Patent US3603704A successfully refreshed from Google Patents.
US3603704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiant heat reflection in devices such as getter pumps
Assignee: SAES Getters SpA
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Filing: 1969-10-14
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Granted: 1971-09-07
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Expires: 1989-10-14
Abstract
Abstract A heat reflector having a number of discrete spaced surfaces which present a substantially continual heat-reflecting surface wherein adjacent surfaces are offset with respect to each other sufficiently to provide for the passage of gas molecules at pressures within the molecular flow region as well as at higher pressures. These reflectors which have a high conductance to gases are especially useful when employed with getter pumps wherein they minimize radiant heat losses and reduce the amount of current necessary to heat the getter material employed in these pumps.
Inventors
- 👤 Mario Zucchinelli
- 👤 Bruno Ferrario
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:11
CPC Classifications
H; H01; H01J; H01J7/00; H01J7/14; H01J7/18
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
40 words
A heat reflector having a high conductance to gases comprising a plurality of discrete spaced surfaces, the surfaces presenting a substantially continual heat-reflecting surface, adjacent surfaces being offset with respect to each other sufficiently to allow the passage of gas.
Claim 2
Dependent Claim
40 words
A heat reflector having a high conductance to gases comprising a plurality of discrete spaced surfaces, the surfaces presenting a substantially continual heat-reflecting surface, adjacent surfaces being offset with respect to each other sufficiently to allow the passage of gas.
Claim 3
Dependent Claim
50 words
A heat reflector having a high conductance to gases comprising a plurality of discrete spaced surfaces, the surfaces presenting a substantially continual heat-reflecting surface, adjacent edges of adjacent surfaces being offset with respect to one another sufficiently to allow the passage of gas in a straight path between adjacent surfaces.
Claim 4
Dependent Claim
50 words
A heat reflector having a high conductance to gases comprising a plurality of discrete spaced surfaces, the surfaces presenting a substantially continual heat-reflecting surface, adjacent edges of adjacent surfaces being offset with respect to one another sufficiently to allow the passage of gas in a straight path between adjacent surfaces.
Claim 5
Dependent Claim
53 words
A radiant heat reflector having a high conductance to gases comprising a plurality of strips having a heat reflective inner surface said strips being generally circularly disposed on at least two circles of different radii; adjacent strips being on different circles; the inner surfaces of all strips being substantially perpendicular to the radii.
Claim 6
Dependent Claim
53 words
A radiant heat reflector having a high conductance to gases comprising a plurality of strips having a heat reflective inner surface said strips being generally circularly disposed on at least two circles of different radii; adjacent strips being on different circles; the inner surfaces of all strips being substantially perpendicular to the radii.
Claim 7
Dependent Claim
19 words
The reflector of claim 3 wherein the ends of all strips are aligned on the circle of largest radius.
Claim 8
Dependent Claim
26 words
The reflector of claim 4 wherein the sum of the widths of the strips is equal to the circumference of the circle of the largest radius.
Claim 9
Dependent Claim
52 words
A cylindrical, radiant-heat reflector having a high conductance to gases comprising a plurality of planar strips having a heat reflective inner surface, said strips being circularly disposed as chords on two circles of different radii; alternate strips being on alternate circles; the heat-reflective surfaces of each strip being perpendicular to the radii.
Claim 10
Dependent Claim
52 words
A cylindrical, radiant-heat reflector having a high conductance to gases comprising a plurality of planar strips having a heat reflective inner surface, said strips being circularly disposed as chords on two circles of different radii; alternate strips being on alternate circles; the heat-reflective surfaces of each strip being perpendicular to the radii.
Claim 11
Dependent Claim
96 words
A radiant heat reflector having a high conductance to gases comprising: A. a first support; B. a second support; C. a series of straight strips fixedly attached at one end to the first support and at the other end to the second support; D. a series of offset strips fixedly attached at one end to the first support and at the other end to the second support; the offset strips being disposed between adjacent straight strips, whereby the straight strips and the offset strips present a continual heat-reflecting surface while permitting the passage of gas therebetween.
Claim 12
Dependent Claim
96 words
A radiant heat reflector having a high conductance to gases comprising: A. a first support; B. a second support; C. a series of straight strips fixedly attached at one end to the first support and at the other end to the second support; D. a series of offset strips fixedly attached at one end to the first support and at the other end to the second support; the offset strips being disposed between adjacent straight strips, whereby the straight strips and the offset strips present a continual heat-reflecting surface while permitting the passage of gas therebetween.
Claim 13
Dependent Claim
63 words
A cylindrical, radiant heat reflector of claim 7 wherein adjacent straight strips are spaced from one another and have an inner heat reflective surface; wherein the sides of the ends of the offset strips contact adjacent straight strips; each strip comprising two terminal segments each attached to two inwardly angled segments attached to a straight central segment leaving an inner heat reflective surface.
Claim 14
Dependent Claim
25 words
A getter pump comprising a substrate coated with a nonevaporable getter material, means for heating the nonevaporable getter material and means for reflecting radiant heat.
Claim 15
Dependent Claim
25 words
A getter pump comprising a substrate coated with a nonevaporable getter material, means for heating the nonevaporable getter material and means for reflecting radiant heat.
Claim 16
Dependent Claim
65 words
A getter pump of claim 9 wherein the means for reflecting radiant heat comprises a heat reflector having a high conductance to gases comprising a plurality of discretE spaced surfaces, the surfaces presenting a substantially continual heat reflecting surface, adjacent edges of adjacent surfaces being offset with respect to one another sufficiently to allow the passage of gases in a straight path between adjacent surfaces.
Claim 17
Dependent Claim
37 words
A getter pump comprising a circular pleated substrate coated with a nonevaporable getter material, means for heating the nonevaporable getter material and means for reflecting radiated heat said heat reflecting means substantially surrounding the circular pleated substrate.
Claim 18
Dependent Claim
37 words
A getter pump comprising a circular pleated substrate coated with a nonevaporable getter material, means for heating the nonevaporable getter material and means for reflecting radiated heat said heat reflecting means substantially surrounding the circular pleated substrate.
Claim 19
Dependent Claim
60 words
A getter pump comprising a substrate coated with a nonevaporable getter material, means for heating the nonevaporable getter material and a heat reflector having a high conductance to gases comprising a plurality of discrete spaced surfaces, the surfaces presenting a substantially continual heat-reflecting surface, adjacent surfaces being offset with respect to each other sufficiently to allow the passage of gas.
Claim 20
Dependent Claim
60 words
A getter pump comprising a substrate coated with a nonevaporable getter material, means for heating the nonevaporable getter material and a heat reflector having a high conductance to gases comprising a plurality of discrete spaced surfaces, the surfaces presenting a substantially continual heat-reflecting surface, adjacent surfaces being offset with respect to each other sufficiently to allow the passage of gas.
Claim 21
Dependent Claim
73 words
A getter pump comprising a substrate coated with a nonevaporable getter material, means for heating the nonevaporable getter material and a radiant heat reflector having a high conductance to gases comprising a plurality of strips having a heat reflective inner surface said strips being generally circularly disposed on at least two circles of different radii; adjacent strips being on different circles, the inner surfaces of all strips being substantially perpendicular to the radii.
Claim 22
Dependent Claim
73 words
A getter pump comprising a substrate coated with a nonevaporable getter material, means for heating the nonevaporable getter material and a radiant heat reflector having a high conductance to gases comprising a plurality of strips having a heat reflective inner surface said strips being generally circularly disposed on at least two circles of different radii; adjacent strips being on different circles, the inner surfaces of all strips being substantially perpendicular to the radii.
References Cited (Backward Citations)
US2482043A
Cited
US3214245A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |