US3372820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating arrangement for molding machines
Assignee: Loma Industries Inc
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Filing: 1965-10-22
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Granted: 1968-03-12
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Expires: 1985-10-22
Abstract
No abstract record available.
Inventors
- 👤 Louis H Barnett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:07
CPC Classifications
B; B29; B29C; B29C41/00; B29C41/34; B29C41/46; B22; B22D; B22D13/00; B22D13/10; B22D27/00; B22D27/04; B29C35/00; B29C35/02; B29C35/04; B29C41/02; B29C41/04; B29C41/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
189 words
A MOLD HEATING APPARATUS FOR USE IN A THERMOFUSION ROTATIONAL MOLDING MACHINE IN WHICH A MOLD IS SUPPORTED BY A FRAME FOR ROTATION ABOUT A FIRST AXIS AND THE FRAME AND MOLD ARE MOUNTED FOR ROTATION ABOUT AN AXIS PERPENDICULAR TO SAID FIRST AXIS INCLUDING: MEANS FOR HEATING A HEAT TRANSFER FLUID WITH SAID MEANS LOCATED REMOTELY FROM SAID MOLD, A HOUSING ATTACHED TO SAID FRAME AND DEFINING AN ENCLOSURE TO RECEIVE AT LEAST PART OF SAID MOLD, SAID HOUSING HAVING OUTER AND INNER WALLS DEFINING A PLENUM, A PLURALITY OF OPENINGS EXTENDING THROUGH SAID INNER WALLS FROM SAID PLENUM AND INTO SAID MOLD ENCLOSURE, AT LEAST ONE OPENING EXHAUSTING FROM SAID MOLD ENCLOSURE, A CONDUIT CONNECTED TO SAID PLENUM TO CONDUCT SAID HEAT TRANSFER FROM SAID HEATING MEANS INTO SAID PLENUM, SAID CONDUIT BEING FORMED AND ADAPTED TO MAINTAIN COMMUNICATION BETWEEN SAID HEATING MEANS AND SAID PLENUM DURING ROTATION OF SAID HOUSING WITH SAID FRAME AND MOLD, AND MEANS TO MOVE SAID HEAT TRANSFER FLUID FROM SAID HEATING MEANS THROUGH SAID CONDUIT, PLENUM AND INNER WALL OPENINGS, AGAINST SAID MOLD AND OUT OF SAID MOLD ENCLOSURE EXHAUST OPENING.
Claim 2
Dependent Claim
189 words
A MOLD HEATING APPARATUS FOR USE IN A THERMOFUSION ROTATIONAL MOLDING MACHINE IN WHICH A MOLD IS SUPPORTED BY A FRAME FOR ROTATION ABOUT A FIRST AXIS AND THE FRAME AND MOLD ARE MOUNTED FOR ROTATION ABOUT AN AXIS PERPENDICULAR TO SAID FIRST AXIS INCLUDING: MEANS FOR HEATING A HEAT TRANSFER FLUID WITH SAID MEANS LOCATED REMOTELY FROM SAID MOLD, A HOUSING ATTACHED TO SAID FRAME AND DEFINING AN ENCLOSURE TO RECEIVE AT LEAST PART OF SAID MOLD, SAID HOUSING HAVING OUTER AND INNER WALLS DEFINING A PLENUM, A PLURALITY OF OPENINGS EXTENDING THROUGH SAID INNER WALLS FROM SAID PLENUM AND INTO SAID MOLD ENCLOSURE, AT LEAST ONE OPENING EXHAUSTING FROM SAID MOLD ENCLOSURE, A CONDUIT CONNECTED TO SAID PLENUM TO CONDUCT SAID HEAT TRANSFER FROM SAID HEATING MEANS INTO SAID PLENUM, SAID CONDUIT BEING FORMED AND ADAPTED TO MAINTAIN COMMUNICATION BETWEEN SAID HEATING MEANS AND SAID PLENUM DURING ROTATION OF SAID HOUSING WITH SAID FRAME AND MOLD, AND MEANS TO MOVE SAID HEAT TRANSFER FLUID FROM SAID HEATING MEANS THROUGH SAID CONDUIT, PLENUM AND INNER WALL OPENINGS, AGAINST SAID MOLD AND OUT OF SAID MOLD ENCLOSURE EXHAUST OPENING.
Claim 3
Independent Claim
63 words
A METHOD FOR HEATING A MOLD THAT IS ROTATED ABOUT MUTUALLY PERPENDICULAR AXES COMPRISING THE STEPS OF: ENCLOSING A SUBSTANTIAL PART OF SAID MOLD, ROTATING SAID ENCLOSURE AND SAID MOLD AROUND ONE OF SAID AXES, INCREASING THE TEMPERATURE OF A HEAT TRANSFER FLUID AT A LOCATION REMOTE FROM SAID MOLD, AND CONDUCTING SAID HEATED TRANSFER FLUID TO SAID ENCLOSURE TO HEAT SAID MOLD.
Claim 4
Independent Claim
63 words
A METHOD FOR HEATING A MOLD THAT IS ROTATED ABOUT MUTUALLY PERPENDICULAR AXES COMPRISING THE STEPS OF: ENCLOSING A SUBSTANTIAL PART OF SAID MOLD, ROTATING SAID ENCLOSURE AND SAID MOLD AROUND ONE OF SAID AXES, INCREASING THE TEMPERATURE OF A HEAT TRANSFER FLUID AT A LOCATION REMOTE FROM SAID MOLD, AND CONDUCTING SAID HEATED TRANSFER FLUID TO SAID ENCLOSURE TO HEAT SAID MOLD.
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) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |