Patent US4296633A successfully refreshed from Google Patents.
US4296633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for temperature measurement
Assignee: CHAFON MEDICAL A CORP OF SWEDEN AB
•
Filing: 1979-06-01
•
Granted: 1981-10-27
•
Expires: 1999-06-01
Abstract
Abstract The invention relates to a device for temperature measurements, comprising a temperature-sensitive sensor whose electrical properties, e.g. resistance, vary with the temperature, e.g. a thermistor, and which via two contacts is connected to two electric conductors arranged on a support, which electric conductors in turn can be connected to a reading unit for the reading of the actual values of current, voltage or the like corresponding to the temperature. In a preferred embodiment the said electric conductors are in the form of two metal layers on both sides of a support made of plastics. The one metal layer is interrupted by a gap which is arranged to be bridged by the sensor, one contact of which is connected to each conductor.
Inventors
- 👤 Hakan B. Hakansson
- 👤 Lennart P. E. Persson
- 👤 Berth-Ove G. Wall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:40
CPC Classifications
G; G01; G01K; G01K7/00; G01K7/16; G01K7/22; G01K7/223; G01K13/00; G01K13/20
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
137 words
A device for temperature measurement comprising a temperature-sensitive sensor (1), whose electrical properties, e.g. the resistance, vary with the temperature, e.g. a thermistor, and which is connected via two contacts (3, 4) to two electric conductors (9,10) arranged on a support (7), characterized in that the two electric conductors (9,10) are arranged on both sides of the support (7) which is in the form of an elongated strip and that the one conductor (9) extends directly or via a suitable extension (11) over one edge of the support (7) in the direction towards the other conductor (10) but without reaching as far as the same thus forming a gap, slit or the like (12) which is arranged so that it is bridged by the sensor (1) one contact (3,4) of which is connected to each conductor (9,10).
Claim 2
Independent Claim
137 words
A device for temperature measurement comprising a temperature-sensitive sensor (1), whose electrical properties, e.g. the resistance, vary with the temperature, e.g. a thermistor, and which is connected via two contacts (3, 4) to two electric conductors (9,10) arranged on a support (7), characterized in that the two electric conductors (9,10) are arranged on both sides of the support (7) which is in the form of an elongated strip and that the one conductor (9) extends directly or via a suitable extension (11) over one edge of the support (7) in the direction towards the other conductor (10) but without reaching as far as the same thus forming a gap, slit or the like (12) which is arranged so that it is bridged by the sensor (1) one contact (3,4) of which is connected to each conductor (9,10).
Claim 3
Dependent Claim
80 words
A device in accordance with claim 1 where the support (7) is constituted of a thin strip (8) of plastics or similar electrically insulating the said conductors being arranged as thin metal coatings (9,10) on opposite plane surfaces of the strip (8), characterized in that the said gap (12) is provided transversely to the longitudinal direction of the strip (8) in the form of a cut (12) in the one metal coating (10) near one end of the strip (8).
Claim 4
Dependent Claim
105 words
A device in accordance with claim 1, where the support (7a) is constituted of a thin strip (8a) of plastics or similar electrically insulating material with the said conductors arranged as thin metal coatings (9a,10a) on opposite plane surfaces of the strip (8a), characterized in that one metal coating (10a) does not reach as far as the one edge of the strip (8a), whilst the other metal coating (9a) overlaps this edge and is folded around the same, the said gap, slit or the like (12a) being formed between the two coatings (9a and 10a) as they do not reach as far as each other.
Claim 5
Independent Claim
41 words
A device in accordance with any one of the preceding claims, characterized in that the sensor (1) is provided with a third contact (5) especially intended for trimming on the side remote from the support which is especially designed for trimming:
Claim 6
Dependent Claim
43 words
A device in accordance with claim 1, characterized in that the support (7), which is in the form of an elongated strip, is supported in turn by a somewhat broader strip (13) of a preferably semirigid material such as cardboard or the like.
Claim 7
Dependent Claim
34 words
A device in accordance with claim 5, characterized in that the sensor and the connecting contacts (3,4,5) are located fully within the surface (17) of the broader strip (13) which carries the support (7).
Claim 8
Dependent Claim
30 words
A device in accordance with claim 5, characterized in that the end of the support (7) opposite the sensor (1) projects beyond the one end of the broader strip (13).
Claim 9
Dependent Claim
25 words
A device in accordance with claim 5, characterized in that the somewhat broader strip (13) consists of a cardboard coated on both sides with plastics.
Claim 10
Independent Claim
53 words
A device in accordance with any one of claims 5-8, characterized in that the sensor (1), the connecting contacts (3,4,5) and at least the nearest part of the electric conductors (9,10) are covered by means of a plastic layer which in a tight manner enwraps these parts to the somewhat broader strip (13).
Claim 11
Dependent Claim
26 words
A device in accordance with claim 1, characterized in that it is sterilized and packed in a sterile manner and is thus ready for medical use.
Claim 12
Dependent Claim
90 words
A temperature-sensitive instrument, comprising: a temperature-sensitive sensor having electric properties which vary with temperature and having first and second electric contacts; a support member including first and second electric conductors disposed on at least two surfaces of said support member for connection to a reading unit for reading values corresponding to temperature; a gap on said support member between said first and second electric conductors; and said sensor bridging said gap with said first contact connected to said first conductor and with said second contact connected to said second conductor.
Claim 13
Dependent Claim
90 words
A temperature-sensitive instrument, comprising: a temperature-sensitive sensor having electric properties which vary with temperature and having first and second electric contacts; a support member including first and second electric conductors disposed on at least two surfaces of said support member for connection to a reading unit for reading values corresponding to temperature; a gap on said support member between said first and second electric conductors; and said sensor bridging said gap with said first contact connected to said first conductor and with said second contact connected to said second conductor.
Claim 14
Dependent Claim
30 words
A temperature-sensitive instrument in accordance with claim 11, wherein said support member includes opposite planar surfaces, and said first and second conductors are arranged on said opposite planar surfaces, respectively.
Claim 15
Dependent Claim
32 words
A temperature-sensitive instrument in accordance with claim 12, wherein said support member is an elongated strip formed of insulating material and is covered with metal to form said first and second conductors.
Claim 16
Dependent Claim
32 words
A temperature-sensitive instrument in accordance with claim 11, wherein said support member is an elongated strip, and said gap extends in a transverse direction to the longitudinal axis of said elongated strip.
Claim 17
Dependent Claim
30 words
A temperature-sensitive instrument in accordance with claim 14, wherein said gap is a cutout formed in one of said first and second conductors adjacent one end of said elongated strip.
Claim 18
Dependent Claim
44 words
A temperature-sensitive instrument in accordance with claim 12, wherein said first conductor is shorter than said support member, and said second conductor extends around the edge of said support member and terminates at a point spaced from said first conductor to form said gap.
Claim 19
Dependent Claim
26 words
A temperature-sensitive instrument in accordance with claim 11, wherein said temperature-sensitive sensor includes a third contact for trimming to change the electric property of said sensor.
Claim 20
Dependent Claim
22 words
A temperature-sensitive instrument in accordance with claim 11, wherein said support member is supported by a second support member of semirigid material.
Claim 21
Dependent Claim
34 words
A temperature-sensitive instrument in accordance with claim 11, wherein said temperature-sensitive sensor is a thermistor, and wherein said first and second electric contacts are positioned at spaced-apart points on one surface of said thermistor.
Claim 22
Dependent Claim
32 words
A temperature-sensitive instrument in accordance with claim 11, wherein said support member is formed of plastic insulating material having thin metal coatings deposited thereon to form said first and second electric conductors.
Claim 23
Dependent Claim
28 words
A temperature-sensitive instrument in accordance with claim 18, wherein said second support member is formed of cardboard material and is coated on opposite sides thereof with plastic material.
References Cited (Backward Citations)
GB522660A
Cited
US3064222A
Cited
US3188594A
Cited
US3646494A
Cited
US3833145A
Cited
US3872419A
Cited
DE2448455A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-10-26 | 1985-04-27 | 1985-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-26 | 1989-04-27 | 1989-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-26 | 1993-04-27 | 1993-10-27 | $7700.00 | Window Closed / Lapsed |