Vibratory percussion rammers and methods of making vibratory percussion rammers
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Nov 15, 2011
Grant Date -
Feb 11, 2010
app pub date -
Aug 6, 2008
filing date -
Aug 6, 2008
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Vibratory percussion rammers and methods of making vibratory percussion rammers are provided. In one example, a vibratory percussion rammer includes a gear box, a percussion delivery unit extending downwardly from the gear box, and one or more slide bearings disposed in the percussion delivery unit between adjacent surfaces of reciprocating metal components. The slide bearings include a sheet of non-metal material that is curved into the shape of a tube having a C-shape in cross section. Slide bearings according to this design can be disposed in the percussion delivery unit to eliminate some or all of the metal-on-metal contact between reciprocating components, including between the ram and shaft assembly, spring box and the guide cylinder, the spring separator and the spring box, and the shaft of a ram and shaft assembly and an upper end of the spring box.
First Claim
Other Claims data not available
