Patent US3583679A successfully refreshed from Google Patents.
US3583679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw feeding method and apparatus
Assignee: Improved Machinery Inc
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Filing: 1968-11-07
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Granted: 1971-06-08
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Expires: 1988-11-07
Abstract
Abstract A method of feeding a plurality of substances (such as the paste and fiber components of a conventional polyester premix) to an injection screw, wherein the substances are supplied to the screw through separate inlets spaced longitudinally of the screw. Also, an injection screw provided with means for so feeding the screw.
Inventors
- 👤 Philip Godley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:38
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/46; B29C45/18; B29C45/1816; B29C48/00; B29C48/25; B29C48/285; B29C48/288; B29C48/2886; B29C48/29; B29C2045/466; B29C48/03; B29K; B29K2105/00; B29K2105/06; B29K2105/12; B29K2105/16; Y; Y10; Y10S; Y10S83/00; Y10S83/913
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
100 words
The method of feeding fiber and paste to an injection screw rotatably driven and axially reciprocating in an injection barrel towards and away from a discharge opening, comprising: supplying fiber to the screw at a first location spaced longitudinally of the screw from the discharge opening; and simultaneously supplying paste to the screw at a second location spaced longitudinally of the screw from the discharge opening and intermediate said first location and the discharge opening, whereby movement of the screw causes intermixing of the fiber and paste and provides through the discharge opening a mixture of the fiber and paste.
Claim 2
Independent Claim
100 words
The method of feeding fiber and paste to an injection screw rotatably driven and axially reciprocating in an injection barrel towards and away from a discharge opening, comprising: supplying fiber to the screw at a first location spaced longitudinally of the screw from the discharge opening; and simultaneously supplying paste to the screw at a second location spaced longitudinally of the screw from the discharge opening and intermediate said first location and the discharge opening, whereby movement of the screw causes intermixing of the fiber and paste and provides through the discharge opening a mixture of the fiber and paste.
Claim 3
Dependent Claim
26 words
The method according to claim 1, wherein the fiber is supplied to the screw by a vibratory feeder, and the paste is pumped to the screw.
Claim 4
Dependent Claim
26 words
The method according to claim 1 wherein the fiber is supplied by a cutting apparatus adapted to cut and supply lengths of fiber to the screw.
Claim 5
Dependent Claim
27 words
The method according to claim 1 wherein the fiber and paste are supplied to the screw only during movement of the screw away from the discharge opening.
Claim 6
Dependent Claim
46 words
The method according to claim 1, wherein the fiber is supplied to the screw by a vibratory feeder, the paste is pumped to the screw, and the fiber and paste are supplied to the screw only during movement of the screw away from the discharge opening.
Claim 7
Dependent Claim
29 words
The method according to claim 1, wherein said first and second locations are spaced a distance approximating the axial distance between corresponding points on nonadjacent spirals of the screw.
Claim 8
Dependent Claim
56 words
The method according to claim 1, wherein the fiber is supplied by a vibratory feeder only during movement of the screw away from the discharge opening, and the paste is supplied by a fluid operated pump arranged to be fluid powered to supply the paste only during movement of the screw away from the discharge opening.
Claim 9
Dependent Claim
113 words
In combination with an injection screw rotatably driven and axially reciprocating in an injection barrel towards and away from a discharge opening, fiber supply means arranged to supply fiber to the screw through an inlet at a first location spaced longitudinally of the screw from the discharge opening, and paste supply means arranged to supply paste to the screw through an inlet at a second location spaced longitudinally of the screw from the discharge opening and from said first location and intermediate the discharge opening and said first location, whereby movement of the screw causes intermixing of said fiber and paste and provides through the discharge opening a mixture of fiber and paste.
Claim 10
Dependent Claim
113 words
In combination with an injection screw rotatably driven and axially reciprocating in an injection barrel towards and away from a discharge opening, fiber supply means arranged to supply fiber to the screw through an inlet at a first location spaced longitudinally of the screw from the discharge opening, and paste supply means arranged to supply paste to the screw through an inlet at a second location spaced longitudinally of the screw from the discharge opening and from said first location and intermediate the discharge opening and said first location, whereby movement of the screw causes intermixing of said fiber and paste and provides through the discharge opening a mixture of fiber and paste.
Claim 11
Dependent Claim
22 words
The combination of claim 8, wherein said fiber supply means comprises a vibratory feeder, and said second supply means comprises a pump.
Claim 12
Dependent Claim
21 words
The combination of claim 8, wherein said fiber supply means comprises cutting means for cutting and supplying cut lengths of fiber.
Claim 13
Dependent Claim
24 words
The combination of claim 8, wherein the space between said inlets approximates the axial distance between corresponding points on nonadjacent spirals of the screw.
Claim 14
Dependent Claim
52 words
The combination of claim 8, wherein said fiber supply means comprises a vibratory feeder adapted to supply fiber during movement of the screw away from the discharge opening, and said paste supply means comprises a fluid operated pump which is automatically fluid powered during movement of the screw from the discharge opening.
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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |