GB1248975A - Creation of Inventions and Patents with Artificial Intelligence

GB1248975A – Improvements in and relating to rotation sensing devices
– Google Patents

GB1248975A – Improvements in and relating to rotation sensing devices
– Google Patents
Improvements in and relating to rotation sensing devices

Info

Publication number
GB1248975A

GB1248975A
GB5181968A
GB5181968A
GB1248975A
GB 1248975 A
GB1248975 A
GB 1248975A
GB 5181968 A
GB5181968 A
GB 5181968A
GB 5181968 A
GB5181968 A
GB 5181968A
GB 1248975 A
GB1248975 A
GB 1248975A
Authority
GB
United Kingdom
Prior art keywords
transistor
rotation
capacitors
collector
current
Prior art date
1967-11-02
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Expired

Application number
GB5181968A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Panasonic Holdings Corp

Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1967-11-02
Filing date
1968-11-01
Publication date
1971-10-06

1968-11-01
Application filed by Matsushita Electric Industrial Co Ltd
filed
Critical
Matsushita Electric Industrial Co Ltd

1971-10-06
Publication of GB1248975A
publication
Critical
patent/GB1248975A/en

Status
Expired
legal-status
Critical
Current

Links

Espacenet

Global Dossier

Discuss

Classifications

G—PHYSICS

G01—MEASURING; TESTING

G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT

G01P13/00—Indicating or recording presence, absence, or direction, of movement

G—PHYSICS

G01—MEASURING; TESTING

G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT

G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds

G01P3/42—Devices characterised by the use of electric or magnetic means

G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed

G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage

Abstract

1,248,975. Measuring rotation electrically. MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd. Nov. 1, 1968 [Nov. 2, 1967], No. 51819/68. Heading G1N. A rotation sensor, Fig. 6, comprises a rotatable member 1 carrying a rotary single pole double throw switch 2-7, so that a capacitor 11 is alternately discharged (contacts 5 and 7 made) and charged (contacts 5 and 6 made) from a second capacitor 12, the resultant voltage step at point 17 switching-on a transistor 14 which is maintained in a conducting state by charging current for the series combination of capacitors 11 and 12 being drawn through its base, the consequent variation of collector current providing a measure of rotational speed on a device 15, or the switching transition may indicate a cessation of rotation when the device 15 is a warning lamp or a relay coil. An alternative embodiment Fig. 11 is solely to indicate presence or absence of rotation. Above a critical speed, charging current for one or other of the capacitors 33, 34 is drawn through the base electrode of a transistor 28 of which the collector potential maintains a second transistor 30 in a cut-off state thus rendering a warning device 15 in its collector lead inoperative. Below the critical speed the capacitors become fully charged so base current to transistor 28 ceases thereby cutting it off and turning transistor 30 on, the resultant collector current activating the device 15. A by-pass switch 32 renders the circuit inoperative. Figs. 1-5 and 8-10 (not shown) illustrate details of the switch construction.

GB5181968A
1967-11-02
1968-11-01
Improvements in and relating to rotation sensing devices

Expired

GB1248975A
(en)

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

JP7104967

1967-11-02

Publications (1)

Publication Number
Publication Date

GB1248975A
true

GB1248975A
(en)

1971-10-06

Family
ID=13449260
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

GB5181968A
Expired

GB1248975A
(en)

1967-11-02
1968-11-01
Improvements in and relating to rotation sensing devices

Country Status (7)

Country
Link

US
(1)

US3551691A
(en)

BE
(1)

BE723254A
(en)

CA
(1)

CA918275A
(en)

DE
(1)

DE1807267B2
(en)

FR
(1)

FR1603239A
(en)

GB
(1)

GB1248975A
(en)

NL
(1)

NL146291B
(en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

IT959890B
(en)

1972-06-22
1973-11-10
Pirelli

DEVICE FOR CHECKING THE CON TINUITY OF UNWINDING OF TAPE AND SIMILAR WIRES PARTICULARLY IN THE MANUFACTURE OF ELECTRIC CABLES

DK160359C
(en)

1986-11-14
1991-08-12
Herluf Jakob Larsen

LIGHTING FOR A BIKE

1968

1968-10-24
NL
NL6815231A
patent/NL146291B/en
unknown

1968-10-30
US
US3551691D
patent/US3551691A/en
not_active
Expired – Lifetime

1968-10-31
FR
FR1603239D
patent/FR1603239A/fr
not_active
Expired

1968-10-31
BE
BE723254D
patent/BE723254A/xx
unknown

1968-11-01
GB
GB5181968A
patent/GB1248975A/en
not_active
Expired

1968-11-01
CA
CA034071A
patent/CA918275A/en
not_active
Expired

1968-11-01
DE
DE19681807267
patent/DE1807267B2/en
active
Granted

Also Published As

Publication number
Publication date

FR1603239A
(en)

1971-03-22

DE1807267C3
(en)

1974-03-28

DE1807267A1
(en)

1969-08-07

BE723254A
(en)

1969-04-30

US3551691A
(en)

1970-12-29

NL6815231A
(en)

1969-05-06

DE1807267B2
(en)

1973-08-16

CA918275A
(en)

1973-01-02

NL146291B
(en)

1975-06-16

Contact information