Bizarre Patents
Pet Toilet-Like Water Disk and Food Storage
One pet-friendly inventor patented "a device for watering pets, e.g., a dog or cat." The device, he helpfully noted, "has the general shape of a toilet."
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| Number | Title | Issue Date |
| 7290964 | Drilling/tapping/unscrewing apparatus A drilling/tapping/unscrewing apparatus including a transmission shaft of a power source on which a drilling ratio gear, a tapping ratio gear and an unscrewing ratio gear are mounted for transmitting the power of the power source to a bit. The apparatus further incl... | 11/06/2007 |
| 7048479 | Machine tool apparatus A machining tool has a tool holder aligned on an axis of rotation β of its shaft, which axis β is oblique to the axis of rotation of a spindle at a predetermined angle θ. Accordingly, the machining tool may perform oblique machining of a workpiece. A power transm... | 05/23/2006 |
| 5203651 | Tapping attachments A tapping attachment for driving a tapping spindle constructed to be adapted for both direct drive and reverse drive of the spindle. The drive of the spindle is by way of a resiliently mounted dog ring having rigid radially extending drive dogs, extending... | 04/20/1993 |
| 5096343 | Internal thread forming apparatus with an automatic rotational direction change controller An internal thread forming apparatus includes a housing body fixed on a machine tool, a driving spindle connected to the rotatable main shaft of the machine tool and rotatable at the same speed as that of the main shaft, a movable body movable vertically ... | 03/17/1992 |
| 4406566 | Line boring machine Dismountable machining apparatus for use at different work site locations, and having base means releasably attachable to a workpiece, and having a collar including an opening having a predetermined central axis and having attachment means, drive housing ... | 09/27/1983 |
| 4288183 | Tool holder or spindle This disclosure relates to a tool holder including a driving cylinder, a driven cylinder reciprocatable and rotatable within the driving cylinder and attachable with a tool, first threaded means reciprocatable and rotatable together with the driven cylind... | 09/08/1981 |
| 4123192 | Tapping attachment for a machine tool A tapping attachment for a machine having at least one rotating workpiece spindle and associated coaxial tool drive shaft. The tapping attachment couples a tapping tool to the drive shaft in a manner selectively controlling the tool to rotate with respect... | 10/31/1978 |
| 4111590 | Positive feed drill A positive feed drill having an elongated spindle mounted for reversible longitudinal motion in a drill housing. The spindle has an hexagonal cross-section with the apices of the hexagon being threaded. A toothed drive gear having a hexagonal aperture cen... | 09/05/1978 |
| 3955629 | Mechanical quill feed unit This application discloses an improved quill feed unit of the type used in automatic or semi-automatic machines for holding and advancing the tool during the machining operation, wherein the rapid advance, feed, and rapid retract movements present in each... | 05/11/1976 |
