Patent US3904529A successfully refreshed from Google Patents.
US3904529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas discharge apparatus
Assignee: LFE Corp
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Filing: 1974-04-24
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Granted: 1975-09-09
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Expires: 1994-04-24
Abstract
Abstract The admission of a gas to a reaction chamber which has been previously evacuated is followed by its excitation by either a high-frequency electrostatic field or an electromagnetic field, formed by capacitor plates or a coil, respectively, which envelops the outer wall of the reaction chamber. A perforated metallic cylinder is disposed within the chamber concentrically with the long axis of the chamber and comprises the materialhandling zone of the chamber. The activated gas reacts with material placed within the perforated cylinder, during which reaction inactive gas and resultant gaseous byproducts are continuously withdrawn. The construction of the chamber and the internal perforated metallic cylinder are such as to provide very uniform distribution of gaseous excited species throughout the entire material-processing volume within the cylinder thereby promoting very uniform chemical conversions of practical interest.
Inventors
- 👤 Adir Jacob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:33
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/84; G01N21/88; D; D04; D04B; D04B35/00; D04B35/10; D04B35/18
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
134 words
APPARUTUS FOR DETECTING DEFECTS OF NEEDLES FOR A CIRCULAR KNITTING MACHINE COMPRISING COMPONENTS INCLUDING HOOKS AND LATCH PORTIONS OF DIAL AND CYLINDERS NEEDLES, COMPRISING A LIGHT SOURCE, AN OPTICAL FIBER HAVING AN END DISPOSED TO DETECT LIGHT REFLECTIONS OF SAID LIGHT SOURCE FROM AT LEAST ONE OF SAID COMPONENTS MOUNTED ON THE CIRCULAR KNITTING MACHINE, A LIGHT RECEIVER UNIT OPERATIVELY COUPLED TO THE OTHER END OF SAID OPTICAL FIBER AND INCLUDING A PHOTO-ELECTRIC CONVERTER ELEMENT FOR PRODUCING AN OUTPUT SIGNAL, AND AN ELECTRICAL CIRCUIT FOR RECEIVING AND TRANSFORMING A VARIATION IN SAID OUTPUT SIGNAL REPRESENTATIVE OF SAID LIGHT REFLECTIONS PRODUCED BY SAID LIGHT RECEIVER UNIT INTO A CORRESPONDING VARIATION OF AN ELECTRICAL SIGNAL, WHEREBY A POSSIBLE DEFECT OF SAID COMPONENT IS DETECTED TO THEREBY PREVENT KNITTING DEFECTS FROM BEING PRODUCED IN THE KNITTED WEB.
Claim 2
Dependent Claim
134 words
APPARUTUS FOR DETECTING DEFECTS OF NEEDLES FOR A CIRCULAR KNITTING MACHINE COMPRISING COMPONENTS INCLUDING HOOKS AND LATCH PORTIONS OF DIAL AND CYLINDERS NEEDLES, COMPRISING A LIGHT SOURCE, AN OPTICAL FIBER HAVING AN END DISPOSED TO DETECT LIGHT REFLECTIONS OF SAID LIGHT SOURCE FROM AT LEAST ONE OF SAID COMPONENTS MOUNTED ON THE CIRCULAR KNITTING MACHINE, A LIGHT RECEIVER UNIT OPERATIVELY COUPLED TO THE OTHER END OF SAID OPTICAL FIBER AND INCLUDING A PHOTO-ELECTRIC CONVERTER ELEMENT FOR PRODUCING AN OUTPUT SIGNAL, AND AN ELECTRICAL CIRCUIT FOR RECEIVING AND TRANSFORMING A VARIATION IN SAID OUTPUT SIGNAL REPRESENTATIVE OF SAID LIGHT REFLECTIONS PRODUCED BY SAID LIGHT RECEIVER UNIT INTO A CORRESPONDING VARIATION OF AN ELECTRICAL SIGNAL, WHEREBY A POSSIBLE DEFECT OF SAID COMPONENT IS DETECTED TO THEREBY PREVENT KNITTING DEFECTS FROM BEING PRODUCED IN THE KNITTED WEB.
Claim 3
Dependent Claim
37 words
The apparatus of claim 1 wherein said reaction chamber has a generally cylindrical shape and wherein said means for forming a gaseous plasma within said chamber includes a coil disposed about the outer wall of said chamber.
Claim 4
Dependent Claim
40 words
The apparatus of claim 1 wherein said reaction chamber has a generally cylindrical shape and wherein said means for forming a gaseous plasma within said chamber includes a pair of capacitor plates disposed on the outer wall of said chamber.
Claim 5
Dependent Claim
23 words
The apparatus of claim 1 wherein said metallic structure is coated with a material unaffected by excited gaseous species formed within said chamber.
Claim 6
Dependent Claim
13 words
The apparatus of claim 1 wherein said metallic structure comprises a cylindrical screen.
Claim 7
Dependent Claim
128 words
Apparatus for reacting a gas with a material in the influence of an rf electromagnetic field comprising: an evacuable reaction chamber having a generally cylindrical shape, closure means at one end of said chamber for introducing material to be modified by reaction into said chamber and for removing modified material from said chamber, means for introducing a gas within said chamber, means for withdrawing the gas from said chamber, means including a coil disposed about the outer wall of said chamber for forming an rf electromagnetic field within said chamber, and a perforated metallic cylinder coaxially disposed within said chamber, said perforated metallic cylinder providing a material processing zone therewithin substantially unaffected by nonuniformly distributed and field-perturbed gaseous ionized species formed within said chamber external of said cylinder.
Claim 8
Dependent Claim
128 words
Apparatus for reacting a gas with a material in the influence of an rf electromagnetic field comprising: an evacuable reaction chamber having a generally cylindrical shape, closure means at one end of said chamber for introducing material to be modified by reaction into said chamber and for removing modified material from said chamber, means for introducing a gas within said chamber, means for withdrawing the gas from said chamber, means including a coil disposed about the outer wall of said chamber for forming an rf electromagnetic field within said chamber, and a perforated metallic cylinder coaxially disposed within said chamber, said perforated metallic cylinder providing a material processing zone therewithin substantially unaffected by nonuniformly distributed and field-perturbed gaseous ionized species formed within said chamber external of said cylinder.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |