Patent US3247295A successfully refreshed from Google Patents.
US3247295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing a foamed plastic article of varying thicknesses
Assignee: Goodyear Tire and Rubber Co
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Filing: 1963-07-17
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Granted: 1966-04-19
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Expires: 1983-07-17
Abstract
No abstract record available.
Inventors
- 👤 Jerome E Burwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:14
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/36; B29C44/362; B29C31/00; B29C31/04; B29C31/042; B29C31/044; B29C31/045; B29C44/38; B29C44/388; B29C33/00; B29C33/34; B29K; B29K2075/00; B29K2105/00; B29K2105/04; Y; Y10; Y10S; Y10S425/00; Y10S425/20; Y10S425/201; Y10S521/00; Y10S521/917
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
77 words
A METHOD OF PRODUCING A A FOAMED ELASTOMERIC ARTICLE COMPRISING THE STEPS OF (1) MIXING A MULTIPART FOAMABLE MIXTURE IN A FOAM DISPENSING UNIT AND DISCHARGING SAID MIXTURE AT A CONSTANT FLOW RATE INTO A MOLD HAVING AT LEAST ONE CAVITY; AND (2) MOVING SAID MOLD RELATIVE TO SAID FOAM DISPENSING UNIT AT A VARIABLE RATE OF SPEED SO THAT THE DEEPER MOLD CAVITIES RECEIVE A GREATER QUANTITY OF FOAMABLE MIXTURE THAN DO CORRESPONDINGLY SHALLOWER MOLD CAVITIES.
Claim 2
Independent Claim
77 words
A METHOD OF PRODUCING A A FOAMED ELASTOMERIC ARTICLE COMPRISING THE STEPS OF (1) MIXING A MULTIPART FOAMABLE MIXTURE IN A FOAM DISPENSING UNIT AND DISCHARGING SAID MIXTURE AT A CONSTANT FLOW RATE INTO A MOLD HAVING AT LEAST ONE CAVITY; AND (2) MOVING SAID MOLD RELATIVE TO SAID FOAM DISPENSING UNIT AT A VARIABLE RATE OF SPEED SO THAT THE DEEPER MOLD CAVITIES RECEIVE A GREATER QUANTITY OF FOAMABLE MIXTURE THAN DO CORRESPONDINGLY SHALLOWER MOLD CAVITIES.
Claim 3
Independent Claim
90 words
AN APPARATUS FOR PRODUCING A FOAMED ARTICLE OF DIFFERENT THICKNESSES COMPRISING A CONVEYOR FRAMEWORK ASSEMBLY HAVING TRAINED THEREOVER CONVEYER MEANS THAT ENGAGES AND PROPELS MOLD SUPPORT MEANS CONTAINING AS A PART THEREOF SWITCH ACTIVATING MEANS WHICH IN TURN COACTS WITH A SWITCHING UNIT MOUNTED AS AN ATTACHED PART OF SAID CONVEYOR FRAMEWORK, SAID SWITCHING UNIT ELECTRICALLY COUPLED WITH SAID CONVEYOR MEANS AND CONTROLLING THE LINEAR RATE OF MOVEMENT OF SAID CONVEYOR MEANS AND THE FLOW FROM A FOAMABLE MIXTURE DISPENSINGUNIT MOUNTED IN CLOSE PROXIMITY WITH RESPECT TO SAID CONVEYOR MEANS.
Claim 4
Independent Claim
90 words
AN APPARATUS FOR PRODUCING A FOAMED ARTICLE OF DIFFERENT THICKNESSES COMPRISING A CONVEYOR FRAMEWORK ASSEMBLY HAVING TRAINED THEREOVER CONVEYER MEANS THAT ENGAGES AND PROPELS MOLD SUPPORT MEANS CONTAINING AS A PART THEREOF SWITCH ACTIVATING MEANS WHICH IN TURN COACTS WITH A SWITCHING UNIT MOUNTED AS AN ATTACHED PART OF SAID CONVEYOR FRAMEWORK, SAID SWITCHING UNIT ELECTRICALLY COUPLED WITH SAID CONVEYOR MEANS AND CONTROLLING THE LINEAR RATE OF MOVEMENT OF SAID CONVEYOR MEANS AND THE FLOW FROM A FOAMABLE MIXTURE DISPENSINGUNIT MOUNTED IN CLOSE PROXIMITY WITH RESPECT TO SAID CONVEYOR MEANS.
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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |