US3712773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for feeding plastic rubber or synthetic rubber mixtures to processing machines
Assignee: Continental AG
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Filing: 1970-12-08
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Granted: 1973-01-23
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Expires: 1990-12-08
Abstract
Abstract In combination with a processing machine, an apparatus in which a strip of natural or synthetic rubber material is fed at intervals into the charging funnel of the processing machine in conformity with the state of filling of the charging funnel, and in which between said feeding intervals a section of the strip of rubber material adjacent said charging funnel is cut off.
Inventors
- 👤 W Baumgarten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:27
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/285; B29C48/288; B29C48/2888; B29C48/03; B29C48/07; B29C48/08; Y; Y10; Y10T; Y10T83/00; Y10T83/081; Y10T83/086
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
120 words
In combination with an extrusion press having a charge inlet, strip feeding means for feeding a strip of a rubber material, cutting means to sever end portions of said strip successively after being fed by said feeding means, means to direct said end portions successively to said charge inlet, control means to operate and stop said feeding means and to operate said cutting means when said feeding means is stopped, and a sensing device in said charge inlet to actuate said control means to stop said feeding device and operate said cutting means in the absence of an end portion in said charge inlet, and to operate said feeding means when an end portion is passing through said charge inlet.
Claim 2
Dependent Claim
120 words
In combination with an extrusion press having a charge inlet, strip feeding means for feeding a strip of a rubber material, cutting means to sever end portions of said strip successively after being fed by said feeding means, means to direct said end portions successively to said charge inlet, control means to operate and stop said feeding means and to operate said cutting means when said feeding means is stopped, and a sensing device in said charge inlet to actuate said control means to stop said feeding device and operate said cutting means in the absence of an end portion in said charge inlet, and to operate said feeding means when an end portion is passing through said charge inlet.
Claim 3
Dependent Claim
19 words
In the combination claimed in claim 1, said extrusion press having means for heating the material in the press.
Claim 4
Dependent Claim
26 words
In the combination claimed in claim 1, in which said cutting means comprises a knife movable transversely across the width of said strip of rubber material.
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) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |