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Class Information
Number: 250/237G
Name: Radiant energy > Photocells; circuits and apparatus > Optical or pre-photocell system > Hoods, grating, baffles, diaphragms, masks > Gratings (moire fringes)
Description:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4136958 |
Encapsulated measuring apparatus |
Jan. 30, 1979 |
| 4135086 |
Automatic record player of linear tracking pickup arm type |
Jan. 16, 1979 |
| 4127772 |
Moire optical transducer |
Nov. 28, 1978 |
| 4127778 |
Optical correlator |
Nov. 28, 1978 |
| 4123653 |
Arrangement for detecting the angular position of a rotatable part |
Oct. 31, 1978 |
| 4117320 |
Digital measuring instruments |
Sep. 26, 1978 |
| 4115008 |
Displacement measuring apparatus |
Sep. 19, 1978 |
| 4113388 |
Optical apparatus for determining relative positioning of two members |
Sep. 12, 1978 |
| 4114035 |
Position encoder employing charge transfer circuit |
Sep. 12, 1978 |
| 4112295 |
Apparatus for direct measurement of displacements with a holographic scale |
Sep. 5, 1978 |
| 4103427 |
Electronic digital micrometer |
Aug. 1, 1978 |
| 4103998 |
Automatic alignment apparatus |
Aug. 1, 1978 |
| 4102577 |
Method of forming moire contour lines |
Jul. 25, 1978 |
| 4101764 |
Incremental measuring system |
Jul. 18, 1978 |
| 4100408 |
Signal generator for raster type scanners |
Jul. 11, 1978 |
| 4100420 |
Displacement transducers |
Jul. 11, 1978 |
| 4097875 |
Shaft encoder |
Jun. 27, 1978 |
| 4097150 |
Optical detection weighing system |
Jun. 27, 1978 |
| 4097734 |
Zero index for electro-optical measuring device |
Jun. 27, 1978 |
| 4095903 |
Measuring apparatus |
Jun. 20, 1978 |
| 4095348 |
Digital compass |
Jun. 20, 1978 |
| 4096384 |
Position transducer for machine tools and measuring machines |
Jun. 20, 1978 |
| 4091281 |
Light modulation system |
May. 23, 1978 |
| 4079251 |
Incremental optical encoder system for absolute position measurement |
Mar. 14, 1978 |
| 4079252 |
Photoelectric grating displacement measuring apparatus |
Mar. 14, 1978 |
| 4078173 |
Light amplitude control system for position and motion transducers |
Mar. 7, 1978 |
| 4074131 |
Apparatus for measuring or setting two-dimensional position coordinates |
Feb. 14, 1978 |
| 4065212 |
Inspection tool |
Dec. 27, 1977 |
| 4063086 |
Scale reading apparatus |
Dec. 13, 1977 |
| 4060903 |
Compensation of errors in incremental measuring or positioning instruments |
Dec. 6, 1977 |
| 4056722 |
Shaft position sensor |
Nov. 1, 1977 |
| 4051367 |
Measurement apparatus |
Sep. 27, 1977 |
| 4049965 |
Measurement apparatus |
Sep. 20, 1977 |
| 4047585 |
Scale optical detector with spring constant variation compensator |
Sep. 13, 1977 |
| 4047586 |
Zero load adjustment apparatus for spring weighing scale |
Sep. 13, 1977 |
| 4048492 |
Method and apparatus for automatic focusing an optical system with a scanning grating |
Sep. 13, 1977 |
| 4047025 |
Position indicating system and methods |
Sep. 6, 1977 |
| 4044847 |
Weighing system with a moire optoelectronic transducer |
Aug. 30, 1977 |
| 4039826 |
Magnetic head locating system for disk storage system |
Aug. 2, 1977 |
| 4037325 |
Linear glass scale height gage |
Jul. 26, 1977 |
| 4037969 |
Zone plate alignment marks |
Jul. 26, 1977 |
| 4037958 |
Apparatus for determining photoelectrically the position of at least one focusing plane of an image |
Jul. 26, 1977 |
| 4034403 |
Apparatus for positional control of a reading head in a device for reproducing optically coded video disk recordings |
Jul. 5, 1977 |
| 4032158 |
Method and apparatus for indicating angular displacement |
Jun. 28, 1977 |
| 4031595 |
High precision incremental distance measuring system |
Jun. 28, 1977 |
| RE29282 |
Measuring apparatus using the moire fringe concept of measurement |
Jun. 28, 1977 |
| RE29281 |
Measuring apparatus using the moire fringe concept of measurement |
Jun. 28, 1977 |
| 4025898 |
Recording representations of disrupted space patterns |
May. 24, 1977 |
| 4011446 |
Device for producing a signal indicating the directional movement required to achieve focus |
Mar. 8, 1977 |
| 4011435 |
Optical indicia marking and detection system |
Mar. 8, 1977 |
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