Glam girl Heddy Lamar may have used her good looks to good effect on the silver screen, but she put her smarts to better use as an inventor. During World War II, she co-patented a frequency-switching system for torpedo guidance that was considered years ahead of its time.
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| Number | Title | Issue Date |
| 6619938 | Flexible vane pump A pump has a rotor with two or more flexible vanes forming one or more compartments between adjacent vanes. The rotor is mounted offset relative to a rotor sleeve such that the volume of the compartments varies as the rotor rotates in the sleeve. Incoming... | 09/16/2003 |
| 6394778 | Vane restraint mechanism for axial-vane rotary device An axial-vane rotary device with a rotor assembly having a rotor core and a plurality of removable end blocks attached to the core, end blocks having recesses to encapsulate a vane restraint mechanism, and a removable end wall on one or more of the end bl... | 05/28/2002 |
| 4958992 | Variable capacity swivelling vane pump Variable capacity swivelling vane pump, comprising a radially displaceable rotor (13) connecting eccentrically in a rotor cage (h) with guided vanes (15), which are rotatably supported in vane recesses (16) and on cage pins (14). The vanes (15) thus conve... | 09/25/1990 |
| 4728270 | Apparatus and method for replacing apex seals in a rotary device A rotary device and method for replacing apex seals is provided. The rotary device comprises a housing having a peripheral wall surface and two inner side walls that define a chamber. A rotor is located within the chamber and rotates therein. The peripher... | 03/01/1988 |
| 4083664 | Rotary hydraulic device with retaining means for pumping element biasing springs An improved hydraulic device includes a rotor which is circumscribed by a cam surface. A series of peripheral slots are formed in the rotor. Each of the slots receives a pumping element which is spring urged toward engagement with the cam surface as the r... | 04/11/1978 |