Bizarre Patents
Behavior Modification Wristwatch
A wristwatch including a watch band and a watch body having an octagon shaped perimeter and being red in color and having the word STOP thereon to resemble a stop sign.
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| Number | Title | Issue Date |
| 5694890 | Internal combustion engine with sliding valves An internal combustion engine includes slidable valves. Horizontal valve seats of tapered design are associated with inlet and exhaust ports at the top of the engine's combustion chambers. The slidable valves are generally planar and tapered to conform to... | 12/09/1997 |
| 5081963 | Reciprocatory machines A reciprocatory machine having a cylinder defining with at least one piston a working chamber. Each piston is reciprocable in the cylinder by a respective crankshaft. The machine has intake and exhaust ports disposed at opposite ends of the working part o... | 01/21/1992 |
| 5048472 | Two stroke cycle internal combustion engine Two stroke cycle internal combustion engine comprising; a ported cylinder, a cylinder head with an opening, a piston with an opening, a ported sleeve which is axially displaced inside the cylinder, extending through the cylinder head opening and the pisto... | 09/17/1991 |
| 4741296 | Multiple piston expansion chamber engine A method of extracting work from two chambers including a working chamber surrounded by a reciprocating sleeve and an auxiliary chamber surrounding the sleeve.... | 05/03/1988 |
| 4715328 | Multiple piston expansion chamber engine Multiple expansion chambers are configured to partially expand the combusted charge in the combustion chamber and then to complete the expansion process using a supplemental expansion chamber with chamber isolation designs.... | 12/29/1987 |
