Bizarre Patents
User-operated amusement apparatus for kicking the user's buttocks
An apparatus including a user-operated and controlled apparatus for self-infliction of repetitive blows to the user's buttocks by a plurality of elongated arms bearing flexible extensions that rotate under the user's control.
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| Number | Title | Issue Date |
| 5038487 | Attachment for framer's square An attachment for a framer's square which permits the framer's square to be self supporting on a flat, horizontal surface. The attachment has an elongated support bar with two clips which may be inserted over a blade of a framer's square. This attachment,... | 08/13/1991 |
| 4899454 | Perspective drawing machine A drafting table includes vertical and horizontal straight edged supports together with drive mechanisms for moving the vertical straight edge such that it will always point to a viewing point and for moving the horizontal straight edges in plural differe... | 02/13/1990 |
| 4449304 | Drawing instrument and locking apparatus therefor A drawing instrument and locking apparatus therefor in which the locking apparatus can be made of polyethylene, polypropylene or the like and is not subject to fragmentation or permanent damage during normal use. A displaceable member of the locking appar... | 05/22/1984 |
| 4438569 | Drafting machine A drafting machine includes a pair of perpendicular straight edges slidably mounted with respect to reference scales integrally mounted within the drafting machine. A fine adjustment mechanism includes a worm and spur gear combination for moving the strai... | 03/27/1984 |
| 4380124 | Drawing board A drawing board suitable for use in preparing perspective drawings is provided with a pair of arcuate guide surfaces facing towards one another and situated towards one side of the drawing board, with a recess or depression between the arcuate guide surfa... | 04/19/1983 |
| 3978587 | Drafting system and apparatus In a drafting system for drawing perspective views and the like, a ruling blade has a reference head extending laterally beyond at least one ruling edge formed with one or more pin-receiving holes arranged in line with the ruling edge adapted to receive a... | 09/07/1976 |
