Hardness tester

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FIG. 1 is a front, right-side, top perspective view of the hardness tester;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a right-side elevational view thereof;

FIG. 5 is a left-side elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is an enlarged view of the area bounded by arrow 8′ and 8″ in FIG. 4.

The broken lines depict unclaimed parts of the hardness tester, and thus form no part of the claimed design. The dot-dot-dash chain lines depict boundaries of the enlarged area, and thus form no part of the claimed design.


The ornamental design for a hardness tester, as shown and described.

Referenced Cited
U.S. Patent Documents
4442705 April 17, 1984 Lang
D283599 April 29, 1986 Biddle, Jr. et al.
D356515 March 21, 1995 Fukumoto et al.
D394015 May 5, 1998 Kellstedt, Jr. et al.
D704582 May 13, 2014 Muraoka et al.
D719039 December 9, 2014 Chang
D731904 June 16, 2015 Stohr
D783424 April 11, 2017 Matsumiya
20140182364 July 3, 2014 Koshimizu
20170248415 August 31, 2017 Matsumiya
Other references
  • “Rockwell Hardness Testing Machines, HR-300/400/500 Series,” Mitutoyo, Bulletin No. 2025(3), Jun. 2017, pp. 1-8.
Patent History
Patent number: D848882
Type: Grant
Filed: Jan 11, 2018
Date of Patent: May 21, 2019
Inventors: Sadayuki Matsumiya (Sagamihara), Yoshiro Asano (Tokyo), Masaru Kawazoe (Kure), Fumihiko Koshimizu (Zama), Shigeru Ohtani (Kawasaki), Yu Sugai (Hadano)
Primary Examiner: Antoine Duval Davis
Application Number: 29/632,997