Celebrity Inventors
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 |
| 7207632 | Shield system for coal mining A mining system for remotely mining ores and minerals which protects against falling rock and allows evacuation of a miner and conveying system in the case of a cave in. A shield is advanced into a mine. Within the shield, the miner and conveying system are also adv... | 04/24/2007 |
| 5039257 | Mine roof supports Mine roof support comprising a base including a pair of skids, a roof engaging canopy, jacks acting between the base and the canopy, an auxiliary jack connected to the base for lifting or lowering at least part of the base when the support advances and a ... | 08/13/1991 |
| 4946316 | Method and device for moving a shield-type support trestle A method and device is provided for the moving of a shield-type support trestle 1 having stamps 4, 5 arranged between a roof pressure cap 3 and a lying skid 2, a pushing ram 6 is in the lying skid 2, and control valves 11, 12, 13, 14 for controlling the d... | 08/07/1990 |
| 4939037 | Composite sign post A composite fiber and resin sign post for displaying highway signs which provides great reduction in vehicle damage in the event a vehicle moving at high speed collides with the sign post. This potential is achieved by the controlling the mode and locatio... | 07/03/1990 |
| 4747730 | Trestle being displaceable on caterpillar The invention refers to a trestle (1) being displaceable on caterpillars (2) and having an approximately rectangular cross section and serving the purpose of supporting the roof in underground cavities, in particular serving the purpose of securing the ex... | 05/31/1988 |
| 4737051 | Mobile mine-roof support A mobile mine-roof support comprises a powered track-laying carriage having a carrier shaft extending longitudinally of the carriage between its tracks, the end portions of the carrier shaft being arranged to support mountings of bracket form for props su... | 04/12/1988 |
| 4432673 | Mine roof support A method of mining a mineral in which a roof is supported by a plurality of mine roof supports of the kind specified, each advanceable by a force applied to a lower part thereof. During advance of the support an upper part thereof can be sufficiently reta... | 02/21/1984 |
| 4358224 | Continuous sliding support gantry for a large passage A gantry support for supporting a roof of a passage includes two parallel supporting units each having a lower frame provided with articulated tracks and an upper frame carried by props and two cross-members. The two cross-members carry an intermediate up... | 11/09/1982 |
| 4348138 | Sliding supporting gallery A gantry support for supporting a roof of a passage is advanceable along a floor of the passage. The support has two parallel supporting elements mutually spaced apart laterally of the support, each element including at least two pairs of frames provided ... | 09/07/1982 |
| 4192632 | Support systems for mineral mining installations A mineral mining installation has a longwall scraper-chain conveyor with a machine, such as a plough, guided for movement back and forth alongside the conveyor to win mineral from a longwall face. A roof support system which may be arranged at the ends of... | 03/11/1980 |
| 4114385 | Roof support A roof support for use in mines is moved by its own drive mechanism while under permanent load. The support comprises two side-by-side lower carriages with articulated tracks, cross members joining those carriages and an arm articulated to the cross membe... | 09/19/1978 |
| 4109473 | Roof supports A roof support capable of being moved by a drive mechanism while under permanent load includes two pairs of carriages, each carriage carrying an articulated track. The carriages of each pair are arranged one above the other and the two pairs of carriages ... | 08/29/1978 |
| 4107931 | Progressive timbering device A progressive timbering device for use in excavation and mines, comprises a ridge plate adapted to be positioned against the roof or face of the excavation, and a sill disposed beneath the ridge plate adapted to be positioned along the floor. A fluid-pres... | 08/22/1978 |
| 3952525 | Mine roof support A mine roof support arranged for propulsion over a mine floor by means of an advancing jack wherein the advancing jack is arranged to exert an inclined force on the support of which one component is parallel to the floor for propelling the support along t... | 04/27/1976 |
| 3943723 | Mine roof support equipment Advanceable roof-supports on a longwall face are provided with a shield assembly for preventing flow of broken rock material from the goaf, the shield assembly being made up of a series of shield units each comprising two lengths of round link chain suspe... | 03/16/1976 |
