(under the class definition) Devices comprising an apparatus under the class definition combined with a means for giving a sharp blow to the apparatus or part thereof to free it from the well.
(1) Note. The jarring function must be specifically described for classification in this subclass and not left to inference.
SEE OR SEARCH THIS CLASS, SUBCLASS:
177.1+, for agitating, wiping, vibrating or formation fracturing apparatus.
196+, for packers or plugs with a telescopic central support which is adapted to give a jarring blow.
SEE OR SEARCH CLASS
173, Tool Driving or Impacting, 90+, for above or below ground impacting devices (other than lost motion connections in an earth bore) of general utility for imparting blows to a tool or the like.
175, Boring or Penetrating the Earth,
293+, for below ground hammer or impact members, either (1) claiming a specific earth cutting means or having some feature related to earth boring such as a wall engaging guide or packer on a shaft being used in a boring operation or (2) comprising a lost motion connection.
294, Handling: Hand and Hoist-Line Implements,
86.18, for a well grapple with a releasing means responsive to a jarring force and subclass 86.23 for a well grapple with an impact means.
