Tool driving or impacting – Automatic control of power operated means – Drive means responsive to torque or speed condition
Reexamination Certificate
2007-05-29
2007-05-29
Nash, Brian D. (Department: 3721)
Tool driving or impacting
Automatic control of power operated means
Drive means responsive to torque or speed condition
C173S218000, C173S168000
Reexamination Certificate
active
11000664
ABSTRACT:
A pneumatic motor having a motor chamber having an inner surface with an eccentric longitudinal axis, a motive gas fluid inlet, and at least one end wall located transversely to the longitudinal axis with an exhaust aperture located therethrough. A rotor is rotatably disposed in the motor chamber on the eccentric longitudinal axis and having a plurality of radial slots, the rotor defining a first rotational position with respect to the longitudinal axis at which the distance between the rotor and the motor chamber is a minimum. A plurality of vanes is slidably carried within the plurality of radial slots and rotationally moving between the fluid inlet and the exhaust aperture during rotation of the rotor. The exhaust aperture is located at a second rotational position with respect to the longitudinal axis such that during rotation of the rotor, the angular distance traveled by each of the plurality of vanes between the first rotational position and the second rotational position in a first rotational direction is greater than 180 degrees.
REFERENCES:
patent: 3610343 (1971-10-01), Bratt
patent: 3661217 (1972-05-01), Maurer
patent: 3767335 (1973-10-01), Kramer et al.
patent: 4578948 (1986-04-01), Hutson et al.
patent: 4822264 (1989-04-01), Kettner
patent: 5007778 (1991-04-01), Hillestad et al.
patent: 5087180 (1992-02-01), Clapp
patent: 5293747 (1994-03-01), Geiger
patent: 5309714 (1994-05-01), Putney et al.
patent: 5346024 (1994-09-01), Geiger et al.
patent: 5689956 (1997-11-01), Reboredo
patent: 5918686 (1999-07-01), Izumisawa
patent: 6082986 (2000-07-01), Seward et al.
patent: 6106255 (2000-08-01), Viegas et al.
patent: 6161627 (2000-12-01), Seith et al.
patent: 6250399 (2001-06-01), Giardino
patent: 6796386 (2004-09-01), Izumisawa et al.
patent: 6880645 (2005-04-01), Izumisawa
patent: 0566227 (1993-10-01), None
patent: 434676 (1935-09-01), None
Austin Karl C.
Livingston Patrick S.
Ingersoll-Rand Company
Michael & Best & Friedrich LLP
Nash Brian D.
LandOfFree
Pneumatic motor improvements and pneumatic tools... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pneumatic motor improvements and pneumatic tools..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pneumatic motor improvements and pneumatic tools... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3735740