Renneke
David R. Renneke, Rock Island, IL US
Patent application number | Description | Published |
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20140069771 | DUO SPIRAL ESCALATOR WITH DIRECT RETURN - This invention describes the design of a carrier system for people or goods permitting the continuous path of travel of a duo spiral escalator ascending and descending around a tower with a fixed diameter from the top to the bottom. At the bottom level and at the top level of the duo spiral escalator the invention consists of discontinuous upper and lower tracks for reversing the tread direction. Escalator chains connected to the tread support rods insure a smooth transfer of the treads between sets of tracks. This invention permits continuous transportation of the riders ascending and descending to a plurality of floors of varying ceiling heights. Current straight and spiral escalators have half of the treads carrying riders while the other half are empty as they travel back underneath. With this invention, as the treads move between floors, all of them may have riders aboard. This design saves horizontal space and requires fewer treads and materials than current escalators. | 03-13-2014 |
Dieter Renneke, Hovelhof DE
Patent application number | Description | Published |
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20150013511 | VERTICAL LATHE - A vertical lathe includes a lower table and a working table, preferably a circular table, mounted on said lower table and rotatable in relation thereto about a vertical axis by means of a travelling-field motor, for receiving a workpiece, especially a workpiece to be machined, wherein the travelling-field motor is in operative connection with a heat-removing heat exchanger. | 01-15-2015 |
Roman Renneke, Paducah, KY US
Patent application number | Description | Published |
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20090093653 | CATALYST - Catalyst comprising palladium, gold and alkali metal acetate as catalytically active components on a support, which is modified by means of titanium, iron, lanthanum, cerium, yttrium and/or molybdenum or oxides thereof. | 04-09-2009 |