US Patent No: 5,514,955
Number of patents in Portfolio can not be more than 2000
Slim profile digital tachometer including planar block and rotor having spokes and clamp
Stats
-
May 7, 1996
Issued date -
Mar 11, 1994
filing date -
08/223,512
serial no -
Expired
status
Importance
Loading Importance Indicators...
Abstract
A magneto-resistive tachometer includes an enclosure having a thickness of about 3/4", formed with a central through opening therein and a plurality of bolt holes sized and located for alignment with bolt holes on a standard NEMA C-type motor end face. The enclosure has a recess formed adjacent the central through opening and adapted to receive a sensor electronics package, and a radial slot formed between the central through opening and the recess for receiving a sensing element. An associated sensor drum has a peripheral surface with encoded sensor patterns thereon adapted to be sensed by the sensing element, and a center hub connected to the peripheral surface by a plurality of spokes. The center hub is adapted for clamping engagement with the output shaft of the motor within the center opening of the enclosure, in radially adjacent position relative to the sensing element. At least one of the spokes is provided with shaft clamping means for securing the drum to the output shaft of the motor.
Loading the Abstract Image...
First Claim
Related Publications
Loading Related Publications...
International Classification(s)
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
|
|
|||
| 4,418,372 Magnetic rotary encoder | 27 | 1980 | |
| 4,853,632 Apparatus for magnetically detecting a position of a movable magnetic body | 32 | 1981 | |
| 4,639,807 Magnetic detector having magnetoresistive elements | 23 | 1983 | |
| 4,766,376 Magnetic position detector for detecting an absolute position of a movable member | 17 | 1986 | |
| 4,786,870 Magnetic sensor for magnetically detecting the position of a movable body | 16 | 1986 | |
| 4,816,948 Magneto-resistive head | 18 | 1987 | |
| 4,818,939 Apparatus for magnetically detecting position or speed or moving body utilizing bridge circuit with series connected MR elements | 30 | 1987 | |
| 4,874,053 Torque detecting apparatus | 53 | 1988 | |
| 5,019,776 Magnetic position detection apparatus having two magnetic recording medium tracks with magnetoresistors arranged in a bridge circuit so as to eliminate even order harmonic distortion | 22 | 1989 | |
|
|
|||
| 4,914,387 Magnetic speed sensor with an adaptive threshold circuit for use with a bearing assembly | 42 | 1988 | |
| 5,017,866 Magnetic field sensor mounting with sensor arm contacting rotating bearing member | 3 | 1990 | |
| 5,081,416 Magnetic encoder with retainer ring for retaining magnetic encoder ring on a rotating shaft | 13 | 1990 | |
|
|
|||
| 4,853,631 Magnetoresistive sensor having inter-leaved magnetoresistive elements for detecting encoded magnetic information | 13 | 1987 | |
| 4,866,382 Magnetic rotary encoder system having a multi-element magnetoresistive sensor | 20 | 1987 | |
|
|
|||
| 4,199,719 Instrument for measuring the speed in RPM of a rotating gear | 21 | 1977 | |
| 4,383,303 Frequency signal conversion apparatus and method | 15 | 1980 | |
|
|
|||
| 5,293,125 Self-aligning tachometer with interchangeable elements for different resolution outputs | 27 | 1992 | |
| 5,336,994 Magneto-resistive tachometer assembly with reversible cover and related method | 1 | 1992 | |
|
|
|||
| 4,857,841 Proximity detector employing magneto resistive sensor in the central magnetic field null of a toroidal magnet | 19 | 1987 | |
| 4,914,389 Multiturn shaft position sensor with backlash compensation | 24 | 1988 | |
|
|
|||
| 4,274,053 Magnetic rotary encoder for detection of absolute values of angular displacement | 47 | 1979 | |
| 4,319,188 Magnetic rotary encoder for detection of incremental angular displacement | 69 | 1980 | |
|
|
|||
| 4,506,217 Gear tooth position and speed sensor with four, bridge circuit connected, magnetic resistance tracks | 30 | 1982 | |
| 4,712,064 Magnetoresistive sensor for detecting position or speed of a ferromagnetic body | 46 | 1986 | |
|
|
|||
| 4,617,484 Electric motor with a torsionally flexible rotor mount | 25 | 1985 | |
| 4,686,472 Magnetic sensor having closely spaced and electrically parallel magnetoresistive layers of different widths | 32 | 1986 | |
|
|
|||
| 5,041,784 Magnetic sensor with rectangular field distorting flux bar | 21 | 1989 | |
| 4,992,733 Position sensing transducer having a circular magnet with an integral flux distorting member and two magnetic field sensors | 20 | 1989 | |
|
|
|||
| 4,800,457 Magnetoresistive sensor element | 20 | 1987 | |
|
|
|||
| 4,922,197 High resolution proximity detector employing magnetoresistive sensor disposed within a pressure resistant enclosure | 50 | 1988 | |
|
|
|||
| 4,703,262 Mounting structure for spindle orientation magnetic sensor system | 6 | 1985 | |
|
|
|||
| 5,003,259 Magnetic monitoring device, particularly for monitoring the parameters of angular movement of rotating members having a peripheral irregularity | 8 | 1988 | |
|
|
|||
| 4,668,913 Constant flux magneto resistive magnetic reluctance sensing apparatus | 32 | 1985 | |
|
|
|||
| 4,851,771 Magnetic encoder for detection of incremental and absolute value displacement | 40 | 1988 | |
|
|
|||
| 4,988,220 Servicable wheel speed sensor assembly | 36 | 1990 | |
|
|
|||
| 4,262,251 Device for measuring rotational angle of rotary member | 31 | 1978 | |
|
|
|||
| 4,992,731 Rotary speed sensor with base line compensation of Hall cell output signal | 34 | 1989 | |
|
|
|||
| 4,350,952 Digital read-out meter circuit and tachometer with variable meter update rate using an up/down counter means | 13 | 1979 | |
|
|
|||
| 4,890,059 Digital tachometer with air gap adjusting yoke insertable through holes in the tachometer housing | 15 | 1988 | |
|
|
|||
| 4,642,496 Device for detecting the angular position of the rotor of a rotary electric machine with electronic switching | 51 | 1985 | |
|
|
|||
| 4,975,675 Device comprising at least one magneto-resistor contained in a housing | 8 | 1988 | |
|
|
|||
| 5,146,162 Engine speed measuring device with plural counters for averaging angular velocity | 3 | 1990 | |
|
|
|||
| 4,742,297 Programmable cycle meter | 14 | 1986 | |
|
|
|||
| 4,810,953 Electronic interface device between a sensor and a display unit | 12 | 1987 | |
|
|
|||
| 4,656,377 Tachogenerator having a magnetoresistance stator coil | 14 | 1985 | |
|
|
|||
| 5,231,597 Vehicle speed measuring method and apparatus | 15 | 1991 | |