Patent US4389560A successfully refreshed from Google Patents.
US4389560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lasers
Assignee: Individual
•
Filing: 1981-04-10
•
Granted: 1983-06-21
•
Expires: 2001-04-10
Abstract
Abstract This invention is the new use of a Laser light beam directed into a metal fire pot as the combined heater element causing oxidation of the metal fire pot, for a heating system.
Inventors
- 👤 Wilbur A. E. Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:48
CPC Classifications
C; C23; C23C; C23C8/00; C23C8/06; C23C8/08; C23C8/10; B; B23; B23K; B23K26/00; B23K26/352
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
126 words
In combination, a laser heater enclosed furnace having, an iron heater fire pot therein, an operable electrically controlled laser light of upwards of 20,000 watts associated with the fire pot and adapted on light operation to project its light beam into the fire pot, a reflector mirror within the fire pot in position and adapted to reflect the laser light beam within the fire pot on laser operation, temperature electric control means internally and exteriorly of the furnace and exteriorly of the fire pot for electrically controlling operation of the laser light, whereby, upon operation of the laser light, that light is absorbed by the iron fire pot and the fire pot is oxidized and heated proportionally to the laser light wattage and duration of operation.
Claim 2
Dependent Claim
126 words
In combination, a laser heater enclosed furnace having, an iron heater fire pot therein, an operable electrically controlled laser light of upwards of 20,000 watts associated with the fire pot and adapted on light operation to project its light beam into the fire pot, a reflector mirror within the fire pot in position and adapted to reflect the laser light beam within the fire pot on laser operation, temperature electric control means internally and exteriorly of the furnace and exteriorly of the fire pot for electrically controlling operation of the laser light, whereby, upon operation of the laser light, that light is absorbed by the iron fire pot and the fire pot is oxidized and heated proportionally to the laser light wattage and duration of operation.
Claim 3
Dependent Claim
95 words
In combination, a heater having an enclosure and an iron heater fire pot therein, an operable laser light beam unit of upwards from 5 watts to 20,000 watts associated with the fire pot and adapted on operation to project a laser light beam into the fire pot, and temperature control means associated with the fire pot and adapted for electrically controlling operation of the laser unit, whereby upon laser unit light beam operation its light beam projected into the fire pot is absorbed by the pot and thereby oxidation heating of the fire pot occurs.
Claim 4
Dependent Claim
95 words
In combination, a heater having an enclosure and an iron heater fire pot therein, an operable laser light beam unit of upwards from 5 watts to 20,000 watts associated with the fire pot and adapted on operation to project a laser light beam into the fire pot, and temperature control means associated with the fire pot and adapted for electrically controlling operation of the laser unit, whereby upon laser unit light beam operation its light beam projected into the fire pot is absorbed by the pot and thereby oxidation heating of the fire pot occurs.
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) | 1986-06-20 | 1986-12-20 | 1987-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-20 | 1990-12-20 | 1991-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-20 | 1994-12-20 | 1995-06-21 | $7700.00 | Window Closed / Lapsed |