US5072181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Angle position transmitter having a static magnetic field sensor and a magnet on the transmitter shaft for detecting a full revolution of the transmitter shaft
Assignee: Siemens AG
•
Filing: 1987-12-15
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Granted: 1991-12-10
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Expires: 2007-12-15
Abstract
Abstract In an angle position transmitter with a photoelectrically scannable transmitter disc and doubly supported transmitted shaft, the angle position transmitter determines the angle position of a rotary machine element so as to indicate absolute position with less than a full revolution. The measuring range is increased several times without adversely affecting the compact design of the angle position transmitter which is already limited by the need for a double support of the transmitter shaft. A magnet revolving with the transmitter shaft signals full revolutions of the transmitter shaft at a stationary magnetic field sensor. The full rotations are counted in a revolution counter. A sign is determined by the direction of motion. The magnet rotates in the dead space between two antifriction bearings of a transmitter shaft. The angle position transmitter is particularly well suited for use in machine tools, robots and motor vehicles.
Inventors
- 👤 Wilheim Burger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:29
CPC Classifications
B; B60; B60C; B60C23/00; B60C23/06; B60C23/061; G; G01; G01D; G01D5/00; G01D5/26; G01D5/32; G01D5/34; G01D5/347; G01D5/3473; G01D5/34738; G01D2205/00; G01D2205/20; G01D2205/26
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
110 words
An angle position transmitter for determining a position angle for a rotatable machine, comprising: a transmitter shaft for transmitting rotary motion from the machine part; a photoelectrically scannable transmitter disc mounted on said transmitter shaft, for detecting the angle position of the shaft within one revolution; at least two anti-friction bearings positioned along said transmitter shaft supporting said shaft; at least one magnet arranged on said transmitter shaft between said bearings so as to rotate with said transmitter shaft and make full rotations; and at least one stationary magnetic field sensor for detecting a full revolution of said magnet and indicating the direction of the rotation of said transmitter shaft.
Claim 2
Dependent Claim
110 words
An angle position transmitter for determining a position angle for a rotatable machine, comprising: a transmitter shaft for transmitting rotary motion from the machine part; a photoelectrically scannable transmitter disc mounted on said transmitter shaft, for detecting the angle position of the shaft within one revolution; at least two anti-friction bearings positioned along said transmitter shaft supporting said shaft; at least one magnet arranged on said transmitter shaft between said bearings so as to rotate with said transmitter shaft and make full rotations; and at least one stationary magnetic field sensor for detecting a full revolution of said magnet and indicating the direction of the rotation of said transmitter shaft.
Claim 3
Dependent Claim
32 words
An angle position transmitter as claimed in claim 1, wherein said stationary magnetic field sensor is chosen from the group consisting of a Wiegand sensor, a pulse wire or a reed contact.
Claim 4
Dependent Claim
28 words
An angle position transmitter as claimed in claim 1 further comprising a bearing housing enclosing said bearings, said bearing housing including a chamber receiving said magnetic field sensor.
Claim 5
Dependent Claim
65 words
An angle position transmitter as claimed in claim 1, further comprising: outer bearing rings for said bearings; and a thin stationary tensioning sleeve positioned between said outer bearing rings and between said magnet and said stationary magnetic field sensor, said tensioning sleeve being magnetically permeable and positioned such that said magnet rotates at the smallest practical distance from an inside wall of said tensioning sleeve.
Claim 6
Dependent Claim
39 words
An angle position transmitter as claimed in claim 1, further comprising a setting magnet for said stationary magnetic-field sensor that rotates with said transmitter shaft, having a polarity which is opposite to said magnet arranged on said transmitter shaft.
Claim 7
Dependent Claim
51 words
An angle position transmitter as claimed in claim 1, further comprising a bidirectional revolution counter that is connected to said stationary magnetic field sensor to count the full rotations of the magnet and generate an output signal in response thereto, said output signal being indicative of the direction of said rotation.
References Cited (Backward Citations)
GB1026535A
Cited
US3345812A
Cited
GB1274308A
Cited
GB1386020A
Cited
US3870911A
Cited
GB1453728A
Cited
GB1484796A
Cited
US4174641A
Cited
US4259637A
Cited
US4228396A
Cited
US4392375A
Cited
US4321495A
Cited
US4448275A
Cited
WO1982003628A1
Cited
US4432253A
Cited
US4466189A
Cited
US4591788A
Cited
US4570118A
Cited
US4459750A
Cited
US4596953A
Cited
US4646088A
Cited
JPS59158604A
Cited
DE3408478C1
Cited
US4703262A
Cited
JPS60244559A
Cited
US4667156A
Cited
US4724710A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-12-09 | 1995-06-10 | 1995-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-09 | 1999-06-10 | 1999-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-09 | 2003-06-10 | 2003-12-10 | $7700.00 | Window Closed / Lapsed |