Patent US3997285A successfully refreshed from Google Patents.
US3997285A
Expired / Lapsed
US
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Apparatus for molding an extruded product containing a reinforcing material
Assignee: Individual
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Filing: 1975-02-18
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Granted: 1976-12-14
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Expires: 1995-02-18
Abstract
Abstract The present invention relates to an apparatus for economically molding extruded products containing reinforcement in desired shapes and in large quantities. The operation of the apparatus comprises inserting a reinforcement such as reinforcing bars into extruding materials such as cement, gypsum, plastics or the like during the extrusion molding stage and encasing them under pressure in a body in order to produce extruded articles containing reinforcement which are most suitable for use as construction or structural materials having high rigidity and which are light in weight. Moreover, the above-mentioned extrusion molding can be performed no matter how complicated the shape and structure of the reinforcement may be.
Inventors
- 👤 Hachiro Miyazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:56
CPC Classifications
F; F16; F16L; F16L9/00; F16L9/12; F16L9/127; F16L9/128; B; B29; B29C; B29C48/00; B29C48/03; B29C48/09; B29C48/11; B29C48/15; B29C48/151; B29C48/152; B29C48/153; B29C48/154; B29C48/25; B29C48/30; B29C48/305; B29C48/307; B29C48/36; B29C48/49; B29C48/07; B29C48/08; B29L; B29L2031/00; B29L2031/60
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
283 words
Apparatus for molding an extruded product containing a reinforcing material comprising an injection pipe means having a generally Y-shaped configuration which includes two leg portions joined to a juncture portion, an extruding means joined to each of said leg portions for feeding extruded material to each of said leg portions, said extruded material flowing from said two leg portions to combine in said juncture portion, said juncture portion having an outlet, a guide conduit for feeding reinforcing material, said guide conduit extending into and having an axis generally coincident with the axis of said juncture portion of said injection pipe means, said juncture portion comprising a flow regulating means having an internal passage through which said extruded material flows and through which said guide conduit passes, said flow regulating means internal passage having an inlet portion and an outlet portion, said inlet portion having at least a reduced part thereof which has a cross sectional area less than the cross sectional area of said outlet portion, said reduced part thereby defining a throttle for throttling the flow of extruded material into said outlet portion, and extruding die means disposed at said outlet of said juncture portion, said die means having an internal passage having an inlet, said guide conduit having a longitudinal end terminating substantially at said inlet of said internal passage of said die means such that said reinforcing material passes from said guide conduit into said internal passage of said die means, said internal passage of said die means receiving said confined flow of said extruded material from said juncture section of said injection pipe means to thereby flow around said reinforcing material as the latter exits from such guide conduit.
Claim 2
Dependent Claim
283 words
Apparatus for molding an extruded product containing a reinforcing material comprising an injection pipe means having a generally Y-shaped configuration which includes two leg portions joined to a juncture portion, an extruding means joined to each of said leg portions for feeding extruded material to each of said leg portions, said extruded material flowing from said two leg portions to combine in said juncture portion, said juncture portion having an outlet, a guide conduit for feeding reinforcing material, said guide conduit extending into and having an axis generally coincident with the axis of said juncture portion of said injection pipe means, said juncture portion comprising a flow regulating means having an internal passage through which said extruded material flows and through which said guide conduit passes, said flow regulating means internal passage having an inlet portion and an outlet portion, said inlet portion having at least a reduced part thereof which has a cross sectional area less than the cross sectional area of said outlet portion, said reduced part thereby defining a throttle for throttling the flow of extruded material into said outlet portion, and extruding die means disposed at said outlet of said juncture portion, said die means having an internal passage having an inlet, said guide conduit having a longitudinal end terminating substantially at said inlet of said internal passage of said die means such that said reinforcing material passes from said guide conduit into said internal passage of said die means, said internal passage of said die means receiving said confined flow of said extruded material from said juncture section of said injection pipe means to thereby flow around said reinforcing material as the latter exits from such guide conduit.
Claim 3
Dependent Claim
27 words
Apparatus according to claim 1 wherein said throttle has a converging section followed by a diverging section considered in the direction of flow of said extruded material.
Claim 4
Dependent Claim
21 words
Apparatus according to claim 1 wherein two opposing throttles are provided in said inlet portion of said regulating means internal passage.
Claim 5
Dependent Claim
35 words
Apparatus according to claim 3 wherein said regulating means internal passage has at least partially a generally polygonal configuration having at least two parallel sides said opposing throttles being located adjacent said two parallel sides.
Claim 6
Dependent Claim
251 words
Apparatus for molding an extruded product containing a reinforcing material comprising an injection pipe means having a generally Y-shaped configuration which includes two leg portions joined to a juncture portion, an extruding means joined to each of said leg portions for feeding extruded material to each of said leg portions, said extruded material flowing from said two leg portions to combine in said juncture portion, said juncture portion having an outlet, a guide conduit for feeding reinforcing material, said guide conduit extending into and having an axis generally coincident with the axis of said juncture portion of said injection pipe means, and extruding die means disposed at said outlet of said juncture portion, said die means having an internal passage having an inlet, said guide conduit having a longitudinal end terminating substantially at said inlet of said internal passage of said die means such that said reinforcing material passes from said guide conduit into said internal passage of said die means, said internal passage of said die means receiving said confined flow of said extruded material from said juncture section of said injection pipe means to thereby flow around said reinforcing material as the latter exits from such guide conduit, said internal passage of said die means having an inlet portion and an outlet portion, the minimum cross sectional flow area for extruded material between the terminating end of said guide conduit and said inlet portion being 1.1 to 2.0 times greater than the cross sectional area of said outlet portion.
Claim 7
Dependent Claim
251 words
Apparatus for molding an extruded product containing a reinforcing material comprising an injection pipe means having a generally Y-shaped configuration which includes two leg portions joined to a juncture portion, an extruding means joined to each of said leg portions for feeding extruded material to each of said leg portions, said extruded material flowing from said two leg portions to combine in said juncture portion, said juncture portion having an outlet, a guide conduit for feeding reinforcing material, said guide conduit extending into and having an axis generally coincident with the axis of said juncture portion of said injection pipe means, and extruding die means disposed at said outlet of said juncture portion, said die means having an internal passage having an inlet, said guide conduit having a longitudinal end terminating substantially at said inlet of said internal passage of said die means such that said reinforcing material passes from said guide conduit into said internal passage of said die means, said internal passage of said die means receiving said confined flow of said extruded material from said juncture section of said injection pipe means to thereby flow around said reinforcing material as the latter exits from such guide conduit, said internal passage of said die means having an inlet portion and an outlet portion, the minimum cross sectional flow area for extruded material between the terminating end of said guide conduit and said inlet portion being 1.1 to 2.0 times greater than the cross sectional area of said outlet portion.
Claim 8
Dependent Claim
48 words
Apparatus according to claim 5 wherein said inlet portion is tapered, said terminating end of said guide conduit extending into said tapered inlet portion, said guide conduit having the external surface of its terminating end tapered in the same general direction as the taper of said inlet portion.
Claim 9
Dependent Claim
23 words
Apparatus according to claim 6 wherein said terminating end of said guide conduit terminates within said tapered inlet portion of said die means.
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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) | 1979-12-14 | 1980-06-14 | 1980-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-14 | 1984-06-14 | 1984-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-14 | 1988-06-14 | 1988-12-14 | $7700.00 | Window Closed / Lapsed |