T428/2927; Y10T428/2933; Y10T428/2935; Y10T428/294; Y10T428/2973; Y10T428/2975
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
74 words
A pin having a central longitudinal pin axis and being adapted for connecting machine elements with each other, which pin comprises a metal shell and a core therein, said core consisting essentially of fully hardened, oil-fast matrix system of an epoxide resin system having a glass transition temperature above 200° C. and at least about 55 percent by volume of the total core volume of a reinforcing granular filler material embedded in said system.
Claim 2
Dependent Claim
74 words
A pin having a central longitudinal pin axis and being adapted for connecting machine elements with each other, which pin comprises a metal shell and a core therein, said core consisting essentially of fully hardened, oil-fast matrix system of an epoxide resin system having a glass transition temperature above 200° C. and at least about 55 percent by volume of the total core volume of a reinforcing granular filler material embedded in said system.
Claim 3
Dependent Claim
30 words
The pin of claim 1, wherein the amount of said granular filler in the core ranges from about 65 to about 70 percent by volume of the total core volume.
Claim 4
Dependent Claim
17 words
The pin of claim 1, wherein said granular filler is selected from quartz sand and amorphous quartz.
Claim 5
Dependent Claim
25 words
The pin of claim 1, wherein the thickness of the shell is in the range of from about 1 to 10% of the pin diameter.
Claim 6
Dependent Claim
24 words
The pin of claim 4, wherein the thickness of the shell is in the range of from 3 to 6% of the pin diameter.
Claim 7
Dependent Claim
37 words
The pin of claim 1, wherein the epoxide resin system is a fully cured mixture of (a) polyfunctional epoxide resin monomer, (b) hardener therefor, and (c) from 0 parts by weight to an effective amount of catalyst.
Claim 8
Dependent Claim
71 words
The pin of claim 6, wherein the component (a) is selected from the group consisting of triglycidyl isocyanurate, 1,1,2,2-tetra(4-glycidyloxy-phenyl)-ethane, 1,1,3-tri(4-glycidyloxy-phenyl)-propane, epoxynovolak, N,N,N',N'-tetraglycidyl-4,4'-diaminodiphenylmethane and N,N,O-triglycidyl-p-hydroxyaniline; component (b) is selected from the group consisting of methylnadic anhydride (methyl-norbornen-2,3-dicarboxylic anhydride), nadic anhydride (norbornen-2,3-dicarboxylic phthalic anhydride, /anhydride), benzophenone tetracarboxylic dianhydride, pyromellitic dianhydride, hexahydrophthalic anhydride, maleic anhydride, diaminodiphenylmethane and diaminodiphenylsulfone; and component (c) is a catalyst selected from the group consisting of N-methylimidazole, 2-phenylimidazole and N,N-dimethyl-benzylamine.
Claim 9
Dependent Claim
42 words
The pin of claim 7, wherein component (a) consists of 100 parts by weight of triglycidyl isocyanurate, the hardener component (b) amounts to from 130 to 190 parts by weight, and component (c) amounts to from 0 to 4 parts by weight.
Claim 10
Dependent Claim
11 words
The pin of claim 8, wherein component (b) is methylnadic anhydride.
Claim 11
Dependent Claim
11 words
The pin of claim 8, wherein component (b) is hexahydrophthalic anhydride.
Claim 12
Dependent Claim
11 words
The pin of claim 8, wherein component (b) is maleic anhydride.
Claim 13
Dependent Claim
22 words
The pin of claim 24, wherein component (c) is N,N-dimethyl-benzylamine present in an amount of from 0.5 to one part by weight.
Claim 14
Dependent Claim
22 words
The pin of claim 8, wherein component (c) is 1-methylimidazole present in an amount of from 0.5 to one part by weight.
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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) | 1987-06-26 | 1987-12-26 | 1988-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-26 | 1991-12-26 | 1992-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-26 | 1995-12-26 | 1996-06-26 | $7700.00 | Window Closed / Lapsed |