Pier lifting for elevating building footings

Description

FIG. 1 is a perspective view of a pier lifter for elevating building footings showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left side elevational view thereof with the right side being a mirror image;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a front elevational view thereof; and,

FIG. 6 is a rear elevational view thereof.

The broken line showing of a pipe shaft is for illustrative purposes only and forms no part of the claimed design.

Referenced Cited
U.S. Patent Documents
570370 October 1896 Breuchaud
598418 February 1898 Gillespie
2982103 May 1961 Revesz
3685301 August 1972 Heacox
3796055 March 1974 Mahony
3902326 September 1975 Langenbach, Jr.
4634319 January 6, 1987 May
4673315 June 16, 1987 Shaw et al.
4678373 July 7, 1987 Langebach, Jr.
4765777 August 23, 1988 Gregory
4854782 August 8, 1989 May
Other references
  • Brochure-Haynes Construction Co., Ballwin, MO. "Permament Piering System" No date. Brochure-The Perma Jack System-#4 Perma-Jack System being Installed.-No date, (See above-U.S. Pat. No. 3,902,326). Brochure-Atlas Piers-Copyright 1986-Specifications List.
Patent History
Patent number: D329728
Type: Grant
Filed: Feb 28, 1990
Date of Patent: Sep 22, 1992
Assignee: Central States Waterproofing of Missouri, Inc. (St. Louis, MO)
Inventor: Francis P. Ladek (St. Louis, MO)
Primary Examiner: Wallace R. Burke
Assistant Examiner: H. Baynham
Attorney: Paul M. Denk
Application Number: 7/486,718
Classifications