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US 4,519,817 AGranted
Precipitator rapper
AssigneeBelco Pollution Control Corporation
InventorRobert E. Gibbons
Life of this patent
Estimating the term…
Abstract
A rapper for striking a target in a precipitator includes a hammer having a hub pivotally attached to a frame. The rapper also has a drive sprocket rotatably mounted in the frame. The sprocket has a driving plurality of spaced teeth distributed on the sprocket along a given peripheral sector. The latter cover less than the entire periphery of the sprocket. The teeth of the sprocket are distributed to mesh with and then release spokes on the hub of the hammer.
Claims9
A rapper for striking a target in a precipitator, comprising:
- a frame;
- a hammer having a hub pivotally attached to said frame;
- and
- a drive sprocket means rotatably mounted in said frame and having a driving plurality of spaced teeth, said driving plurality of teeth comprising a plurality of peripherally spaced rods, each having clearance along at least a portion of its radially inward side, said driving plurality of teeth being distributed on said sprocket means along a given peripheral sector, the given peripheral sector being less than the entire periphery of said sprocket means;
- a driven plurality of spaced teeth mounted on and radially extending from said hub, said driven plurality of spaced teeth being distributed along a fraction of the circumference of said hub and being sized to be engaged by said drive sprocket means and mesh with the driving plurality of teeth on said sprocket means, said rods of said sprocket means being arranged to mesh with said driven plurality of teeth transversely, all of said teeth of said sprocket means being distributed to mesh with an equivalent number of the teeth of said hub and then release said hub, more than one of said teeth of said sprocket means meshing with said hub for each release of said hammer.
2 more elements
A rapper for striking a target in a precipitator, comprising:
- a frame;
- a hammer having a hub pivotally attached to said frame;
- and
- a drive sprocket means rotatably mounted in said frame and having a driving plurality of spaced teeth, said driving plurality of spaced teeth comprising a pair of circumferential ridges atop said sprocket means and a plurality of peripherally spaced, axially disposed rods mounted across said ridges, said driving plurality of spaced teeth being distributed on said sprocket means along a given peripheral sector, the given peripheral sector being less than the entire periphery of said sprocket means, all of said teeth of said sprocket means being distributed to mesh with an equivalent number of teeth on said hub and then release said hub, more than one of said teeth of said sprocket means meshing with said teeth on said hub for each release of said hammer.
1 more element
Dependencies are inferred from the claim text.