US3758252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nozzle head assembly for injection mold
Assignee: Individual
•
Filing: 1971-11-08
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Granted: 1973-09-11
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Expires: 1991-11-08
Abstract
Abstract A nozzle head assembly for plastic injection molding is provided which has a body with at least two nozzles secured thereto at one end. The other end of the head is provided with plastic receiving opening. Individual passages connect each plastic receiving opening with each nozzle. The nozzles are axially offset with respect to a plastic receiving opening and the passages are formed to a curved configuration to minimize turbulence.
Inventors
- 👤 A Kohler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:38
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/20; B29C45/22; Y; Y10; Y10S; Y10S425/00; Y10S425/228
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
175 words
In a plastic injection molding machine which has a plastic conveying screw having a tapered end portion, a feeding head comprising, a unitary body, means to secure said body to said molding machine to operate therewith as a unit, a plastic receiving opening formed in said body disposed to receive liquid plastic directly from said machine, at least two plastic discharge openings, at least one of said discharge openings being axially offset with respect to the plastic receiving opening, means to secure nozzles in each of said discharge openings, and individual passage means connecting said plastic receiving opening directly with each discharge opening, the plastic receiving opening having a tapered configuration conforming in shape to and being adapted to receive the tapered end portion of the screw in its ejection position, said taper extending to the location where said individual passage means connect with the receiving opening, the configuration of each passage means to each axially offset discharge opening having a curved configuration for smooth fluid flow from the receiving opening to the discharge opening.
Claim 2
Dependent Claim
175 words
In a plastic injection molding machine which has a plastic conveying screw having a tapered end portion, a feeding head comprising, a unitary body, means to secure said body to said molding machine to operate therewith as a unit, a plastic receiving opening formed in said body disposed to receive liquid plastic directly from said machine, at least two plastic discharge openings, at least one of said discharge openings being axially offset with respect to the plastic receiving opening, means to secure nozzles in each of said discharge openings, and individual passage means connecting said plastic receiving opening directly with each discharge opening, the plastic receiving opening having a tapered configuration conforming in shape to and being adapted to receive the tapered end portion of the screw in its ejection position, said taper extending to the location where said individual passage means connect with the receiving opening, the configuration of each passage means to each axially offset discharge opening having a curved configuration for smooth fluid flow from the receiving opening to the discharge opening.
Claim 3
Dependent Claim
77 words
The invention as defined in claim 1 wherein said curved configuration of each curved passage is a compound curve which has a first segment extending from the plastic receiving opening with the radius of the curve lying on the side of said receiving opening toward said discharge opening connected thereto and a second segment extending from said discharge opening with the radius of the curve lying on the side of said discharge opening toward said receiving opening.
Claim 4
Dependent Claim
21 words
The invention as defined in claim 2 wherein the axis of each curved segment is substantially the arc of a circle.
Claim 5
Dependent Claim
53 words
The invention as defined in claim 2 further characterized by nozzle means operatively connected to said head, each nozzle having an axial bore communicating with a passage, and wherein the axis of each of said passages is coaxial with the axis of the nozzle means bore at the discharge opening of the passage.
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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |