Metal working – Means to assemble or disassemble – Overedge assembling means
Reexamination Certificate
2011-04-19
2011-04-19
Jones, David B (Department: 3725)
Metal working
Means to assemble or disassemble
Overedge assembling means
C029S243523, C072S391400
Reexamination Certificate
active
07926157
ABSTRACT:
A breakstem rivet placing tool conventionally includes a flow restrictions for hydraulic fluid used to drive the tool in a stem pulling direction. This serves to prevent recoil of the tool due to rapid acceleration of an internal piston when the stem of the breakstem rivet breaks. Prior art flow restrictions create a jet of high velocity hydraulic fluid into the tool which may damage components by erosion. A revised fluid damper valve deflects and/or diffuses the fluid flow to avoid damage by erosion.
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PCT International Search Report dated Jun. 5, 2007 which issued in connection with corresponding International Application No. PCT/GB2007/001000.
Gilbert Terence
Seewraj Angraj Kumar
Avdel UK Limited
Hahn Loeser & Parks LLP
Jones David B
Stein Arland T.
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