Portable pumping system with generator powered clutch assembly
AssigneeGraco Inc.
InventorDuane D. Krohn
Life of this patent
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Abstract
A liquid pumping system adaptable for connection to either an electrical drive motor or an internal combustion engine, wherein a generator and clutch is coupled to the driving source, and a pressure sensing switch is connected to the generator rotor to selectively provide voltage to a rectifier circuit and field winding for the clutch. The energization of the field winding causes the clutch to actuate and thereby causes a mechanical coupling to a reciprocable pump for developing liquid pressure.
Claims15
A portable spraying system adapted for interchangeable power sources, comprising:
- a) a cart having an upper platform for attachment of a pumping assembly and a lower platform for removable attachment of a power source;
- b) a clutch housing attached to said upper platform, said clutch housing having a projecting drive shaft extending over said lower platform, said drive shaft having a drive pulley thereon;
- c) a pump housing attached to said clutch housing, said pump housing having an input drive gear and means for actuating a liquid pump;
- d) a pinion shaft mounted in said clutch housing in axial alignment with said drive shaft, with said pinion shaft extending outwardly from said clutch housing to engage said input drive gear;
- e) a clutch plate affixed to said drive shaft in said clutch housing, and a clutch armature slidably mounted to said pinion shaft;
- f) a generator stator affixed inside said clutch housing and a generator rotor attached to said drive shaft and to said clutch plate;
- and
- g) means for deriving electrical energy from said generator stator for magnetically actuating said armature into contact against said clutch plate.
A portable spraying system adapted for connection to either an electric motor driving source or an internal combustion engine driving source, comprising:
- a) a cart having a frame portion for receiving a driving source and a frame portion for receiving a pump;
- b) a first housing affixed to said frame portion for receiving a pump, said first housing having a drive shaft and pulley extending from a first end at a position elevated above said frame portion for receiving a drive source;
- c) a generator stator and rotor in said first housing, said rotor affixed to said drive shaft and said stator affixed to said first housing;
- d) a clutch plate affixed to said generator rotor, and a fixed field coil adjacent said clutch plate;
- e) a pinion shaft extending from a second end of said first housing in alignment with said drive shaft, said pinion shaft having a toothed surface inside said first housing and a central bore aligned with said drive shaft, said central bore receiving an end of said drive shaft;
- f) a clutch armature having a central toothed opening slidably engageable to said enlarged toothed surface, and slidable into contact against said clutch plate;
- g) a pump drive housing affixed to said first housing and having a drive gear engageable with said pinion shaft, and having a pump drive shaft connected to said drive gear;
- and
- h) a liquid pump connected to said pump drive shaft.
Dependencies are inferred from the claim text.