US20040123472A1 - Laser level with adjustable laser projection line - Google Patents

Laser level with adjustable laser projection line Download PDF

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Publication number
US20040123472A1
US20040123472A1 US10/706,227 US70622703A US2004123472A1 US 20040123472 A1 US20040123472 A1 US 20040123472A1 US 70622703 A US70622703 A US 70622703A US 2004123472 A1 US2004123472 A1 US 2004123472A1
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US
United States
Prior art keywords
laser
housing
generator
knob
level
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
US10/706,227
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US20040205972A2 (en
US7055252B2 (en
Inventor
Shuming Wu
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Chevron International Trading Co Ltd
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Publication date
Priority to CN02293048.5 priority Critical
Priority to CN02293048U priority patent/CN2588326Y/en
Application filed by Chevron International Trading Co Ltd filed Critical Chevron International Trading Co Ltd
Publication of US20040123472A1 publication Critical patent/US20040123472A1/en
Publication of US20040205972A2 publication Critical patent/US20040205972A2/en
Priority claimed from US11/288,010 external-priority patent/US20060070251A1/en
Publication of US7055252B2 publication Critical patent/US7055252B2/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C15/00Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C15/00Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
    • G01C15/002Active optical surveying means
    • G01C15/004Reference lines, planes or sectors

Abstract

A laser level with adjustable laser projection line comprises a support bracket, a housing, a switch, a laser generator which project a fanned laser beam to the surface of the work piece to form a line, and wherein a rotating mechanism is coupled to rotate the laser generator thereby causing rotation of the line. There is also a positioning device to position the laser level on an arbitrary surface.

Description

    RELATED APPLICATIONS
  • This application claims priority from Chinese Application No. 02293048.5, filed on Dec. 27, 2002. [0001]
  • FIELD OF THE INVENTION
  • The present invention relates to an alignment-product which reflects a line on a surface as a positioning reference, and particularly to a laser level which marks a line on a reference surface with the fanned beam projected by a laser generator. [0002]
  • BACKGROUND OF THE INVENTION
  • There are many kinds of laser alignment devices, which project laser beams by laser generators to mark lines. One such device is designed by U.S. Tool Co. (U.S. Patent Application Publication No. US2002/0178596A1), which can project a line of fixed orientation. Another such device is marketed by U.S. CTB/Berger, which can project a horizontal line and a plumb line decussate to each other on walls perpendicular to the direction of propagation of the laser. The former can merely project a line parallel to the baseplane of its pedestal; the latter can form two lines vertical with each other, but there is a disadvantage that two laser generators are needed, and as the switch is turned on, required or not, the two laser generators project beams simultaneously, thereby causing much more power consumption. [0003]
  • SUMMARY OF THE INVENTION
  • It is an object of the present invention to provide a laser level with only one laser generator which can be rotated 90 degrees to alter the location relationship of the laser beam with the base plane of the laser level. [0004]
  • Another object of the present invention is to provide a means to mount the laser level on a metallic surface. [0005]
  • A further object is to provide a separate base plate which can protrude a plurality of retractable pins to suspend and hold the laser level on a surface of plastic, cork, wood, drywall or other soft object. [0006]
  • An even further object of this invention is to provide one or more level bubbles to indicate whether the laser beam is horizontally or vertically level. [0007]
  • To achieve the objects hereinbefore, the laser alignment device of the present invention includes a support bracket, a clamshell housing defined by a left clamshall housing member and a right clamshell housing member, a laser generator, a battery to power the laser generator, a cover for a battery pack, a switch, a protective door and a rotating mechanism. The protective door is used to activate the trigger of the linked switch. The laser generator will be switched off when the door is closed, and the lens of the laser generator will be protected against dust. When the door is opened, the switch connects the laser generator to the power supply and the laser generator will project a fan-shaped laser beam to form a line on a surface. [0008]
  • The rotating mechanism includes a knob which can rotate from 0 to 90 degrees, and which is coupled to the laser generator to rotate the laser generator when the knob is turned, thereby causing rotation of the line on the plane. [0009]
  • There may be a magnetic attachment means on the base of the support bracket. When it is necessary to secure the laser level on a surface of a metallic object (e.g., a pipe or metal stud) one needs only to place the laser level with adjustable laser projection line onto the metallic object, and the laser level will be held there via the magnetic attachment means. In this manner, the laser level can be positioned on a non-horizontal plane in a realtively secure position, and avoid instability. [0010]
  • The laser level with adjustable laser projection line also includes a separate removable mounting baseplate having two or more retractable pins which can be extended from the removable mounting baseplate and inserted into the wall, wood, plastic or other soft object as desired. When not in use, the pins can retract into a cavity in the removable mounting baseplate. [0011]
  • The laser level with adjustable laser projection line can be powered by an internal battery. The user need only screw the cover off without the aid of a tool to remove the discharged battery cells and fill in new battery cells to power the laser generator. [0012]
  • The laser level can further comprise two conventional level bubbles which are perpendicular to each other on the top of the laser level, The two level bubbles are both parallel to the bottom of the laser level, for orientation or leveling a precise horizontal line or plumb line. [0013]
  • The laser level with adjustable laser projection line disclosed by the present invention can expediently mark a reference line accordingly on a workpiece as needed. The reference line can be parallel, vertical or be adjusted to other angular degrees to the bottom of the laser level.[0014]
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 illustrates a perspective view of a preferred embodiment of a laser level with adjustable laser projection line according to the present invention; [0015]
  • FIG. 2 is an inner perspective view of the laser level of FIG. 1 with left clamshell housing member removed; [0016]
  • FIG. 3 is a sectional view of the mechanism for rotating the laser when the mechanism is rotated to its right limit with the laser beam perpendicular to the bottom plate of the laser level; [0017]
  • FIG. 4 is a sectional view of the rotating mechanism when it is rotated to its left limit with the laser beam parallel to the bottom plate of the laser level; [0018]
  • FIG. 5 is a sectional view of the removable base plate; [0019]
  • FIG. 6 is a sectional view of the removable base plate wherein the positioning pins are retracted inside the removable base plate; [0020]
  • FIG. 7 is a sectional view of the removable base plate wherein the positioning pins protrude outward; [0021]
  • FIG. 8 is a perspective view of the laser level with adjustable laser projection line when it is positioned and held on a vertical plane.[0022]
  • DETAILED DESCRIPTION OF THE DRAWINGS
  • Referring to FIGS. 1 and 2, the laser level with adjustable laser projection line [0023] 100 of the present invention comprises a support bracket 1, a left clamshell housing member 2, a right clamshell housing member 3, a laser protection door 4, a laser generator 10 mounted on the front bracket 1B of the support bracket 1, a battery pack 11 or power supply to power the laser generator 10, a switch 41 to control the laser generator 10 and a cover 6 for the battery pack. The protective door 4 can trigger the switch 41 when it is opened or closed, as shown in FIG. 1. As the door 4 is in the closed position, it slides the switch 41 to the off position and switches off the laser generator 10. The closed door 4 also protects the laser generator 10 and lens 10A against dust. When the door 4 is pushed downwardly to access lens 10A of the laser generator 10, as shown in FIG. 2, the door 4 slides the switch 41 to the on position at the same time, switching on the laser generator 10 to project a fan-shaped laser beam 13 and form a line 131 on the surface to be illuminated.
  • Referring now to FIGS. 3 and 4, the laser generator [0024] 10 in the laser alignment device 100 of the present invention includes a rotating mechanism 5, which can have a knob 51 secured on the laser generator 10 which will rotate along with the rotation of knob 51. When knob 51 is turned clockwise to its limit, the planar beam projected by the laser generator 10 will be parallel to the bottom of laser level 100 (FIG. 4); and, when knob 51 is turned counterclockwise to its limit (the angular degree of rotation preferably being 90 degrees), the planer beam projected by the laser generator 10 will be perpendicular to the bottom of the laser alignment device 100 (FIG. 3). To avoid knob 51 from rotating arbitrarily and affecting the stability of the laser beam position accordingly, it is preferred to arrange two magnetic members 52, 53 on knob 51, and arrange two fastening members 54, 55 on the corresponding position of the front bracket 1B. When the knob 51 being rotated to its clockwise limit, the fastening member 54 is caught by the magnetic member 53; and when knob 51 rotates to its counterclockwise limit, the fastening member 55 is caught by the magnetic member 52, ensuring the position of knob 51 and thereby maintaining the stability of the laser beam position.
  • Referring to FIGS. 1 and 2, the laser alignment device [0025] 100 of the present invention may advantageously comprise one or more leveling devices such as bubbles 8, 9 to orientate or level the laser level 100 on a horizontal or vertical plane. The leveling bubbles 8, 9 are parallel to the bottom of the laser level 100. Bubble 8 is used to level the horizontal relationship of the elongated side position of the laser level with adjustable laser projection line 100, and bubble 9 is used to level the horizontal relationship of fore-and-aft position of the laser level 100. Thus, laser level 100 can provide accurate horizontal lines and plumb lines with the usage of the level bubbles 8, 9.
  • The laser level with adjustable laser protection line [0026] 10 as described above can also be used on a horizontal position for a metallic surface. To solve this problem, as shown in FIG. 2, a magnet 12 is mounted on the base 1A of the support bracket 1 of the laser level 100, thereby allowing laser alignment device 100 to be placed and held on an arbitrary portion of the metallic surface.
  • To position laser level [0027] 100 on a wood, plastic, drywall or other surface, as shown in FIG. 1, a removable baseplate 7 may be used with the laser level 100 for mounting. As shown in FIG. 5, the baseplate 7 comprises two pushpads 73 each including at least one retractable positioning pin 72. In the embodiment shown in FIGS. 5-7, there are three retractable pins 72 on each pushpad 73. When pushpads 73 are relaxed, the retractable pins 72 are retracted within the removable mounting baseplate 7, as shown in FIG. 6, thus preventing the operator from being stabbed carelessly. When pushpads 73 are pressed down, the positioning pins 72 will extend outwardly from the bottom 74 of the mounting baseplate 7 as shown in FIG. 7. The mounting baseplate 7 can be mounted to the surface of a wall (drywall, plastic, plaster or other surface) by inserting the retractable pins 72 into the surface. The laser level 100 can then be attached to the mounting baseplate 7 by placing the magnet 12 on the bottom of the laser level 100 to a metallic attachment surface 71 on the mounting baseplate 7 thereby fastening the laser level 100 to the baseplate 7.
  • FIG. 8 is a perspective view of the laser alignment device [0028] 100 when it is situated on the vertical plane with the laser beam projecting downwardly.

Claims (14)

I claim:
1. A laser level with adjustable laser projection line, comprising:
a housing
a support bracket positioned within the housing;
a laser generator connected to the support bracket;
a power supply;
a switch for connecting the power supply to the laser generator;
wherein said laser generator projects a laser beam forwardly to form a line on a surface to be illuminated, the laser generator being rotably coupled to the support bracket such that in a first position the line is projected vertically on the surface and in a second position the line is projected horizontally on the surface.
2. The laser level with adjustable laser projection line of claim 1, further including a protective door connected to the switch and which is capable of being moved from a first open position to a second closed position, wherein when the protective door is in the first open position the switch connects the power supply to the laser generator and when the door is in the second closed position the switch disconnects the power supply from the laser generator.
3. The laser level with adjustable laser projection line of claim 1, wherein said rotating mechanism further comprises a knob and two magnetic members and corresponding two fastening members which can be caught by the magnetic members.
4. The laser level with adjustable laser projection line of claim 1, wherein the support bracket has a base which includes a magnet.
5. The laser level with adjustable laser projection line of claim 4, wherein the base is coupled to a removable mounting baseplate, the baseplate comprising two pushpads each of which comprises at least one tractable pin, when said pushpads are depressed, said pins protrude from the bottom of the baseplate.
6. A laser generating device comprising:
a housing having a base;
a laser generator disposed within the housing for projecting a laser beam through an opening in the housing onto a workpiece; and
the laser generator coupled to a support bracket for rotating the projected laser beam from 0 degrees to 90 degrees with respect to the bottom of the housing.
7. The laser generating device of claim 6, wherein the rotating mechanism comprises a knob which protrudes from the housing.
8. The laser generating device of claim 7, wherein the laser generator is connected to the knob and when the knob is turned clockwise to its limit, the laser beam projected by the laser generator will be one of either vertical or horizontal to the bottom of the housing, and when the knob is turned counter-clockwise to its limit, the laser beam projected by the laser generator will be the other of either vertical or horizontal to the bottom of the housing.
9. The laser generating device of claim 8, wherein the laser generating unit is mounted on a bracket in the housing, the knob has first and second magnets attached thereto, and the bracket has first and second positioning members, whereby when the knob is turned clockwise to its limit the first magnet cooperates with the first positioning member to stabilize the position of the generated laser beam and when the knob is turned counter-clockwise to its limit the second magnet cooperates with the second positioning member to stabilize the position of the generated laser beam.
10. The laser generating device of claim 6, wherein the base has a magnet for securing the laser level device to a metallic surface.
11. The laser generating device of claim 6, wherein the housing has a leveling bubble.
12. A laser generating device comprising:
a housing having an opening at one end and a base;
a magnet disposed on the base of the housing;
a laser generator disposed within the housing for projecting a laser beam onto a workpiece;
a rotating mechanism coupled to the laser generator for rotating the projected laser beam from 0 degrees to 90 degrees with respect to the bottom of the housing.
13. The laser generating device of claim 12 wherein a retractable cover is disposed over the opening and is moveable from a first open position to a second closed position, wherein when the protective door is in the first open position the switch connects the power supply to the laser generator and when the door is in the second closed position the switch disconnects the power supply from the laser generator.
14. An assembly for generating a laser line, the assembly comprising:
a laser generating device comprising,
a housing having a base, the base including a magnet;
an opening formed in the housing;
a laser generator coupled to a support bracket within the housing for projecting a laser beam through the opening in the housing;
a knob attached to the laser generator and extending outwardly from the housing; and
a removable mounting baseplate having an attachment surface which cooperates with the magnet to retain the laser generating device thereto.
US10/706,227 2002-12-27 2003-11-12 Laser level with adjustable laser projection line Active 2024-10-11 US7055252B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN02293048.5 2002-12-27
CN02293048U CN2588326Y (en) 2002-12-27 2002-12-27 Laser line marking device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/288,010 US20060070251A1 (en) 2003-11-12 2005-11-28 Line-marking device with rotatable laser
US11/383,041 US7243433B2 (en) 2002-12-27 2006-05-12 Laser level with adjustable laser projection line

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US11/288,010 Continuation-In-Part US20060070251A1 (en) 2002-12-27 2005-11-28 Line-marking device with rotatable laser
US11/383,041 Continuation US7243433B2 (en) 2002-12-27 2006-05-12 Laser level with adjustable laser projection line

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US20040123472A1 true US20040123472A1 (en) 2004-07-01
US20040205972A2 US20040205972A2 (en) 2004-10-21
US7055252B2 US7055252B2 (en) 2006-06-06

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US11/383,041 Expired - Fee Related US7243433B2 (en) 2002-12-27 2006-05-12 Laser level with adjustable laser projection line

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CN (1) CN2588326Y (en)
CA (1) CA2453808A1 (en)
DE (1) DE20320250U1 (en)
FR (1) FR2849499B3 (en)
GB (1) GB2398385B (en)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050022399A1 (en) * 2003-08-01 2005-02-03 Wheeler Thomas J. Laser level
US20050204570A1 (en) * 2004-03-18 2005-09-22 Bascom James P Laser level
US20050226305A1 (en) * 2004-04-09 2005-10-13 Hsu Chao F Laser beam projection device having a rotary locking structure
US20050246912A1 (en) * 2004-05-07 2005-11-10 Marshall James D Line generating device
US20050278966A1 (en) * 2004-06-18 2005-12-22 Liu Carl Y Laser level
US20060016083A1 (en) * 2004-07-23 2006-01-26 Index Measuring Tape Co., Ltd. Level laser indicator
EP1627710A1 (en) * 2004-08-17 2006-02-22 Techtronic Industries Co., Ltd. Modular tool assembly having a vacuum mounting arrangement
US20060095099A1 (en) * 2004-02-04 2006-05-04 Shanks Steven C Stand-alone scanning laser device
US20060112576A1 (en) * 2004-11-30 2006-06-01 Lu Jian H Hand-held laser level with retractable adhesive-type retention feature
US20060224218A1 (en) * 2004-02-04 2006-10-05 Kevin Tucek Scanning treatment laser with sweep beam spot and universal carriage
US20070109808A1 (en) * 2005-11-15 2007-05-17 Hobden Robert J Light line generating assembly
US20070135870A1 (en) * 2004-02-04 2007-06-14 Hearingmed Laser Technologies, Llc Method for treating hearing loss
US20090132012A1 (en) * 2007-11-16 2009-05-21 Therapy Products, Inc. Method for pretreating patient before surgery
US20100016931A1 (en) * 2001-03-02 2010-01-21 Therapy Products, Inc. Method of Reducing Cholesterol Using Laser Energy
US20100196497A1 (en) * 2009-02-02 2010-08-05 Therapy Products, Inc. Method of Treating Tissue Using Platelet-Rich Plasma in Combination with Low-Level Laser Therapy
US20100324426A1 (en) * 2004-10-29 2010-12-23 Erchonia Corporation Full-Body Laser Scanner and Method of Mapping and Contouring the Body
KR20140114300A (en) * 2013-03-18 2014-09-26 가부시키가이샤 미쓰토요 Shape measuring apparatus
US10309776B2 (en) * 2016-05-24 2019-06-04 Paul Joseph Doeren Laser alignment guide
USD872602S1 (en) 2017-05-24 2020-01-14 Paul Joseph Doeren Conduit tool

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2588326Y (en) * 2002-12-27 2003-11-26 南京泉峰国际贸易有限公司 Laser line marking device
US20060070251A1 (en) * 2003-11-12 2006-04-06 Shuming Wu Line-marking device with rotatable laser
US7269907B2 (en) * 2003-07-01 2007-09-18 Irwin Industrial Tool Company Laser line generating device with swivel base
US7013570B2 (en) * 2003-06-18 2006-03-21 Irwin-Industrial Tool Company Stud finder
US7278218B2 (en) * 2003-06-18 2007-10-09 Irwin Industrial Tool Company Laser line generating device with swivel base
US7024791B2 (en) * 2004-01-12 2006-04-11 Black & Decker Inc. Tape measure with laser beam
CN100393482C (en) * 2004-08-17 2008-06-11 创科实业有限公司 Modular tool assembly having a vacuum mounting arrangement
US7181854B2 (en) * 2004-08-17 2007-02-27 Eastway Fair Company Limited Laser leveling device having a suction mounting arrangement
US20070044332A1 (en) * 2005-08-26 2007-03-01 Billy Yung Laser leveler with rotatable top section
US7670342B2 (en) * 2006-01-25 2010-03-02 Warsaw Orthopedic, Inc. Osteochondral implant procedure and device
US7594336B2 (en) * 2006-06-22 2009-09-29 The Stanley Works Line anchor
US7506450B2 (en) 2006-06-30 2009-03-24 The Stanley Works Adhesive mount for a leveling device and a leveling device
US20080052927A1 (en) * 2006-09-05 2008-03-06 Eastway Fair Company Limited Self-leveling line generator
US20080052926A1 (en) * 2006-09-05 2008-03-06 Eastway Fair Company Limited Gravity dial level indicator for line generator
DE102006061727A1 (en) * 2006-12-28 2008-07-03 Robert Bosch Gmbh Measuring device fastening unit, has spring elastic contact surfaces for contacting at surface, which includes curvature opposite to contact plane in unloaded condition, where plane is defined by plane contact surface of fastening unit
US8763258B2 (en) * 2008-01-31 2014-07-01 Black & Decker Inc. Portable band saw
US20100122466A1 (en) * 2008-11-19 2010-05-20 The Wiremold Company Alignment apparatus
US9057607B2 (en) * 2012-07-26 2015-06-16 Brian Phillip Travis Laser measuring device
US9753178B2 (en) * 2013-11-26 2017-09-05 Banner Engineering Corporation Sensor component stabilization
CN104004530B (en) * 2014-06-18 2016-06-15 中国一冶集团有限公司 Coke oven chute builds middle chute mouth position pre-control device and method by laying bricks or stones
CN105157672B (en) * 2015-08-24 2017-08-01 国家电网公司 A kind of vertical survey instrument being used between shaft tower
DE102016205089A1 (en) * 2016-03-29 2017-10-05 Robert Bosch Gmbh Leveling device with a pendulating light generating unit
EP3516327A4 (en) * 2016-09-20 2020-06-10 CertainTeed Gypsum, Inc. System, method and apparatus for drywall joint detection and measurement
KR101871958B1 (en) * 2016-12-19 2018-08-02 울산과학기술원 Laser guide apparatus and method for measuring distance and degree using the same
US10508916B2 (en) * 2018-03-22 2019-12-17 Cheng-Hsiung Huang Laser level

Citations (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4247809A (en) * 1979-01-23 1981-01-27 Agl Corporation Electrical levelling system for laser beam
US4718171A (en) * 1986-01-17 1988-01-12 Nestle & Fischer Levelling system with rotating laser beam
US4751782A (en) * 1986-01-18 1988-06-21 Ammann Hans Rudolf Laser beam levelling instruments
US4781457A (en) * 1984-03-24 1988-11-01 Tokyo Kogaku Kikai Kabushiki Kaisha Laser surveying equipment
US4830489A (en) * 1986-08-20 1989-05-16 Spectra-Physics, Inc. Three dimensional laser beam survey system
US5331395A (en) * 1991-10-09 1994-07-19 Leica Heerbrugg Ag Device for aligning a laser leveling instrument along a building line
US5446635A (en) * 1993-06-24 1995-08-29 Quarton, Inc. Laser assembly for marking a line on a workpiece for guiding a cutting tool
US5485266A (en) * 1992-07-09 1996-01-16 Kabushiki Kaisha Topcon Laser beam survey instrument having a tiltable laser beam axis and tilt detectors
US5531031A (en) * 1995-01-20 1996-07-02 Green; Kevin D. Laser level and square
US5636018A (en) * 1992-07-09 1997-06-03 Kabushiki Kaisha Topcon Laser beam survey instrument having a tiltable laser beam axis and tilt detectors
US5742387A (en) * 1995-12-21 1998-04-21 Ammann Lasertechnik Ag Laser beam levelling device and process for operating a laser beam levelling device and associated contrivance
US5745623A (en) * 1995-08-17 1998-04-28 Kabushiki Kaisha Topcon Laser system for surveying
US5754582A (en) * 1995-04-03 1998-05-19 Momentum Laser, Inc. Laser level
US5760932A (en) * 1995-08-30 1998-06-02 Mirage Development Ltd. Target for laser leveling systems
US5838431A (en) * 1996-01-16 1998-11-17 Asahi Kogaku Kogyo Kabushiki Kaisha Laser marking device
US5836081A (en) * 1996-05-29 1998-11-17 Charles F. Schroeder Light beam leveling means and method
US5898490A (en) * 1996-03-19 1999-04-27 Kabushiki Kaisha Topcon Laser survey instrument
US5946087A (en) * 1997-01-21 1999-08-31 Kabushiki Kaisha Topcon Laser survey instrument
US5960551A (en) * 1996-07-22 1999-10-05 Kabushiki Kaisha Topcon Rotary laser irradiating system
US6014211A (en) * 1998-01-20 2000-01-11 Laser Reference Device and method for providing a laser level plane
US6055046A (en) * 1999-02-01 2000-04-25 Spectra Precision, Inc. System and method for aligning a laser transmitter
US6151106A (en) * 1998-02-09 2000-11-21 Kabushiki Kaisha Topcon Laser irradiation system
US6178649B1 (en) * 1998-01-16 2001-01-30 Chyi-Yiing Wu Optical calibrating apparatus for emitting datum laser line
US6222625B1 (en) * 1999-08-13 2001-04-24 William R. Johnston Adjustable laser string square
US6249338B1 (en) * 1995-02-14 2001-06-19 Kabushiki Kaisha Topcon Laser survey instrument
US6262801B1 (en) * 1995-05-25 2001-07-17 Kabushiki Kaisha Topcon Laser reference level setting device
US6351890B1 (en) * 1996-09-10 2002-03-05 Nigel Emlyn Williams Laser light referencing tool
US6493067B1 (en) * 1998-12-29 2002-12-10 Kabushiki Kaisha Topcon Rotary laser irradiating system
USD475938S1 (en) * 2002-07-09 2003-06-17 Black & Decker Inc. Laser level
USD476584S1 (en) * 2001-02-23 2003-07-01 Black & Decker Inc. Laser level
US6606798B2 (en) * 2001-02-23 2003-08-19 Black & Decker Inc. Laser level
US6735879B2 (en) * 2001-05-15 2004-05-18 Irwin Industrial Tool Company Laser line generating device
US6739062B2 (en) * 2002-08-09 2004-05-25 Quarton, Inc Universal angle means

Family Cites Families (74)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH672839A5 (en) 1987-01-19 1989-12-29 Ammann Lasertechnik
US4852265A (en) 1988-04-08 1989-08-01 Spectra-Physics, Inc. Level/plumb indicator with tilt compensation
US4912851A (en) 1988-04-08 1990-04-03 Spectra-Physics, Inc. Level/plumb indicator with tilt compensation
US4993161A (en) 1990-01-04 1991-02-19 David White, Inc. Laser beam level instrument
CH680019A5 (en) 1990-03-27 1992-05-29 Ammann Lasertechnik
US5182863A (en) 1990-10-22 1993-02-02 Spectra-Physics Laserplane, Inc. Automatic plumb and level tool with acoustic measuring capability
US5075977A (en) 1990-10-22 1991-12-31 Spectra-Physics, Inc. Automatic plumb and level tool
US5218770A (en) 1990-11-27 1993-06-15 Asahi Seimitsu Kabushiki Kaisha Surveying machine for construction work
US5144487A (en) 1991-09-03 1992-09-01 Pacific Laser Portable laser device for alignment tasks
USD348227S (en) 1992-07-13 1994-06-28 Laser Alignment, Inc. Laser beacon
US5368889A (en) * 1993-04-16 1994-11-29 The Dow Chemical Company Method of making thin film composite membranes
US5367779A (en) 1993-08-18 1994-11-29 Cheng Long Plastic Co., Ltd. Laser marker
US5617202A (en) 1994-05-24 1997-04-01 Levelite Technology, Inc. Diode laser co-linear and intersecting light beam generator
US5541727A (en) 1993-08-27 1996-07-30 Rando; Joseph F. Automatic level and plumb tool
US5459932A (en) 1993-08-27 1995-10-24 Levelite Technology, Inc. Automatic level and plumb tool
USD363240S (en) 1994-01-20 1995-10-17 Sokkia Co., Ltd. Surveying apparatus utilizing a laser beam
US5400514A (en) 1994-02-22 1995-03-28 Economy Laser, Inc. Laser instrument for tracing reference lines and other geometric figures
US5500524A (en) 1994-09-23 1996-03-19 Levelite Technology, Inc. Diode laser co-linear light beam generator
EP0722080B1 (en) 1995-01-11 2000-03-15 Kabushiki Kaisha Topcon Laser levelling device
US5561911A (en) 1995-01-19 1996-10-08 Martin; Jeffrey J. Level tool with laser light alignment capabilities
US5604987A (en) 1995-02-10 1997-02-25 John P. Cupp Laser level, accessories and method of use
US5519942A (en) 1995-03-02 1996-05-28 Webb; James Levelling and transit system
US5539990A (en) 1995-05-30 1996-07-30 Le; Mike Three-dimensional optical levelling, plumbing and angle-calibrating instrument
US5594993A (en) 1995-06-22 1997-01-21 Builders Tools, Inc. Hand-held builder's square and string line device incorporating a laser
USD383075S (en) 1995-06-26 1997-09-02 Sokkia Co., Ltd. Surveying apparatus utilizing a laser beam
USD371309S (en) 1995-08-04 1996-07-02 James Webb Laser bubble level
JPH09210687A (en) 1996-01-31 1997-08-12 Topcon Corp Laser level
USD376111S (en) 1996-02-28 1996-12-03 Kabushiki Kaisha Topcon Laser measurement equipment
US5784792A (en) 1996-05-13 1998-07-28 Smith; James A. Hand-held laser level grade checking device
US5872657A (en) 1996-05-31 1999-02-16 Levelite Technology, Inc. Construction laser accessory for generating aligned spots
JP3754139B2 (en) 1996-08-06 2006-03-08 株式会社トプコン Laser reference level device
US5842282A (en) 1996-10-01 1998-12-01 Opcom Inc. Laser angle adjustment device for laser measuring instruments
US5864956A (en) 1996-11-22 1999-02-02 Dong; Dawei Level line and limb line combination
USD389758S (en) 1996-11-27 1998-01-27 Lasers for Construction, Inc. Laser level
USD397627S (en) 1997-04-14 1998-09-01 James Webb Slope grade adjuster for a level device
US5966826A (en) 1997-06-10 1999-10-19 Ho; Ko-Liang Dual usage level marking instrument
USD399145S (en) 1997-08-12 1998-10-06 Ko-Liang Ho Laser indicator
US5992029A (en) 1997-08-14 1999-11-30 Dong; Dawei Automatic laser plumb line
US5983510A (en) 1997-08-26 1999-11-16 Wu; Chyi-Yiing Three-dimensional laser levelling and angle-calibrating instrument with multiple functions
GB2329249B (en) 1997-09-12 2002-03-20 Michael John Smith Levelling device
USD402218S (en) 1997-10-18 1998-12-08 Kennison Eric M Laser level
USD429481S (en) 1997-11-10 2000-08-15 Topcon Corporation Rotating laser
USD416856S (en) 1997-11-11 1999-11-23 Kabushiki Kaisha Rotating laser
USD396817S (en) 1997-12-11 1998-08-11 James Webb Rotary base assembly for laser levels
US6065217A (en) 1997-12-12 2000-05-23 Dong; Dawei Laser rotary double crossliner
US6012229A (en) 1998-03-26 2000-01-11 Shiao; Hsuan-Sen Combined leveling device and laser pointer
US6009630A (en) 1998-04-21 2000-01-04 Levelite Technology, Inc. Reference laser projector with optional self-leveling mode
USD409508S (en) 1998-04-30 1999-05-11 Gallagher Anthony T Laser spirit level
USD411809S (en) 1998-05-18 1999-07-06 Asahi Seimitsu Kabushiki Kaisha Surveying apparatus/instruments
US5914778A (en) 1998-06-01 1999-06-22 Dong; Dawei Automatic laser level
USD417633S (en) 1998-06-12 1999-12-14 Kabushiki Kaisha Topcon Level
US6209219B1 (en) 1998-07-30 2001-04-03 The Stanley Works Measuring device with housing orientation indicator and position transferring focused light-beam source
US6195902B1 (en) 1998-08-04 2001-03-06 Quarton, Inc. Laser extender
US6163969A (en) 1998-08-04 2000-12-26 Quarton Inc. 3D laser leveler
USD418432S (en) 1998-08-13 2000-01-04 Zircon Corporation Laser level
USD418434S (en) 1998-08-13 2000-01-04 Zircon Corporation Base for a laser level
USD418433S (en) 1998-08-13 2000-01-04 Zircon Corporation Base for a laser alignment tool
USD418763S (en) 1998-08-13 2000-01-11 Zircon Corporation Laser alignment tool
USD420972S (en) 1998-08-14 2000-02-22 The Stanley Works Rotating laser
US6360446B1 (en) 1998-08-14 2002-03-26 The Stanley Works Level having a laser beam source
USD415436S (en) 1998-08-14 1999-10-19 The Stanley Works Laser torpedo level
US6167630B1 (en) 1998-08-31 2001-01-02 James Webb Aligned laser system having a combined level and square device
USD412857S (en) 1998-09-04 1999-08-17 The Stanley Works Laser torpedo level
USD411470S (en) 1998-11-17 1999-06-29 James Webb Laser beam level
US6202312B1 (en) 1999-03-08 2001-03-20 Levelite Technology, Inc. Laser tool for generating perpendicular lines of light on floor
US6407803B1 (en) 1999-03-25 2002-06-18 Endress + Hauser Gbmh + Co. Laser measuring device
DE19914540C2 (en) 1999-03-31 2003-12-11 Bosch Gmbh Robert leveling
US6502319B1 (en) * 2000-10-04 2003-01-07 Levelite Technology, Inc. Apparatus for producing a visible line of light on a surface
USD455664S1 (en) 2000-10-31 2002-04-16 James Webb Laser level module with digital readout
USD457446S1 (en) 2000-12-28 2002-05-21 Stabila-Messgerate Gustav Ullrich Gmbh & Co. Kg Laser level with level body
CN1537241A (en) * 2002-03-01 2004-10-13 美国工具有限公司 Manual leveling rotating laser with swivel head
CN2588326Y (en) * 2002-12-27 2003-11-26 南京泉峰国际贸易有限公司 Laser line marking device
US7013570B2 (en) * 2003-06-18 2006-03-21 Irwin-Industrial Tool Company Stud finder
US20050022399A1 (en) * 2003-08-01 2005-02-03 Wheeler Thomas J. Laser level

Patent Citations (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4247809A (en) * 1979-01-23 1981-01-27 Agl Corporation Electrical levelling system for laser beam
US4781457A (en) * 1984-03-24 1988-11-01 Tokyo Kogaku Kikai Kabushiki Kaisha Laser surveying equipment
US4718171A (en) * 1986-01-17 1988-01-12 Nestle & Fischer Levelling system with rotating laser beam
US4751782A (en) * 1986-01-18 1988-06-21 Ammann Hans Rudolf Laser beam levelling instruments
US4830489A (en) * 1986-08-20 1989-05-16 Spectra-Physics, Inc. Three dimensional laser beam survey system
US5331395A (en) * 1991-10-09 1994-07-19 Leica Heerbrugg Ag Device for aligning a laser leveling instrument along a building line
US5636018A (en) * 1992-07-09 1997-06-03 Kabushiki Kaisha Topcon Laser beam survey instrument having a tiltable laser beam axis and tilt detectors
US5485266A (en) * 1992-07-09 1996-01-16 Kabushiki Kaisha Topcon Laser beam survey instrument having a tiltable laser beam axis and tilt detectors
US5446635A (en) * 1993-06-24 1995-08-29 Quarton, Inc. Laser assembly for marking a line on a workpiece for guiding a cutting tool
US5531031A (en) * 1995-01-20 1996-07-02 Green; Kevin D. Laser level and square
US6249338B1 (en) * 1995-02-14 2001-06-19 Kabushiki Kaisha Topcon Laser survey instrument
US5754582A (en) * 1995-04-03 1998-05-19 Momentum Laser, Inc. Laser level
US6262801B1 (en) * 1995-05-25 2001-07-17 Kabushiki Kaisha Topcon Laser reference level setting device
US5745623A (en) * 1995-08-17 1998-04-28 Kabushiki Kaisha Topcon Laser system for surveying
US5760932A (en) * 1995-08-30 1998-06-02 Mirage Development Ltd. Target for laser leveling systems
US5742387A (en) * 1995-12-21 1998-04-21 Ammann Lasertechnik Ag Laser beam levelling device and process for operating a laser beam levelling device and associated contrivance
US5838431A (en) * 1996-01-16 1998-11-17 Asahi Kogaku Kogyo Kabushiki Kaisha Laser marking device
US5898490A (en) * 1996-03-19 1999-04-27 Kabushiki Kaisha Topcon Laser survey instrument
US5836081A (en) * 1996-05-29 1998-11-17 Charles F. Schroeder Light beam leveling means and method
US5960551A (en) * 1996-07-22 1999-10-05 Kabushiki Kaisha Topcon Rotary laser irradiating system
US6351890B1 (en) * 1996-09-10 2002-03-05 Nigel Emlyn Williams Laser light referencing tool
US5946087A (en) * 1997-01-21 1999-08-31 Kabushiki Kaisha Topcon Laser survey instrument
US6178649B1 (en) * 1998-01-16 2001-01-30 Chyi-Yiing Wu Optical calibrating apparatus for emitting datum laser line
US6014211A (en) * 1998-01-20 2000-01-11 Laser Reference Device and method for providing a laser level plane
US6151106A (en) * 1998-02-09 2000-11-21 Kabushiki Kaisha Topcon Laser irradiation system
US6493067B1 (en) * 1998-12-29 2002-12-10 Kabushiki Kaisha Topcon Rotary laser irradiating system
US6055046A (en) * 1999-02-01 2000-04-25 Spectra Precision, Inc. System and method for aligning a laser transmitter
US6222625B1 (en) * 1999-08-13 2001-04-24 William R. Johnston Adjustable laser string square
USD476584S1 (en) * 2001-02-23 2003-07-01 Black & Decker Inc. Laser level
US6606798B2 (en) * 2001-02-23 2003-08-19 Black & Decker Inc. Laser level
US6735879B2 (en) * 2001-05-15 2004-05-18 Irwin Industrial Tool Company Laser line generating device
USD475938S1 (en) * 2002-07-09 2003-06-17 Black & Decker Inc. Laser level
US6739062B2 (en) * 2002-08-09 2004-05-25 Quarton, Inc Universal angle means

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100016931A1 (en) * 2001-03-02 2010-01-21 Therapy Products, Inc. Method of Reducing Cholesterol Using Laser Energy
US20050022399A1 (en) * 2003-08-01 2005-02-03 Wheeler Thomas J. Laser level
US20060095099A1 (en) * 2004-02-04 2006-05-04 Shanks Steven C Stand-alone scanning laser device
US7922751B2 (en) 2004-02-04 2011-04-12 Erchonia Corporation Stand-alone scanning laser device
US7947067B2 (en) * 2004-02-04 2011-05-24 Erchonia Corporation Scanning treatment laser with sweep beam spot and universal carriage
US20060224218A1 (en) * 2004-02-04 2006-10-05 Kevin Tucek Scanning treatment laser with sweep beam spot and universal carriage
US20070135870A1 (en) * 2004-02-04 2007-06-14 Hearingmed Laser Technologies, Llc Method for treating hearing loss
US20070056174A1 (en) * 2004-03-18 2007-03-15 Black & Decker Inc. Laser level
US7481002B2 (en) 2004-03-18 2009-01-27 Black & Decker Inc. Laser level
US20080066329A1 (en) * 2004-03-18 2008-03-20 Bascom James P Laser level
US20050204570A1 (en) * 2004-03-18 2005-09-22 Bascom James P Laser level
US7134211B2 (en) 2004-03-18 2006-11-14 Black & Decker Inc. Laser level
US7310886B2 (en) 2004-03-18 2007-12-25 Black & Decker Inc. Laser level
US20050226305A1 (en) * 2004-04-09 2005-10-13 Hsu Chao F Laser beam projection device having a rotary locking structure
US20050246912A1 (en) * 2004-05-07 2005-11-10 Marshall James D Line generating device
US7121010B2 (en) * 2004-05-07 2006-10-17 Black & Decker Inc. Line generating device
US20050278966A1 (en) * 2004-06-18 2005-12-22 Liu Carl Y Laser level
US20060016083A1 (en) * 2004-07-23 2006-01-26 Index Measuring Tape Co., Ltd. Level laser indicator
EP1627710A1 (en) * 2004-08-17 2006-02-22 Techtronic Industries Co., Ltd. Modular tool assembly having a vacuum mounting arrangement
US20100324426A1 (en) * 2004-10-29 2010-12-23 Erchonia Corporation Full-Body Laser Scanner and Method of Mapping and Contouring the Body
US8439959B2 (en) 2004-10-29 2013-05-14 Erchonia Corporation Full-body laser scanner and method of mapping and contouring the body
US20060112576A1 (en) * 2004-11-30 2006-06-01 Lu Jian H Hand-held laser level with retractable adhesive-type retention feature
US7367129B2 (en) 2004-11-30 2008-05-06 Johnson Level & Tool Mfg. Co., Inc. Hand-held laser level with retractable adhesive-type retention feature
US7797844B2 (en) 2005-11-15 2010-09-21 Black & Decker Light line generating assembly
US20070109808A1 (en) * 2005-11-15 2007-05-17 Hobden Robert J Light line generating assembly
US20090132012A1 (en) * 2007-11-16 2009-05-21 Therapy Products, Inc. Method for pretreating patient before surgery
US20100196497A1 (en) * 2009-02-02 2010-08-05 Therapy Products, Inc. Method of Treating Tissue Using Platelet-Rich Plasma in Combination with Low-Level Laser Therapy
KR20140114300A (en) * 2013-03-18 2014-09-26 가부시키가이샤 미쓰토요 Shape measuring apparatus
KR102106389B1 (en) * 2013-03-18 2020-05-04 가부시키가이샤 미쓰토요 Shape measuring apparatus
US10309776B2 (en) * 2016-05-24 2019-06-04 Paul Joseph Doeren Laser alignment guide
USD872602S1 (en) 2017-05-24 2020-01-14 Paul Joseph Doeren Conduit tool

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US7055252B2 (en) 2006-06-06
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GB2398385B (en) 2007-03-28
US20040205972A2 (en) 2004-10-21

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