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US 6,041,510 AGranted
Extension level, square and length gauge
OwnerCharles A. Huffinventor
Life of this patent
Estimating the term…
Abstract
This invention relates to an extendable level which, by means of two slidable extension members on a central body, can more than double its collapsible length. The invention comprises a device which can lock the level in any length from fully collapsed to fully extended. An attachment is provided which can convert the invented level into a large carpenter's square. Further, the extension level, with a scale on its top edge, can measure inside lengths between opposing wall surfaces.
Claims20
An extensible level comprising:
- a central body having a top center flange, a bottom center flange and a center web interconnecting said top and bottom center flanges, said top and bottom center flanges having central body top and bottom external center planar edges, said external center planar edges extending the full length of said central body,
- said top center flange having a lateral center extension, said lateral center extension being formed with a longitudinal groove, said groove opening upward,
- a first extension body parallel to and on one side of said central body having a top extension flange, a bottom extension flange and an extension web interconnecting said top and bottom extension flanges, said extension flanges having external top and bottom extension planar edges, respectively,
- said top extension flange having a top lateral extension member having a lower surface formed with a top tongue, said top tongue fitting downward into said top longitudinal groove, said extension body being longitudinally slidable relative to said central body by sliding movement of said top tongue in said top groove, each said center planar edge being co-planar with one of said extension planar edges,
- said first extension body lying totally on one side only of said center web.
2 more elements
Dependencies are inferred from the claim text.