George Lukowski

US Patent:

8628062, Jan 14, 2014

Filed:

Dec 11, 2007

Appl. No.:

12/001368

Inventors:

Raju Alluru - Northville MI, US
George W. Lukowski - Bloomfield Hills MI, US

International Classification:

B66F 3/08

US Classification:

254126, 254122

Abstract:

The present invention is a jack assembly having a first and second upper bracket pivotally connected to a support member and each having at least one strengthening bead and at least one rolled edge. A first lower bracket is pivotally connected to the first upper bracket using a non-threaded trunnion and a bearing through which a threaded rod extends. A second lower bracket is pivotally connected to the second upper bracket using a threaded trunnion through which the threaded rod also extends. The brackets are tapered for strength. The first and second lower brackets are pivotally connected to a base having an enclosed keyhole orifice for storage of the jack assembly. At least one strengthening flange is formed in both the first and second lower bracket.

US Patent:

50164619, May 21, 1991

Filed:

Sep 1, 1989

Appl. No.:

7/402067

Inventors:

William R. Walker - Rochester MI
George W. Lukowski - Bloomfield Hills MI

Assignee:

Hydro-Craft, Inc. - Rochester Hills MI

International Classification:

B21D 2806

US Classification:

72336

Abstract:

A progressive die apparatus and method for cold forming weld adapters. A progressive die apparatus, preferably having at least four working stations and several idle stations, is used to form, weld adapters from rectangular bar stock having a thickness of at least about 3/8 inch. Plain-carbon steel bar stock material or other weldable metal material is successively fed through the progressive die apparatus, which is preferably installed in a knuckle-joint power press. The cold forming method includes the following steps: (a) at a first working station piercing the first hole; (b) at a second working station coining the stock material in the area surrounding the first hole to define a collar-like configuration including a hollow region for receiving the fastener; (c) at a third working station repiercing said stock material to remove material that was displaced in the first hole during the coining step; (d) successively advancing stock material from the first to the last working stations; and (e) at a fourth working station cutting the stock material after steps (a) through (c).