Kapro Industries Limited

Emanuel H Szumer

Duane William Zugel

Mordechai Schwartz

Stephen Sweet

An extension set for a spirit level having an elongated leveling face for setting on a surface and defining a nominal working length, an opposite face to the leveling face, a pair of opposite major side surfaces, and a pair of opposite end sections, the extension set including a pair of discrete elongated U-shaped profile spirit level extenders for lengthwise accommodating an end section of the spirit level with its leveling face facing towards the surface and its opposite face facing away therefrom on spaced apart alignment on the surface such that the pair of spirit level extenders partially underlie the spirit level's leveling face and their remaining portions extend lengthwise therebeyond for extending its nominal working length, and a pair of spirit level clamps for mounting on the pair of spirit level extenders for clamping the spirit level thereon.

Extension set for spirit levels

A spirit level comprising a body having a level face for setting a surface, at least one bubble vial mounted in the body, the bubble vial having a longitudinal axis generally perpendicular to the level face, and an optical transfer element fixed to the body which transfers an image of the bubble vial to a viewing plane generally parallel to the level face.

Spirit level

Hand tool () including a pair of retainer clips (A,B) for securing a cylindrical level vial () in a suitable recess (), and method of assembly therefor.

Retainer clips for securing a cylindrical level vial

A spirit level including a body having a level face for setting a surface and a non-setting face extending away from said level face, at least one bubble vial mounted in the body, and at least one hand-grip aperture, defining an inner perimeter, formed in the body and which extends through the non-setting face, characterized by the perimeter of the at least one hand-grip aperture being at least partially coated with an elastomer.

Spirit level with hand grips

Carpenter square

Ruler with sliding bubble vials

A spirit level including a body having a level face for setting a surface, and a plurality of bubble vials each mounted in a bubble vial housing, the bubble vial housings being mounted in the body, each the bubble vial having a longitudinal axis, called a vial axis, and each the bubble vial housing having a longitudinal axis, called a housing axis, wherein an angular orientation of the vial axis of one the bubble vials with respect to the level face is different than an angular orientation of the vial axis of another the bubble vial with respect to the level face, the difference in angular orientation being in the range of 0&deg;-30&deg;. Other possible ranges include 0&deg;-20&deg;, 0&deg;-10&deg;, 0&deg;-5&deg;, 0&deg;-3&deg;, 0&deg;-2&deg;, or 0&deg;-1&deg;, for example.

Spirit level with multiple bubble vials

A post level including a pair of arms pivotally attached to each other at a hinge, each arm defining at least one level face for plumbing a surface, and at least one bubble vial mounted on at least one of the arms on a surface generally opposite to the at least one level face, wherein the arms may be swung about the hinge so as to be positioned generally parallel with each other with the at least one bubble vial being between the arms.

Growing community of inventors

Bikat Beit Hakerem, Israel

Emanuel H Szumer