Patent US4462020A successfully refreshed from Google Patents.
US4462020A
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Miniature resistive temperature detector and method of fabrication
Assignee: Intersil Corp
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Filing: 1981-08-25
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Granted: 1984-07-24
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Expires: 2001-08-25
Abstract
Abstract A miniature resistive temperature detector is fabricated by winding wire about a ceramic, or equivalent, cement coated graphite mandrel or form having a greater length than the resulting detector, coating the wire except for the lead portion with a ceramic, or equivalent, cement and cutting the wire and breaking the form to produce the miniature detector. A plurality of miniature detectors may be fabricated on a single form or mandrel with space between each detector to facilitate breaking.
Inventors
- 👤 E. Glenn May
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:33
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/04; H01C17/00; H01C17/04; H01C3/00; H01C3/14; H01C3/20; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49085
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
23 words
A resistive temperature detector comprising a coated cylindrical graphite form, a wire wound about said form and a ceramic cement covering said wire.
Claim 2
Dependent Claim
23 words
A resistive temperature detector comprising a coated cylindrical graphite form, a wire wound about said form and a ceramic cement covering said wire.
Claim 3
Dependent Claim
13 words
The resistive temperature detector according to claim 1 wherein said wire is platinum.
Claim 4
Dependent Claim
21 words
The resistive temperature detector according to claim 1 wherein said form has a length of less than one-tenth of an inch.
Claim 5
Dependent Claim
22 words
The resistive temperature detector according to claim 3 wherein said form has a diameter of less than five hundredths of an inch.
Claim 6
Independent Claim
77 words
A method of fabricating miniature resistive temperature detectors comprising wrapping wire about a portion of a coated cylindrical graphite form, said form being breakable substantially along a plane without being scribed, and said form having a substantially greater length than the length of the to be produced detector, coating said wire with ceramic cement except for lead portions of said wire, and breaking the wrapped form portion from the remainder of the form to produce said detector.
Claim 7
Independent Claim
77 words
A method of fabricating miniature resistive temperature detectors comprising wrapping wire about a portion of a coated cylindrical graphite form, said form being breakable substantially along a plane without being scribed, and said form having a substantially greater length than the length of the to be produced detector, coating said wire with ceramic cement except for lead portions of said wire, and breaking the wrapped form portion from the remainder of the form to produce said detector.
Claim 8
Dependent Claim
58 words
The method according to claim 5 including forming a plurality of miniature resistive temperature detectors by the process of wrapping said wire around said form, covering said wire with ceramic cement except for the lead portion of each detector, cutting said wire and breaking said form at a plurality of points to produce a plurality of miniature detectors.
Claim 9
Dependent Claim
29 words
The method according to claim 6 wherein said wrapping is performed to leave space between adjacent detectors on said form to facilitate cutting said wire and breaking said form.
Claim 10
Dependent Claim
23 words
The method according to claim 7 including measuring a predetermined length of wire and marking said measured length to facilitate cutting said wire.
Claim 11
Dependent Claim
33 words
The method according to claim 5 wherein said wire is selected to be hard drawn insulated wire and including the step of annealing said wire after it is coated with said ceramic cement.
Claim 12
Independent Claim
98 words
A method of fabricating miniature resistive temperature detectors comprising wrapping wire about a portion of a cylindrical form, said form being breakable at points along its length substantially along a plane perpendicular to its longitudinal axis, and said form having a substantially greater length than the length of the to be produced detector, coating said wrapped portion of said form with ceramic cement except for lead portions of said wire, and breaking the wrapped form portion from the remainder of the form to produce said detector without scribing said form subsequent to wrapping said form with said wire.
Claim 13
Independent Claim
98 words
A method of fabricating miniature resistive temperature detectors comprising wrapping wire about a portion of a cylindrical form, said form being breakable at points along its length substantially along a plane perpendicular to its longitudinal axis, and said form having a substantially greater length than the length of the to be produced detector, coating said wrapped portion of said form with ceramic cement except for lead portions of said wire, and breaking the wrapped form portion from the remainder of the form to produce said detector without scribing said form subsequent to wrapping said form with said wire.
Claim 14
Dependent Claim
58 words
The method according to claim 10 including forming a plurality of miniature resistive temperature detectors by the process of wrapping said wire around said form, covering said wire with ceramic cement except for the lead portion of each detector, cutting said wire and breaking said form at a plurality of points to produce a plurality of miniature detectors.
Claim 15
Dependent Claim
29 words
The method according to claim 11 wherein said wrapping is performed to leave space between adjacent detectors on said form to facilitate cutting said wire and breaking said form.
Claim 16
Dependent Claim
23 words
The method according to claim 12 including measuring a predetermined length of wire and marking said measured length to facilitate cutting said wire.
Claim 17
Dependent Claim
33 words
The method according to claim 10 wherein said wire is selected to be hard drawn insulated wire and including the step of annealing said wire after it is coated with said ceramic cement.
Claim 18
Dependent Claim
46 words
The method according to claim 10 wherein said form is a ceramic, said form being scribed at points along its length prior to being wrapped with said wire to facilitate breaking of said form substantially along a plane subsequent to being coated with said ceramic cement.
Claim 19
Dependent Claim
14 words
The resistive temperature detector according to claim 1 wherein said wire is platinum alloy.
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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) | 1987-07-24 | 1988-01-23 | 1988-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-24 | 1992-01-23 | 1992-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-24 | 1996-01-23 | 1996-07-24 | $7700.00 | Window Closed / Lapsed |