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| Number | Title | Issue Date |
| 4870872 | Cam mechanisms A cam mechanism includes a cam shaft, a cam mounted on said cam shaft, the cam being capable of limited relative rotation with respect to the cam shaft and damping means being provided to control the extent of rotation of the cam relative to the cam shaft... | 10/03/1989 |
| 4869215 | Cam mechanisms A cam mechanism includes a cam of basic circular formation and having a lobe formation extending radially outwardly along part of its periphery; and a cam follower mounted for reciprocating movement along an axis perpendicular to the axis of rotation of t... | 09/26/1989 |
| 4840164 | Method and apparatus for supercharging internal combustion engines A method and apparatus of supercharging an internal combustion engine in which a pulsed jet of gas is injected at high velocity into a mixing chamber where momentum exchange between the jet and air or air/fuel mixture in the mixing chamber will accelerate... | 06/20/1989 |
| 4838220 | Rotary valves A rotary valve has a valve rotor with an angular discontinuity, the valve rotor being mounted for rotation relative to a port, so that as it rotates the rotor will open and close the port; a drive train is provided to rotate the rotor, said train being ar... | 06/13/1989 |
| 4828379 | Rear view mirror with perpendicular mirror surfaces An external rear view mirror has a first mirror surface of relatively large surface area, a second mirror surface of relatively small surface area and a mechanism for moving the first mirror surface between a first position in which it provides a rearward... | 05/09/1989 |
| 4794810 | Linear actuator A linear actuator has a screw threaded shaft member and an internally screw threaded member, the threadform of the shaft member corresponding to that of the internally screw threaded member but of smaller diameter, whereby the member may be skewed relativ... | 01/03/1989 |
| 4787115 | Windscreen wipers A windscreen wiper mechanism includes a wiper arm having a second member mounted on the first member so that it is movable axially with respect thereto. The first member is adapted to be mounted so that it may be driven in reciprocating manner about a piv... | 11/29/1988 |
