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 |
| 5134333 | Vibration wave driven motor This invention relates to a vibration type motor in which frequency signals differing in phase from each other are applied to an electro-mechanical energy conversion element disposed on a vibration member to thereby vibrate the vibration member and drive ... | 07/28/1992 |
| 5107163 | Ultrasonic motor An ultrasonic motor is provided which generates oscillations in only two directions so as to more efficiently provide for the transmission of driving torque from the driving member to the driven rotor member. The motor includes a stator having a driving p... | 04/21/1992 |
| 5055732 | Ultrasonic motor An ultrasonic motor comprises an elastic member inserted between a piezoelectric vibrator and a rotor. The elastic member comprises a base portion and plurality of projecting portions. Each of the projecting portions tapers toward its free end and is pref... | 10/08/1991 |
| 4980599 | Ultrasonic motor An ultrasonic motor is provided with a moving member and a vibrating member which is in contact with the moving member so as to provide the drive input for the moving member. A piezoelectric vibrator is attached to one side of the vibrating member and the... | 12/25/1990 |
| 4978882 | Vibration wave driven motor In a vibration wave driven motor wherein a vibration member and a member brought into pressure contact with the vibration member is frictionally driven relative to each other through a sliding material secured to the sliding surface of one of them, the sl... | 12/18/1990 |
| 4587452 | Vibration wave motor having a vibrator of non-uniform elastic modulus In a vibration wave motor for driving a movable member contacting a vibration member by a travelling vibration wave generated in the vibration member attached to electrostrictive elements, by applying a periodic voltage to the electrostrictive elements. T... | 05/06/1986 |
| 4580073 | Vibration wave motor with plural projection vibrator In a vibration wave motor for driving a movable member contacting a vibration member, a travelling vibration wave is generated in the vibration member by electrostrictive elements, applying a periodic voltage to the elements. The vibration member is divid... | 04/01/1986 |
