Patent ID: 6792686
Filing Date: 2004-09-21
Classification: G01C

Abstract:
A level comprising:a wall frame structure integrally formed from an open ended section of a hollow metal structure, said wall frame structure including a pair of elongated exterior operative surfaces, each of said operative surfaces connected with a pair of transversely spaced exterior flange surfaces generally defining a width of said operative surfaces; a pair of exterior angular surfaces extending from each pair of spaced flange surfaces in converging relation with one another; a pair of exterior central surfaces each integrally connected with an associated one of the angular surfaces, said central surfaces being spaced apart in the direction of the width of said operative surfaces a distance less than the width of said operative surfaces, wherein said central surfaces are generally parallel with respect to each other; said pair of elongated exterior operative surfaces, said pair of exterior angular surfaces and said pair of exterior central surfaces cooperate to define an outer periphery of said wall frame structure, the outer periphery having a generally I-shaped configuration; wherein an internal configuration of the integrally formed wall frame structure defines a substantially open space; an end member closing the opening at each end of said wall frame structure, each end member having structure cooperating with the configuration of said wall frame structure so as to be fixedly secured in closing relation with respect to the associated end of said wall frame structure; and a level indicating vial system having structure constructed and arranged to cooperate with the configuration of said wall frame structure to fixedly secure the level indicating vial system therein; said wall frame structure having a hand hold assembly within longitudinally elongated aligned openings in said central surfaces, said hand hold assembly having structure constructed and arranged to cooperate with the configuration of said wall frame structure to fixedly secure the hand hold assembly within said elongated aligned openings so as to present a hand hold opening through said central surfaces, wherein said hand hold assembly includes an inner core of relatively hard material and an outer layer of elastomeric material.