Inventor
ERNST ALFONS
DE49 patents
⚠️ This page may combine multiple inventors who share the name “ERNST ALFONS”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HEIDENHAIN GMBH DR JOHANNES
48 patentsUS4990767AFeb 5, 1991
Position measuring apparatus with multiple scanning locations
HEIDENHAIN GMBH DR JOHANNES67 citations96
US5548902AAug 27, 1996
Multi-coordinate probe
HEIDENHAIN GMBH DR JOHANNES19 citations93
US5509211AApr 23, 1996
Multi-coordinate probe
HEIDENHAIN GMBH DR JOHANNES35 citations93
US4972599ANov 27, 1990
Position measuring device with an adjusting device
HEIDENHAIN GMBH DR JOHANNES23 citations93
US4912856AApr 3, 1990
Position measuring device
HEIDENHAIN GMBH DR JOHANNES41 citations93
US4782229ANov 1, 1988
Photoelectric displacement measuring device for obtaining harmonic free signals
HEIDENHAIN GMBH DR JOHANNES41 citations93
US4700062AOct 13, 1987
Position measuring device with a scanned absolute scale
HEIDENHAIN GMBH DR JOHANNES30 citations93
US4602436AJul 29, 1986
Position measuring system
HEIDENHAIN GMBH DR JOHANNES36 citations93
US4564294AJan 14, 1986
Encapsulated photoelectric measuring system
HEIDENHAIN GMBH DR JOHANNES32 citations93
US4530159AJul 23, 1985
Multicoordinate sensing head
HEIDENHAIN GMBH DR JOHANNES45 citations93
US4495700AJan 29, 1985
Apparatus for measuring the angular displacement of two objects relative to each other
HEIDENHAIN GMBH DR JOHANNES35 citations93
US4477189AOct 16, 1984
Photoelectric incremental measuring device
HEIDENHAIN GMBH DR JOHANNES33 citations93
US4403859ASep 13, 1983
Photoelectric incremental measuring apparatus
HEIDENHAIN GMBH DR JOHANNES32 citations93
US4320578AMar 23, 1982
Measuring instrument mounting apparatus
HEIDENHAIN GMBH DR JOHANNES44 citations93
US4160328AJul 10, 1979
Segmented longitudinal measuring device
HEIDENHAIN GMBH DR JOHANNES38 citations93
US4060903ADec 6, 1977
Compensation of errors in incremental measuring or positioning instruments
HEIDENHAIN GMBH DR JOHANNES32 citations93
US4549354AOct 29, 1985
Measuring system
HEIDENHAIN GMBH DR JOHANNES30 citations92
US4530155AJul 23, 1985
Method and apparatus for reproducing a reference position in an incremental measuring device
HEIDENHAIN GMBH DR JOHANNES34 citations92
US4631404ADec 23, 1986
Position measuring system
HEIDENHAIN GMBH DR JOHANNES33 citations89
US4712088ADec 8, 1987
Multistage angle encoder with an improved allocation of coarse code information to fine code information
HEIDENHAIN GMBH DR JOHANNES23 citations82
US4461083AJul 24, 1984
Length or angle measuring instrument
HEIDENHAIN GMBH DR JOHANNES26 citations82
US4253021AFeb 24, 1981
Incremental measuring instrument
HEIDENHAIN GMBH DR JOHANNES20 citations82
US4198757AApr 22, 1980
Fastening apparatus for longitudinal measuring system
HEIDENHAIN GMBH DR JOHANNES25 citations82
US4512184AApr 23, 1985
Mounting arrangement for angle measuring device
HEIDENHAIN GMBH DR JOHANNES23 citations81
US4388758AJun 21, 1983
Digital electrical angle-measuring device
HEIDENHAIN GMBH DR JOHANNES23 citations80
US4951399AAug 28, 1990
Position measuring device
HEIDENHAIN GMBH DR JOHANNES8 citations74
US4819546AApr 11, 1989
Device for measuring feed movement
HEIDENHAIN GMBH DR JOHANNES13 citations74
US4763417AAug 16, 1988
Multi-coordinate probe
HEIDENHAIN GMBH DR JOHANNES12 citations74
US4581826AApr 15, 1986
Sensing pin mounting arrangement for multicoordinate sensing head
HEIDENHAIN GMBH DR JOHANNES15 citations74
US4549808AOct 29, 1985
Movable aperture photoelectric measuring instrument
HEIDENHAIN GMBH DR JOHANNES11 citations74
US4549356AOct 29, 1985
Sealing arrangement for multicoordinate sensing head
HEIDENHAIN GMBH DR JOHANNES13 citations74
US4547772AOct 15, 1985
Multicoordinate sensing head
HEIDENHAIN GMBH DR JOHANNES12 citations74
US4413416ANov 8, 1983
Measuring device
HEIDENHAIN GMBH DR JOHANNES17 citations74
US4369578AJan 25, 1983
Encapsulated angle measuring apparatus
HEIDENHAIN GMBH DR JOHANNES19 citations74
US4276696AJul 7, 1981
Precision length measuring instrument
HEIDENHAIN GMBH DR JOHANNES13 citations74
US4171160AOct 16, 1979
Distance measuring instrument
HEIDENHAIN GMBH DR JOHANNES12 citations74
US4170828AOct 16, 1979
Error correction apparatus for longitudinal measuring instrument
HEIDENHAIN GMBH DR JOHANNES13 citations74
US4169316AOct 2, 1979
Vibration resistant measuring device
HEIDENHAIN GMBH DR JOHANNES10 citations74
US4152837AMay 8, 1979
Length measuring device
HEIDENHAIN GMBH DR JOHANNES14 citations74
US4117601AOct 3, 1978
Longitudinal measuring instrument
HEIDENHAIN GMBH DR JOHANNES9 citations72
US4057258ANov 8, 1977
Measuring arrangement
HEIDENHAIN GMBH DR JOHANNES13 citations71
US4897929AFeb 6, 1990
Multi-coordinate probe
HEIDENHAIN GMBH DR JOHANNES7 citations70
US4987302AJan 22, 1991
Photoelectric angle measuring apparatus whose optically projecting focal line coincides with the axis of rotation of the scale carrier
HEIDENHAIN GMBH DR JOHANNES6 citations63
US4743754AMay 10, 1988
Length- or angle-measuring arrangement
HEIDENHAIN GMBH DR JOHANNES3 citations63
US4567665AFeb 4, 1986
Position sensing apparatus
HEIDENHAIN GMBH DR JOHANNES3 citations63
US4517742AMay 21, 1985
Apparatus and method for correcting errors in a length or angle measuring system
HEIDENHAIN GMBH DR JOHANNES6 citations63
US4243325AJan 6, 1981
Optical distance measuring instrument
HEIDENHAIN GMBH DR JOHANNES6 citations63
USD282460SFeb 4, 1986
Electronic hand wheel for controlling the operating components of a machine or the like
HEIDENHAIN GMBH DR JOHANNES1 citations52