US4643664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pointed heat-generating device for molds of injection molding machines
Assignee: Seiki KK
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Filing: 1984-11-30
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Granted: 1987-02-17
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Expires: 2004-11-30
Abstract
Abstract A pointed heat-generating device for molds of injection molding machines comprises a heat-generating body with a conical portion at its front end, a disc-shaped flange at its rear end, a metal casing therebetween, a plurality of first passages in the metal casing for passing a focused resin therethrough, and a plurality of second passage in said flange and communicating with the first passages.
Inventors
- 👤 Yoshiichi Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:03
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/10; B; B29; B29C; B29C45/00; B29C45/17; B29C45/26; B29C45/27; B29C45/30
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
98 words
A pointed heat-generating device for molds of injection molding machines, comprising a heat-generating body having an axis, and a front end and a rear end; a conical portion formed at said front end of said body; a disc-shaped flange arranged at said rear end of said body; a cylindrical metal casing extending between said conical portion and said disc-shaped flange of said body; a plurality of first passages extending axially inside said cylindrical metal casing for passing a fused resin therethrough; and a plurality of second passages extending inside said disc-shaped flange and communicating with said first passages.
Claim 2
Dependent Claim
98 words
A pointed heat-generating device for molds of injection molding machines, comprising a heat-generating body having an axis, and a front end and a rear end; a conical portion formed at said front end of said body; a disc-shaped flange arranged at said rear end of said body; a cylindrical metal casing extending between said conical portion and said disc-shaped flange of said body; a plurality of first passages extending axially inside said cylindrical metal casing for passing a fused resin therethrough; and a plurality of second passages extending inside said disc-shaped flange and communicating with said first passages.
Claim 3
Dependent Claim
21 words
A pointed heat-generating device as defined in claim 1, wherein said first passages extending inside said cylindrical metal casing are concave.
Claim 4
Dependent Claim
43 words
A pointed heat-generating device as defined in claim 1, wherein said cylindrical metal casing and said disc-shaped flange are of one-piece with one another and together form a one-piece element, said first passages and said second passages being arranged inside said one-piece element.
Claim 5
Dependent Claim
117 words
A pointed heat-generating device for molds of injection molding machines, comprising a heat-generating body having an axis, and a front end and a rear end; a conical portion formed at said front end of said body; a disc-shaped flange arranged at said rear end of said body; a cylindrical metal casing extending between said conical portion and said disc-shaped flange of said body; a plurality of first passages extending inside said cylindrical metal casing for passing a fused resin therethrough, said first passages being concave and extending in an axial direction; and a plurality of second passages extending inside said disc-shaped flange and communicating with said first passages, said second passages extending inclinedly relative to said axis.
Claim 6
Dependent Claim
117 words
A pointed heat-generating device for molds of injection molding machines, comprising a heat-generating body having an axis, and a front end and a rear end; a conical portion formed at said front end of said body; a disc-shaped flange arranged at said rear end of said body; a cylindrical metal casing extending between said conical portion and said disc-shaped flange of said body; a plurality of first passages extending inside said cylindrical metal casing for passing a fused resin therethrough, said first passages being concave and extending in an axial direction; and a plurality of second passages extending inside said disc-shaped flange and communicating with said first passages, said second passages extending inclinedly relative to said axis.
Claim 7
Dependent Claim
24 words
A pointed heat-generating device as defined in claim 4, wherein said cylindrical metal casing and said disc-shaped flange are of one-piece with one another.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-02-16 | 1990-08-18 | 1991-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-16 | 1994-08-18 | 1995-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-16 | 1998-08-18 | 1999-02-17 | $7700.00 | Window Closed / Lapsed |