Joints and connections – Manually releaseable latch type – Having operating mechanism
Reexamination Certificate
2009-11-16
2011-12-06
Ferguson, Michael P (Department: 3679)
Joints and connections
Manually releaseable latch type
Having operating mechanism
C403S325000, C081S177200, C081S177850
Reexamination Certificate
active
08070377
ABSTRACT:
A quick-release coupler includes a rod having first and second sections. The first section includes an end for coupling with a pneumatic tool. The second section extends from the other end of the first section. A sleeve is slideably mounted around the rod and includes an end for releasably coupling a bit. The sleeve includes an axial bore having larger and smaller sections. The larger section has polygonal cross sections corresponding to polygonal cross sections of the first section. A radial bore is formed in the sleeve and in communication with the smaller section. A ball is moveably received in the radial bore and moveably received in a recess of the second section of the rod to releasably engage the sleeve with the bit. A spring is mounted in the larger section of the sleeve for biasing the sleeve towards the other end of the rod.
REFERENCES:
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patent: 2007/0163406 (2007-07-01), Liu
patent: 2008/0141835 (2008-06-01), Davidson
patent: 1457292 (2004-09-01), None
Ferguson Michael P
Kamrath Alan
Kamrath & Associates PA
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