Luba M Krumszyn

53302060, Jul 19, 1994

Oct 18, 1993

8/136908

Luba M. Krumszyn - Yonkers NY
Zinovi Khabal - Yonkers NY

B23B 5112

279144

An apparatus for adapting drill bits and similar tools to a power tool includes a drive shaft which includes a threaded end portion which is connected to a chuck. An intermediate portion of the drive shaft supports a pair of ball bearings which are located in a first cavity, formed in a collar which encircles the drive shaft. The drive shaft has a second end portion which projects into a second cavity formed in the collar. The second cavity includes a threaded portion for connection to a power tool and the second end portion has a hexagonal cross-section.

54431999, Aug 22, 1995

Dec 3, 1993

8/161068

Luba M. Krumszyn - Yonkers NY
Zinovi Khabal - Yonkers NY

B23K 3702

228 29

An apparatus for performance of cutting and welding operations includes an enclosure which encloses a drive motor and which supports a drive wheel and an idler wheel for driving the enclosure along a track. A first support rod projects from the enclosure and a second support rod is adjustably mounted on the first support rod. A torch for cutting and welding is adjustably mounted on the second support rod and a variety of linear and curved tracks are provided, thereby facilitating performances of cutting and welding operations on a range of workpiece configurations.

54387612, Aug 8, 1995

Sep 16, 1993

8/121540

Luba M. Krumszyn - Yonkers NY
Zinovi Khabal - Yonkers NY

B43L 710
G01C 924

33451

A level apparatus incorporates a ruler member for making linear measurements and a level support assembly which is rotatably mounted on the ruler member. The level support assembly is mounted in the center of the ruler member and includes a pair of brackets which support a cylindrically shaped level. The level support assembly includes a circular array of indicia for making angular measurements.