Assignee
SPECTRA PRECISION INC
US18 patents
Top patents by PatentIndex Score
US6112145AAug 29, 2000
Method and apparatus for controlling the spatial orientation of the blade on an earthmoving machine
SPECTRA PRECISION INC123 citations92
US5848485ADec 15, 1998
System for determining the position of a tool mounted on pivotable arm using a light source and reflectors
SPECTRA PRECISION INC114 citations92
US6055046AApr 25, 2000
System and method for aligning a laser transmitter
SPECTRA PRECISION INC42 citations88
US6043874AMar 28, 2000
System and method for calibrating a laser transmitter
SPECTRA PRECISION INC26 citations88
US5886776AMar 23, 1999
Laser beam receiver circuit
SPECTRA PRECISION INC30 citations87
US5852493ADec 22, 1998
Self-aligning laser transmitter having a dual slope grade mechanism
SPECTRA PRECISION INC76 citations86
US5805362ASep 8, 1998
Focusing mechanism using a thin diaphragm
SPECTRA PRECISION INC47 citations86
US5994688ANov 30, 1999
Position leveling sensor for a laser transmitter
SPECTRA PRECISION INC31 citations85
US6091487AJul 18, 2000
Laser transmitter incorporating auto scan dither zone
SPECTRA PRECISION INC8 citations73
US6088623AJul 11, 2000
System and method for leveling an apparatus
SPECTRA PRECISION INC20 citations71
US5867522AFeb 2, 1999
Autofocusing system for a laser transmitter
SPECTRA PRECISION INC15 citations71
US5844679ADec 1, 1998
System for adjusting the orientation of a plane of laser light
SPECTRA PRECISION INC13 citations71
US6099235AAug 8, 2000
Arrangement for determining the relative angular orientation between a first machine element and a second machine element
SPECTRA PRECISION INC12 citations69
US5977534ANov 2, 1999
Laser transmitter incorporating target dither
SPECTRA PRECISION INC10 citations69
US5959739ASep 28, 1999
System for distinguishing true target reflections from ghost target reflections
SPECTRA PRECISION INC4 citations60
US6121598ASep 19, 2000
Laser transmitter incorporating target dither
SPECTRA PRECISION INC5 citations58
US6034613AMar 7, 2000
Shock and vibration sensor
SPECTRA PRECISION INC2 citations53
US6046445AApr 4, 2000
Solar powered laser receiver circuit
SPECTRA PRECISION INC0 citations39