...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 7785087 | Vane cell pump having pistons guided in cylinder for adjustment of the stator The present disclosure relates to a vane cell pump (12) which includes an internal rotor (16) and a plurality of vanes (20) which are displacably mounted in a radial manner in the internal rotor, essentially, in radial slots (18) and are ... | 08/31/2010 |
| 7153110 | Variable volume flow internal gear pump Rotational pump with variable volume flow, comprising a pump housing having a suction connection and a pressure connection, an outer rotor with inner toothing which is rotatably disposed inside the housing, and an inner rotor with outer toothing which is eccentrical... | 12/26/2006 |
| 7028659 | Method for adjusting a volumetric flow-variable positive displacement pump in an internal combustion engine The invention relates to a method for adjusting a volumetric flow-variable positive displacement pump in an internal combustion engine involving the following method steps: operating the positive displacement pump; delivering the fluid to the consumption points in t... | 04/18/2006 |
| 6722856 | Vane-cell pump The invention relates to a vane-cell pump comprising a pump rotor (20), provided with a radially displaceable rotor blade (22). Said pump rotor is mounted in a pump stator (12) which can be pivoted inside a pump bearing house (10) around ... | 04/20/2004 |
| 6604924 | Positive-displacement pump A positive-displacement pump including a rotating vane disposed within a pump housing. The rotating vane is driven by a rotating drive shaft and the rotating vane is radially displaceable relative to the drive shaft wherein the ends of the rotating vane c... | 08/12/2003 |
| 6345600 | Arrangement of oil and vacuum pumps for a drive-motor assembly, particularly with an internal combustion engine An arrangement of oil and vacuum pumps on a driving motor, particularly an internal combustion engine, with which technical and installation expenditures are greatly reduced, involves combining the oil pump and vacuum pump as a modular unit, with pump rot... | 02/12/2002 |