US2729967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for determining the characteristics of a thermoplastic material
Assignee: MW Kellogg Co
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Filing: 1954-05-27
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Granted: 1956-01-10
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Expires: 1974-05-27
Abstract
No abstract record available.
Inventors
- 👤 Herman S Kaufman
- 👤 Carmen R Giannotta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:33
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/26
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
92 words
A METHOD FOR DETERMINING THE CHARACTERISTICS OF A THERMOPLASTIC MATERIAL, WHICH COMPRISES: SUSPENDING, AT ONE END, AN ELONGATED SPECIMEN OF A THERMOPLASTIC MATERIAL, NOTCHED BETWEEN THE ENDS THEREOF, IN A HEATING ZONE; PULLING THE OTHER END OF SAID THERMOPLASTIC SPECIMEN AT A CONSTANT TENSION; MAINTAINING A SUBSTANTIALLY CONSTANT TEMPERATURE IN SAID HEATING ZONE WHICH IS BETWEEN THE SOFTENING TEMPERATURE OF SAID THERMOPLASTIC MATERIAL AND BELOW THE TEMPERATURE OF SUBSTANTIAL DEGRADATION: AND MEASURING THE PERIOD OF TIME REQUIRED FOR SAID THERMOPLASTIC SPECIMEN TO PULL APART AT THE NOTCHED PORTION THEREOF AT SAID TEMPERATURE.
Claim 2
Independent Claim
92 words
A METHOD FOR DETERMINING THE CHARACTERISTICS OF A THERMOPLASTIC MATERIAL, WHICH COMPRISES: SUSPENDING, AT ONE END, AN ELONGATED SPECIMEN OF A THERMOPLASTIC MATERIAL, NOTCHED BETWEEN THE ENDS THEREOF, IN A HEATING ZONE; PULLING THE OTHER END OF SAID THERMOPLASTIC SPECIMEN AT A CONSTANT TENSION; MAINTAINING A SUBSTANTIALLY CONSTANT TEMPERATURE IN SAID HEATING ZONE WHICH IS BETWEEN THE SOFTENING TEMPERATURE OF SAID THERMOPLASTIC MATERIAL AND BELOW THE TEMPERATURE OF SUBSTANTIAL DEGRADATION: AND MEASURING THE PERIOD OF TIME REQUIRED FOR SAID THERMOPLASTIC SPECIMEN TO PULL APART AT THE NOTCHED PORTION THEREOF AT SAID TEMPERATURE.
Claim 3
Dependent Claim
124 words
APPARATUS FOR DETERMINING THE CHARACTERISTICS OF A THERMOPLASTIC MATERIAL, WHICH COMPRISES IN COMBINATION: AN ELONGATED HEATING VESSEL HAVING A PASSAGEWAY EXTENDING VERTICALLY THERETHROUGH ADAPTED TO HAVE SAID THERMOPLASTIC MATERIAL SUSPENDED THEREIN; MEANS FOR HEATING SAID VESSEL; THERMOSTAT MEANS RESPONSIVE TO THE TEMPERATURE IN THE INTERIOR OF SAID VESSEL FOR CONTROLLING SAID HEATING MEANS AND MAINTAINING A SUBSTANTIALLY CONSTANT TEMPERATURE IN SAID VESSEL; MEANS FOR INSULATING SAID VESSEL; A BASE MEMBER; MEANS FOR FIXING SAID HEATING VESSEL IN A VERTICAL POSITION ABOVE SAID BASE MEMBER; TIME REGISTERING MEANS; MEANS RESPONSIVE TO THE INTRODUCING OF SAID THERMOPLASTIC MATERIAL INTO SAID PASSAGEWAY FOR STARTING SAID TIME REGISTERING MEANS; AND MEANS FOR STOPPING SAID TIME REGISTERING MEANS ACTUATED BY THE FALLING OF SAID THERMOPLASTIC MATERIAL THROUGH SAID PASSAGEWAY.
Claim 4
Dependent Claim
124 words
APPARATUS FOR DETERMINING THE CHARACTERISTICS OF A THERMOPLASTIC MATERIAL, WHICH COMPRISES IN COMBINATION: AN ELONGATED HEATING VESSEL HAVING A PASSAGEWAY EXTENDING VERTICALLY THERETHROUGH ADAPTED TO HAVE SAID THERMOPLASTIC MATERIAL SUSPENDED THEREIN; MEANS FOR HEATING SAID VESSEL; THERMOSTAT MEANS RESPONSIVE TO THE TEMPERATURE IN THE INTERIOR OF SAID VESSEL FOR CONTROLLING SAID HEATING MEANS AND MAINTAINING A SUBSTANTIALLY CONSTANT TEMPERATURE IN SAID VESSEL; MEANS FOR INSULATING SAID VESSEL; A BASE MEMBER; MEANS FOR FIXING SAID HEATING VESSEL IN A VERTICAL POSITION ABOVE SAID BASE MEMBER; TIME REGISTERING MEANS; MEANS RESPONSIVE TO THE INTRODUCING OF SAID THERMOPLASTIC MATERIAL INTO SAID PASSAGEWAY FOR STARTING SAID TIME REGISTERING MEANS; AND MEANS FOR STOPPING SAID TIME REGISTERING MEANS ACTUATED BY THE FALLING OF SAID THERMOPLASTIC MATERIAL THROUGH SAID PASSAGEWAY.
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) | 1959-01-09 | 1959-07-11 | 1960-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-09 | 1963-07-11 | 1964-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-09 | 1967-07-11 | 1968-01-10 | $7700.00 | Window Closed / Lapsed |