Levelling and transit system
First Claim
1. A level comprising:
- an elongated member having a flat top surface and a bottom surface separated by a thickened web;
a selected end of said member having a slotted opening exposed at said end and at said top surface so as to define an opening having 90 degrees of exposure to ambient environment;
a circular module rotatably disposed on said member selected end; and
a laser beam generator secured to said module and being in alignment with said slotted opening for transmission of a laser beam from said member via said slotted opening.
2 Assignments
0 Petitions
Accused Products
Abstract
A device for performing levelling and transit functions is disclosed herein having an elongated member with parallel spaced-apart top and bottom flat surfaces separated by a thickened web. The web includes several cutouts exposing bubble indicators arranged in a variety of orientations and includes a rotary module at one end movably mounting a laser beam generator. The module has a passageway conducting a laser beam to a selected one of several slots or passageways provided in the end of the member in response to manual rotation of the module by the user whereby the beam exits the device in a linear path. The web includes a housing adjacent to the module enclosing electrical circuits, battery power supply and button controls for operation of the laser. A pivoting panel is coextensive with the top flat surface in a stored position while pivotal to a position normal to the top flat surface when used as a corner square. A thumb adjustment screw protrudes from the web through a flat surface to angle the device if desired.
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Citations
11 Claims
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1. A level comprising:
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an elongated member having a flat top surface and a bottom surface separated by a thickened web; a selected end of said member having a slotted opening exposed at said end and at said top surface so as to define an opening having 90 degrees of exposure to ambient environment; a circular module rotatably disposed on said member selected end; and a laser beam generator secured to said module and being in alignment with said slotted opening for transmission of a laser beam from said member via said slotted opening. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A level and transit device comprising:
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an elongated member having flat top and bottom surfaces separated by a thickened web maintaining said surfaces in fixed spaced-apart parallel relationship; said web having a plurality of cutouts; bubble indicators secured in each of said respective cutouts visually exposed from opposite sides of said web and through said flat top surface; a selected end of said member web having a laser module rotatably mounted thereon; said selected end of said member having open-ended passageways opening at said selected end and said top surface; said laser module being movable for conducting the laser beam to a selected one of said member passageways in response to rotation of said laser module; said web includes a housing adjacent to said laser module enclosing a circuit network; a laser beam generator carried on said laser module for producing a linear laser beam; circuit means connecting said circuit network with said laser beam generator; a panel pivotally carried on said member having a storage position and an operative position; said panel coextensive with said top flat surface when in said storage position; said panel extending normal to said top flat surface when in said operative position to constitute a square in cooperation with said top flat surface; said open-ended passageways include a pair of overlapping slots provided in said selected end of said member opening at said selected end and opening at said top surface whereby said laser beam radiates within a 90 degree passageway formed by said overlapping slots; and said open-ended passageways further include a bore provided in said selected end of said member communicating said laser module with said top surface and said bore being angularly disposed with respect to said top flat surface. - View Dependent Claims (10, 11)
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Specification