US4556837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic clinical thermometer
Assignee: Terumo Corp
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Filing: 1983-03-16
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Granted: 1985-12-03
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Expires: 2003-03-16
Abstract
Abstract An electronic clinical thermometer comprises a circuit for measuring and displaying the temperature of a portion being measured, a secondary battery for supplying electric power to the circuit, rectifier means connected to the secondary battery, a power receiving coil connected to the rectifier means for inducing a voltage in response to a change in an external magnetic field applied to the power receiving coil, and a hollow bar-shaped casing housing the circuit, the secondary battery, the rectifier means, and the power receiving coil. The secondary battery can be charged efficiently through the power receiving coil in response to the change in the external magnetic field. An apparatus for charging the electronic clinical thermometer comprises container means having a cylindrical cavity for accommodating a plurality of electronic clinical thermometers, a power transmitting coil disposed around the cylindrical cavity, and a.c. supply means for supplying an alternating current to the power transmitting coil, whereby the secondary battery can be charged by exciting the power receiving coil through inductive coupling between the power transmitting and receiving coils with the power transmitting coil positioned closely to the power receiving coil in the electronic clinical thermometer that is accommodated in the cylindrical cavity.
Inventors
- 👤 Susumu Kobayashi
- 👤 Yutaka Muramoto
- 👤 Hideo Ishizaka
- 👤 Yoshinori Ishii
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:51
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/70; H02J50/00; H02J50/10; H02J50/40; H02J50/402; H02J7/731
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
229 words
A method of charging an electronic clinical thermometer having a secondary battery as a power supply, comprising the steps of: (a) placing at least one electronic clinical thermometer into a cylindrical cavity in charger means having a power transmitting coil disposed around said cylindrical cavity, said at least one electronic clinical thermometer comprising a circuit for measuring and displaying the temperature of a portion being measured and; a secondary battery for supplying electric power to said circuit; rectifier means connected to said secondary battery; a power receiving coil connected to said rectifier means for inducing a voltage in response to a change in an external magnetic field applied to the power receiving coil; and a hollow bar-shaped casing housing said circuit, said secondary battery, said rectifier means, and said power receiving coil; said power receiving coil having a longer diameter extending substantially parallel to a longitudinal direction of said bar-shaped casing; and said power transmitting coil of said charger means comprising a set of at least three coils disposed around said cylindrical cavity of said charger means at substantially equal angular intervals; (b) passing an alternating current through said power transmitting coil to enable said power transmitting coil to produce a revolving magnetic field for thereby generating a current flowing through said power receiving coil; and (c) charging said secondary battery with said generated current through said rectifier means.
Claim 2
Independent Claim
229 words
A method of charging an electronic clinical thermometer having a secondary battery as a power supply, comprising the steps of: (a) placing at least one electronic clinical thermometer into a cylindrical cavity in charger means having a power transmitting coil disposed around said cylindrical cavity, said at least one electronic clinical thermometer comprising a circuit for measuring and displaying the temperature of a portion being measured and; a secondary battery for supplying electric power to said circuit; rectifier means connected to said secondary battery; a power receiving coil connected to said rectifier means for inducing a voltage in response to a change in an external magnetic field applied to the power receiving coil; and a hollow bar-shaped casing housing said circuit, said secondary battery, said rectifier means, and said power receiving coil; said power receiving coil having a longer diameter extending substantially parallel to a longitudinal direction of said bar-shaped casing; and said power transmitting coil of said charger means comprising a set of at least three coils disposed around said cylindrical cavity of said charger means at substantially equal angular intervals; (b) passing an alternating current through said power transmitting coil to enable said power transmitting coil to produce a revolving magnetic field for thereby generating a current flowing through said power receiving coil; and (c) charging said secondary battery with said generated current through said rectifier means.
Claim 3
Independent Claim
164 words
An apparatus for charging an electronic clinical thermometer having a circuit for measuring and displaying the temperature of a portion being measured, a secondary battery for supplying electric power to the circuit rectifier means connected to the secondary battery, a power receiving coil connected to the rectifier means for inducing a voltage in response to a change in an external magnetic field applied to the power receiving coil, and a hollow bar-shaped casing housing the circuit, the secondary battery, the rectifier means, and the power receiving coil, said apparatus comprising: (a) container means having a cylindrical cavity for accommodating the electronic clinical thermometer; (b) a power transmitting coil comprising a set of at least three coils disposed around said cylindrical cavity at substantially equal angular intervals; and (c) a.c. supply means for supplying an alternating current to said power transmitting coil, whereby the secondary battery can be charged by exciting the power receiving coil through inductive coupling between the power transmitting and receiving coils.
Claim 4
Independent Claim
164 words
An apparatus for charging an electronic clinical thermometer having a circuit for measuring and displaying the temperature of a portion being measured, a secondary battery for supplying electric power to the circuit rectifier means connected to the secondary battery, a power receiving coil connected to the rectifier means for inducing a voltage in response to a change in an external magnetic field applied to the power receiving coil, and a hollow bar-shaped casing housing the circuit, the secondary battery, the rectifier means, and the power receiving coil, said apparatus comprising: (a) container means having a cylindrical cavity for accommodating the electronic clinical thermometer; (b) a power transmitting coil comprising a set of at least three coils disposed around said cylindrical cavity at substantially equal angular intervals; and (c) a.c. supply means for supplying an alternating current to said power transmitting coil, whereby the secondary battery can be charged by exciting the power receiving coil through inductive coupling between the power transmitting and receiving coils.
Claim 5
Dependent Claim
39 words
An apparatus according to claim 2, wherein said a.c. powr supply means includes means for supplying currents of different phases to the coils, respectively, of said power transmitting coil for generating a revolving magnetic field in said cylindrical cavity.
Claim 6
Independent Claim
117 words
An apparatus for charging an electronic clinical thermometer having a secondary battery as a power supply and a power receiving coil disposed at an axial position in the thermometer for supplying a charging current to said secondary battery, said apparatus comprising: (a) cylindrical container means having a space for allowing the electronic clinical thermometer accommodated substantially vertically therein to be inclined; (b) a supporting edge for supporting the electronic clinical thermometer accommodated obliquely in said cylindrical container means substantially in alignment with said power receiving coil; and (c) power transmitting coils disposed adjacent to said supporting edge at spaced intervals, whereby mutual inductance with low statistical dispersion can be formed between said power transmitting and receiving coils.
Claim 7
Independent Claim
117 words
An apparatus for charging an electronic clinical thermometer having a secondary battery as a power supply and a power receiving coil disposed at an axial position in the thermometer for supplying a charging current to said secondary battery, said apparatus comprising: (a) cylindrical container means having a space for allowing the electronic clinical thermometer accommodated substantially vertically therein to be inclined; (b) a supporting edge for supporting the electronic clinical thermometer accommodated obliquely in said cylindrical container means substantially in alignment with said power receiving coil; and (c) power transmitting coils disposed adjacent to said supporting edge at spaced intervals, whereby mutual inductance with low statistical dispersion can be formed between said power transmitting and receiving coils.
Claim 8
Dependent Claim
46 words
An apparatus according to claim 4, wherein said container means has a cylindrical cavity having an upper opening defined by a peripheral edge, said supporting edge comprising by said peripheral edge, said power transmitting coils being wound at the spaced intervals closely to said upper opening.
Claim 9
Independent Claim
129 words
An apparatus for charging an electronic clinical thermometer having a secondary battery as a power supply and a power receiving coil disposed at an axial position in the thermometer for supplying a charging current to said secondary battery, said apparatus comprising: (a) cylindrical container means having a space for allowing the electronic clinical thermometer accommodated substantially vertically therein to be inclined; (b) an antiseptic solution for being contained in said cylindrical container means; (c) a supporting edge for supporting the electronic clinical thermometer accommodated obliquely in said cylindrical container means substantially in alignment with said power receiving coil; and (d) power transmitting coils disposed adjacent to said supporting edge at spaced intervals, whereby mutual inductance with low statistical dispersion can be formed between said power transmitting and receiving coils.
Claim 10
Independent Claim
129 words
An apparatus for charging an electronic clinical thermometer having a secondary battery as a power supply and a power receiving coil disposed at an axial position in the thermometer for supplying a charging current to said secondary battery, said apparatus comprising: (a) cylindrical container means having a space for allowing the electronic clinical thermometer accommodated substantially vertically therein to be inclined; (b) an antiseptic solution for being contained in said cylindrical container means; (c) a supporting edge for supporting the electronic clinical thermometer accommodated obliquely in said cylindrical container means substantially in alignment with said power receiving coil; and (d) power transmitting coils disposed adjacent to said supporting edge at spaced intervals, whereby mutual inductance with low statistical dispersion can be formed between said power transmitting and receiving coils.
Claim 11
Dependent Claim
26 words
An apparatus according to claim 6, wherein said container means has a cylindrical cavity for receiving therein a container to be filled with the antiseptic solution.
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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) | 1988-12-02 | 1989-06-03 | 1989-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-02 | 1993-06-03 | 1993-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-02 | 1997-06-03 | 1997-12-03 | $7700.00 | Window Closed / Lapsed |