Device for extracting soil cores for laboratory analysis

Skip to: Description  ·  References Cited  · Patent History  ·  Patent History
Description

FIG. 1 is a front elevation view of a device for extracting soil cores for laboratory analysis showing my new design;

FIG. 2 is a side elevation thereof seen from the left side of FIG. 1;

FIG. 3 is a side elevation thereof seen from the right side of FIG. 1;

FIG. 4 is a rear elevation thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and

FIG. 7 is a top perspective view thereof showing the device in open condition.

Referenced Cited
U.S. Patent Documents
1109446 September 1914 Melberg
1857693 May 1932 Quintrell
2030770 February 1936 Smith
2210440 August 1940 Avary
3218869 November 1965 Fields et al.
3464732 September 1969 Woodward
3707197 December 1972 Walesch et al.
4117896 October 3, 1978 Weber
Foreign Patent Documents
71457 August 1947 NOX
162171 April 1921 GBX
Patent History
Patent number: D269844
Type: Grant
Filed: Jan 12, 1981
Date of Patent: Jul 26, 1983
Assignee: Mabel J. Hackerson (Beardstown, IL)
Inventor: John V. Hackerson (Beardstown, IL)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Horace B. Fay, Jr.
Law Firm: McCaleb, Lucas & Brugman
Application Number: 6/224,375
Classifications
Current U.S. Class: D 8/7; Core-retaining Or Severing Means (175/249); 73/86444; Dibbles (111/99); D 8/1
International Classification: D0805;