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US 4,535,568 AGranted
Belt sander
OwnerCharles H. LaFaveinventor
Life of this patent
Estimating the term…
Abstract
A belt sander having a vertically slotted casing for receiving an idler shaft; a crowned idler pully rotatably mounted on the idler shaft; a crowned, power driven drive pully rotatably mounted on the casing; a guide shaft attached perpendicular to the idler shaft; a first alignment plate attached to the casing interior; a second alignment plate slideably mating the casing interior between the first alignment plate and the idler shaft, said plates being bored to slideably receive the guide shaft; and a spring mounted in compression between the alignment plates.
Claims7
A belt sander comprising:
- a vertical casing having two horizontally opposing vertical slots;
- an idler shaft passing through said slots;
- a first idler pulley mounted external to the casing on one end of the idler shaft for rotation about an axis;
- a first power driven, rotatable drive pulley, externally mounted on the casing, having a fixed, horizontally disposed rotation axis;
- a lower alignment plate mounted in the interior of the casing and having a vertical bore;
- an upper alignment plate slideably mating the interior of the casing and having a vertical bore;
- a guide shaft slideably mating the vertical bores of the upper and lower alignment plates and attached to the idler shaft;
- and
- means for positioning the idler pulley rotational axis with respect to the drive pulley rotational axis to tension a belt trained about the drive and idler pulleys.
6 more elements
A belt sander comprising:
- a vertical casing having two horizontally opposed vertical slots;
- an idler shaft passing through the slots;
- a first and a second idler pulley rotatably mounted on opposite ends of the idler shaft, external to the casing, and having a shared rotational axis;
- a first and a second power driven, rotatable drive pulley, mounted external to the casing, and having a shared, horizontally disposed, rotational axis;
- a lower alignment plate mounted in the interior of the casing and having a vertical bore;
- an upper alignment plate slideably mating the interior of the casing and having a vertical bore;
- a guide shaft, slideably mating the vertical bores of the upper and lower alignment plates, and attached to the idler shaft;
- and
- spring means mounted in compression between the upper and lower alignment plates to tension belts trained about the drive and idler pulleys.
6 more elements
A belt sander comprising:
- a cylindrical shaped casing having two horizontally opposing vertical slots;
- an idler shaft passing through said slots;
- an idler pulley mounted external to the casing on one end of the idler shaft for rotation about an axis;
- a power driven, rotatable drive pulley, externally mounted on the casing, having a fixed, horizontally disposed rotation axis;
- a circular lower alignment plate mounted within the casing and having a central vertical bore;
- a circular upper alignment plate slidably mounted within the casing and having a central vertical bore;
- a guide shaft slidably mating the vertical bores of the upper and lower alignment plates and attached to the idler shaft;
- and
- means for positioning the idler pulley rotational axis with respect to the drive pulley rotational axis to tension a belt trained about the drive and idler pulleys.
6 more elements
Dependencies are inferred from the claim text.