Ripper

Ripper

Ripper may refer to:* Jack the Ripper, a pseudonym given to an unidentified serial killer active in the largely impoverished Whitechapel area and adjacent districts of London in the latter half of 1888...

 is a racquetball

Racquetball

For other sports often called "paddleball", see Paddleball .Racquetball is a racquet sport played with a hollow rubber ball in an indoor or outdoor court...

 racquet

Racquet

A racquet or racket is a sports implement consisting of a handled frame with an open hoop across which a network of cord is stretched tightly. It is used for striking a ball in such games as squash, tennis, racquetball, and badminton...

. It is labeled with the word titanium

Titanium

Titanium is a chemical element with the symbol Ti and atomic number 22. It has a low density and is a strong, lustrous, corrosion-resistant transition metal with a silver color....

, the slogan "Crushing power", the registered trademarks "Wilson

Wilson Sporting Goods

The Wilson Sporting Goods Company is a sports equipment manufacturer based in Chicago, Illinois, and currently is a foreign subsidiary of the Finnish company Amer Sports....

", as well as the "U.S.Pat.No.6,935,975". According to the online United States Patent and Trademark Office

United States Patent and Trademark Office

The United States Patent and Trademark Office is an agency in the United States Department of Commerce that issues patents to inventors and businesses for their inventions, and trademark registration for product and intellectual property identification.The USPTO is based in Alexandria, Virginia,...

 as of May 11, 2007 there were only two "live" trademarks for the full mark, "Ripper". The racquet is also labeled with "Ripper" followed by the trademark symbol "TM

TM

-Commerce:* Trademark * TM Importing , Largest Dokha Tobacoo Exporter with "TM" as its Logo in Denver, CO USA* LAM Mozambique Airlines , with "TM" as its IATA airline designator...

". Wilson Sporting Goods

Wilson Sporting Goods

The Wilson Sporting Goods Company is a sports equipment manufacturer based in Chicago, Illinois, and currently is a foreign subsidiary of the Finnish company Amer Sports....

 claims that this racquet is made in China, has a:

• weight of 215 gram
  Gram
  The gram is a metric system unit of mass....
  
  s,
• head size of 108 square inch
  Square inch
  A square inch is a unit of area, equal to the area of a square with sides of one inch. The following symbols are used to denote square inches:*square in*sq inches, sq inch, sq in*inches/-2, inch/-2, in/-2...
  
  es,
• string tension of 33 to 35 lbf
  Pound-force
  The pound force is a unit of force in some systems of measurement including English engineering units and British gravitational units.- Definitions :...
  
  , and
• an even balance.