US3487146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for dip molding articles having portions of increased thickness
Assignee: Tillotson Corp
•
Filing: 1966-03-14
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Granted: 1969-12-30
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Expires: 1986-03-14
Abstract
No abstract record available.
Inventors
- 👤 Neil E Tillotson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:46
CPC Classifications
B; B29; B29C; B29C41/00; B29C41/02; B29C41/14; B29L; B29L2031/00; B29L2031/48; B29L2031/4842; B29L2031/4864
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
IN THE PROCESS OF MAKING A DIP-MOLDED THIN PLASTIC GLOVE IN WHICH HEATED MOLD FORM IS IMMERSED INTO A HEAT HARDENABLE PLASTIC FORMING LIQUID, THE METHOD OF FORMING A BAND OF INCREASED THICKNESS WHICH COMPRISES UTILIZING A MOLD HAVING A HIGH VOLUME SPECIFIC HEAT, OF AT LEAST 0.45, AND A LOW CONDUCTIVITY, BETWEEN 0.001 AND 0.01, HEATING ALL OF SAID MOLD TO A FIRST ELEVATED TEMPERATURE, IMMERSING SAID MOLD UP TO THE LOWER EDGE OF SAID BAND IN A COOLING MEDIUM, AND THEN DIPPING SAID MOLD INCLUDING SAID BAND INTO SAID HEAT HARDENABLE PLASTIC-FORMING LIQUID UNTIL A FILM OF PLASTIC IS FORMED ON THE SURFACE THEREOF WHEREBY THE PORTION ADJACENT TO SAID BAND IS OF INCREASED THICKNESS, CURING SAID PLASTIC, AND STRIPPING THE GLOVE FROM THE MOLD.
Claim 2
Dependent Claim
127 words
IN THE PROCESS OF MAKING A DIP-MOLDED THIN PLASTIC GLOVE IN WHICH HEATED MOLD FORM IS IMMERSED INTO A HEAT HARDENABLE PLASTIC FORMING LIQUID, THE METHOD OF FORMING A BAND OF INCREASED THICKNESS WHICH COMPRISES UTILIZING A MOLD HAVING A HIGH VOLUME SPECIFIC HEAT, OF AT LEAST 0.45, AND A LOW CONDUCTIVITY, BETWEEN 0.001 AND 0.01, HEATING ALL OF SAID MOLD TO A FIRST ELEVATED TEMPERATURE, IMMERSING SAID MOLD UP TO THE LOWER EDGE OF SAID BAND IN A COOLING MEDIUM, AND THEN DIPPING SAID MOLD INCLUDING SAID BAND INTO SAID HEAT HARDENABLE PLASTIC-FORMING LIQUID UNTIL A FILM OF PLASTIC IS FORMED ON THE SURFACE THEREOF WHEREBY THE PORTION ADJACENT TO SAID BAND IS OF INCREASED THICKNESS, CURING SAID PLASTIC, AND STRIPPING THE GLOVE FROM THE MOLD.
References Cited (Backward Citations)
CA563042A
Cited
US1998896A
Cited
US2670337A
Cited
US2588571A
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US2786238A
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US3256564A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |