IP Library › Granted Patent US 7,392,592
Granted Patent B2
US 7,392,592 · App. 11/539,787 · Granted Jul 1, 2008

Ruggedized laser level

Assignee: Milwaukee Electric Tool Corporation
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Quick Facts
Patent No.
US 7,392,592
App. No.
11/539,787
Granted
Jul 1, 2008
Kind
B2
Abstract

A ruggedized laser level. The laser level includes a housing, a base, a protective structure, and a laser assembly. The base and protective structure combine to protect the laser level from damage due to being dropped or impacted. The laser assembly can provide a 360° beam or a five point dot. Some embodiments of the laser level include a plurality of power tool battery charging circuits.

Claims (39)

1. A laser level comprising:

a housing;

a protective structure associated with the housing and configured to protect the laser level and a power tool battery removably attached to the housing from an impact;

at least one light source, supported by the housing and configured to project at least one beam of visible light onto a surface external to the laser level;

at least one indicator configured to indicate a position of the housing relative to a vertical plane and a horizontal plane; and

at least one of a first outlet integrated in the housing and a second outlet integrated into a plug of a power cord of the laser level, the first and second outlets configured to provide power from the power cord to an external device interfaced therewith.

2. A laser level comprising:

a housing;

a protective structure associated with the housing and configured to protect the laser level and a power tool battery removably attached to the housing from an impact;

at least one light source, supported by the housing and configured to project at least one beam of visible light onto a surface external to the laser level;

at least one indicator configured to indicate a position of the housing relative to a vertical plane and a horizontal plane; and

a plurality of charging circuits for charging a plurality of power tool batteries, the plurality of charging circuits operating independently of each other.

3. The laser level of claim 2 , wherein the plurality of charging circuits are configured to charge batteries having a plurality of battery chemistries and a plurality of nominal voltages.

4. A battery charger comprising:

a housing configured to support a power tool battery that is removably interfaced with the battery charger;

a power cord;

a charging circuit supported by the housing and electrically connectable to a power source and to the battery, the charging circuit configured to provide charging current to the battery; and

a light source configured to project at least one beam of visible light onto a surface external to the battery charger.

5. The battery charger of claim 4 , further comprising a protective structure associated with the housing and configured to protect the battery charger from an impact.

6. The battery charger of claim 5 , wherein the protective structure is configured to protect the removable interfaced battery.

7. The battery charger of claim 4 , wherein the light source is configured to be automatically positioned such that the at least one beam of visible light is projected on at least one of a vertical plane and a horizontal plane.

8. The battery charger of claim 4 , wherein power is provided to the battery charger by at least one of a power tool battery and the power cord connected to the power source.

9. The battery charger of claim 4 , further comprising an audio device.

10. The battery charger of claim 4 , further comprising at least one of a first outlet integrated in the housing and a second outlet integrated into a plug of the power cord of the battery charger, the first and second outlets configured to provide power from the power cord to an external device interfaced therewith.

11. The battery charger of claim 4 , further comprising one or more indicators configured to provide at least one of an indication of a low-battery condition and an indication that the battery charger has been moved out of level.

12. The battery charger of claim 4 , wherein the beam is at least one of a dot, a line, a five point beam, and a continuous line projected 360 degrees around the battery charger.

13. The battery charger of claim 4 , wherein the laser level is operable in a plurality of power modes to adjust a brightness of the at least one beam.

14. The battery charger of claim 4 , further comprising a plurality of charging circuits for charging a plurality of power tool batteries, the plurality of charging circuits operating independently of each other.

15. The battery charger of claim 14 , wherein the plurality of charging circuits are configured to charge batteries having a plurality of battery chemistries and a plurality of nominal voltages.

16. The battery charger of claim 4 , wherein power is provided by a battery supplying a voltage between 4V and 50V.

17. The battery charger of claim 4 , further comprising a plurality of light sources configured to provide overlapping beams such that the beams form a continuous visible line that is not obstructed by a structure of the battery charger.

18. A power tool comprising:

a housing;

a base having a plurality of bumpers constructed of an impact absorbing material;

a handle having at least one arm and a grip;

a light source supported by the housing and configured to project a beam of visible light onto a surface external to the tool; and

at least one charging circuit supported by the housing, each charging circuit electrically connectable to a power source and at least one removably interfaced battery, and configured to provide a charging current to the at least one battery.

19. The power tool of claim 18 , further comprising at least one of a first outlet integrated in the housing and a second outlet integrated into a plug of the power cord of the power tool, the first and second outlets configured to provide power from the power cord to an external device interfaced therewith.

20. The power tool of claim 18 , further comprising one or more indicators configured to provide at least one of an indication of a low-battery condition and an indication that the power tool has been moved out of level.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 28, 2007
From: BUBLITZ, SCOTT; ZICK, JONATHAN; OTTENS-RENDON, MELISSA; DUECKER, DAVID
To: MILWAUKEE ELECTRIC TOOL CORPORATION
Reel/Frame 018941/0589 →
Continuity (2)
Provisional Application 6072510600 · Oct 7, 2005
Related Publication 20070130785A1 · Jun 14, 2007