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Level

a level and level technology, applied in the field of level, can solve the problems of inability to use a four-foot level, difficulty or inconvenience in using a conventional level,

Inactive Publication Date: 2002-06-20
CROWE JASON R +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fact that conventional levels are available only in increments of about 2 feet in length gives rise to difficulty or inconvenience in using the conventional level.
Obviously, since the back wall is only 3'6"wide, you cannot use a four foot level because there is not sufficient space

Method used

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Examples

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Embodiment Construction

[0010] The illustrated level comprises a frame 2 and two rails 4A and 4B. In the following description, the suffix A or B is used when it is necessary or helpful to distinguish between the two rails or elements that are associated with the two rails. Otherwise, no suffix is used.

[0011] The frame 2 is made from a length segment of an aluminum alloy extrusion and is generally I-shaped in cross-section, having two spaced parallel guide members 8 connected by a web plate 12 so that two channels 20 are defined on opposite sides respectively of the web plate 12. Each member 8 has at each edge a lip or flange 16 projecting toward the other member 8. The frame has two parallel guide surfaces 24, only one of which can be seen in the drawings.

[0012] Each rail 4 includes a slide 28 and a frame extender 32 which is attached to the slide.

[0013] The frame extender 32 is made of a length segment of the same extrusion as is used to make the frame 2 and consequently it includes two parallel guide me...

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PUM

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Abstract

A level comprises a frame defining first and second parallel channels and first and second rails fitted slidingly in the first and second channels respectively. The level is adjustable in length by sliding the rails in the respective channels of the frame.

Description

Related Application[0001] This application is a continuation of and claims priority to U.S. Patent Application Serial No. 09 / 302,014, filed Apr. 29, 1999 for "Level," issuing Sep. 25, 2001 as U.S. Pat. No. 6,293,023.[0002] This invention relates to a level.[0003] The conventional carpenter's level, which is used for testing whether a nominally horizontal (or vertical) surface is in fact horizontal (or vertical), within an acceptable tolerance, comprises a frame, typically made of a metal such as aluminum alloy, having at least one flat guide surface and two bubble vials mounted in the frame. The level is positioned with the guide surface against the surface to be tested. One vial is oriented relative to the guide surface for testing a nominally vertical surface and the other is oriented for testing a nominally horizontal surface. The typical level is about 2 feet long, although longer levels, e.g. four feet or six feet long, are also available.[0004] The fact that conventional level...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G01C9/28
CPCG01C9/28
Inventor SCHOOLEY, JACK M.
Owner CROWE JASON R