Tools – Hammer
Reexamination Certificate
2000-10-11
2003-03-25
Zimmerman, John J. (Department: 1775)
Tools
Hammer
C081S022000
Reexamination Certificate
active
06536308
ABSTRACT:
BACKGROUND OF THE INVENTION
Tools which are swung or otherwise handled by users have weight and hardness characteristics. A tool made in part of a titanium alloy is lighter (has less weight per unit volume) than a tool made of steel since titanium alloys are less dense than steel. Titanium-containing tools require less effort to swing or lift. To accomplish equivalent energy at impact when the tool is used to strike objects, the tool is swung at higher speeds. Hammer heads made of titanium are lighter and easier to swing than steel heads; however, titanium is a softer material than hardened steel causing wear or distortion on and near the nail striking surface. Titanium hammers “mushroom” or otherwise deform at the striking face portion. Further, titanium hammers can create sparks when struck against certain surfaces requiring precautions to be taken.
Other steel or iron tools in use have similar drawbacks in that they are heavy enough to present a problem to users when repeatedly swung or lifted such as wedges used in log splitting and repeatedly placed in metal working mechanisms and then removed.
SUMMARY OF THE INVENTION
Broadly, the present invention comprises a tool or portion of a tool which has a first component that is composed of a material less dense than steel and therefore easier for the user to handle and a second tool component that has characteristics that are harder or otherwise useful as a working tool portion. The components are connected together.
The tool may be a tool that is swung or otherwise manipulated by the user such as a hammer or wedge used in splitting logs or may be a tool placed in and removed from a material working machine which uses tools in which weight reduction is advantageous.
The invention further includes unique arrangements for attaching the tool components together.
REFERENCES:
patent: 974021 (1910-10-01), Blake
patent: 988402 (1911-04-01), Strandberg
patent: 2566517 (1951-09-01), Dicks
patent: 2776689 (1957-01-01), Falzone
patent: 3721282 (1973-03-01), Hayes et al.
patent: 3793656 (1974-02-01), Songer et al.
patent: 3942567 (1976-03-01), Richilano
patent: 4023221 (1977-05-01), Cadman
patent: 4091871 (1978-05-01), Chiaramonte et al.
patent: 4139930 (1979-02-01), Cox
patent: 4465115 (1984-08-01), Palomera
patent: 4876928 (1989-10-01), Gaulin
patent: 5024437 (1991-06-01), Anderson
patent: 5028049 (1991-07-01), McKeighen
patent: 5088174 (1992-02-01), Hull et al.
patent: 5094383 (1992-03-01), Anderson et al.
patent: 5141353 (1992-08-01), Meredith et al.
patent: 5255575 (1993-10-01), Williams
patent: 5359911 (1994-11-01), Kruesi
patent: 5499984 (1996-03-01), Steiner et al.
patent: 5657541 (1997-08-01), Hickok et al.
patent: 5766091 (1998-06-01), Humphrey et al.
patent: 5817962 (1998-10-01), Behrenfeld
patent: 5863268 (1999-01-01), Birch
patent: 5879243 (1999-03-01), Hackman
patent: 5906550 (1999-05-01), Kingston
patent: 2 039 815 (1980-08-01), None
patent: 2-95871 (1990-04-01), None
patent: 06-205856 (1994-07-01), None
patent: 10-314346 (1998-12-01), None
patent: 11-004920 (1999-01-01), None
Annalee Yassi; Repetitive strain injuries; The Lancet, vol. 349, Mar. 29, 1997, pp. 943-947, University of Manitoba, Canada.
Maier Philip M.
Martinez Mark R.
Thorne John K.
Yost Thomas E.
Sturm, Ruger & Company, In.
Zimmerman John J.
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