EP 1325283 A4 20040915 - LEVEL AND/OR VERTICALITY INDICATOR USING LASER BEAMS
Title (en)
LEVEL AND/OR VERTICALITY INDICATOR USING LASER BEAMS
Title (de)
HORIZONTAL- UND/ODER VERTIKALNIVELLIERUNGSANZEIGE MIT LASERSTRAHLEN
Title (fr)
INDICATEUR DE NIVEAU HORIZONTAL ET/OU VERTICAL A FAISCEAUX LASER
Publication
Application
Priority
- KR 0001094 W 20000930
- KR 20000055999 A 20000923
Abstract (en)
[origin: WO0225210A1] A levelness and or vertically indicator using a laser beam is provided in which a laser beam emitted from a laser beam scanning mechanism (4) is converted to a laser beam line by using a cylindrical lens (145) or a polygonal rotary mirror and the laser beam line is used for indicating levelness and or vertically and a vertical point with the bear eyes by a calibration process for matching the laser beam line with a reference levelness line. The levelness and or vertically indicator includes a laser diode (50a) for emitting a laser beam, a laser beam converting and outputting unit for converting the received laser beam and outputting the converted laser beam, and a portion for providing a reference levelness so that the laser beam line output from the laser beam converting and outputting unit maintains the reference levelness. Also, the pendulum movement of a weight plumb (94) is stopped quickly due to magnetic resistance so that the real levelness and vertically and a vertical point are convenient are indicated by using a laser beam. Thus, the time and work amount needing for indicating levelness and or verticality is reduced. Further, when a an object to be worked on is huge, levelness and or verticaly can be effectively indicated.
IPC 1-7
IPC 8 full level
G01C 1/00 (2006.01); G01B 11/00 (2006.01); G01C 15/00 (2006.01)
CPC (source: EP KR)
G01B 11/00 (2013.01 - KR); G01C 5/04 (2013.01 - EP); G01C 15/004 (2013.01 - EP)
Citation (search report)
- [XA] US 5182863 A 19930202 - RANDO JOSEPH F [US]
- [XA] EP 0722080 A1 19960717 - TOPCON CORP [JP]
- [XA] US 5459932 A 19951024 - RANDO JOSEPH F [US], et al
- [XA] US 5604987 A 19970225 - CUPP JOHN P [US]
- [A] US 5992029 A 19991130 - DONG DAWEI [US]
- [A] US 5619802 A 19970415 - RANDO JOSEPH F [US], et al
- See references of WO 0225210A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0225210 A1 20020328; AU 7690100 A 20020402; CN 1461403 A 20031210; EP 1325283 A1 20030709; EP 1325283 A4 20040915; KR 100415318 B1 20040116; KR 20020023599 A 20020329; RU 2003111764 A 20041010
DOCDB simple family (application)
KR 0001094 W 20000930; AU 7690100 A 20000930; CN 00820012 A 20000930; EP 00966564 A 20000930; KR 20000055999 A 20000923; RU 2003111764 A 20000930