Pump transmission with PTO gear and independently clutched impeller
AssigneeW.S. Darley & Co.
InventorsDouglas W. Seitz, Michael C. Ruthy
Life of this patent
Estimating the term…
Abstract
A firefighting pump transmission for use with an emergency vehicle pump comprising a housing receiving a drive shaft, the drive shaft having a PTO gear affixed thereto within the housing, an impeller shaft for turning an impeller of a pump, and means for selectively powering the impeller shaft from the drive shaft, the means for powering may include a multi-disk clutch. The transmission allows for powering the PTO gear while the impeller shaft is idle. A Commercially Available PTO device may be mounted to the housing to power a variety of devices.
Claims21
A transmission comprising:
- a housing having a port, said housing configured to receive a PTO device having a driven gear which extends through said port;
- an exit shaft extending from said housing;
- a PTO driving gear affixed to an input drive shaft, said input drive shaft extending into said housing, said PTO driving gear affixed to said input drive shaft within said housing and configured to be driven by said input drive shaft and configured to drive a PTO device connected to said housing where the PTO device has a driven gear which extends through said port, said PTO driving gear positioned such that no portion of said PTO driving gear protrudes from said port, at least a portion of said input drive shaft positioned external said housing, said at least a portion configured to axially connect to, and receive power from, an external transmission;
- a clutch driving gear affixed to said input drive shaft;
- and
- a clutch configured to power said exit shaft from said input drive shaft.
A transmission for selectively powering an output shaft, said transmission comprising:
- a PTO driving gear configured to drive an external PTO device, said PTO driving gear affixed to an input drive shaft within a housing of said transmission, said input drive shaft having a connector portion positioned external said housing and configured to connect to and be driven by a shaft of an external transmission oriented axially from said input drive shaft;
- a clutch driving gear affixed to said input drive shaft and meshed with a clutch gear of a clutch,
- said clutch configured to power the output shaft from said input drive shaft;
- and
- said housing including a port configured to receive a gear of a device to be driven by said PTO driving gear.
A firefighting device for selectively powering an impeller shaft, said firefighting device comprising:
- a housing;
- a PTO driving gear positioned at least partially within said housing, said PTO driving gear affixed to and driven by an input drive shaft of said firefighting device, at least a portion of said input drive shaft positioned external said housing, said at least a portion having an external transmission connector configured to connect to an external transmission in an axial direction of said input drive shaft to power said input drive shaft;
- a clutch driving gear affixed to said input drive shaft;
- a clutch configured to power the impeller shaft from said input drive shaft;
- and
- said housing having a port configured to receive a gear of a PTO device to be driven by said PTO driving gear.
Dependencies are inferred from the claim text.