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		<title>Informationen zu Feuerheerds Rotors (British Empire) Ltd. - Versionsgeschichte</title>
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		<updated>2026-06-20T20:25:23Z</updated>
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		<id>http://wiki.elva-sammlung.ch/index.php?title=Informationen_zu_Feuerheerds_Rotors_(British_Empire)_Ltd.&amp;diff=30520&amp;oldid=prev</id>
		<title>Rb am 1. Februar 2021 um 10:27 Uhr</title>
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				<updated>2021-02-01T10:27:56Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table class='diff diff-contentalign-left'&gt;
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				&lt;td colspan='2' style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Nächstältere Version&lt;/td&gt;
				&lt;td colspan='2' style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Version vom 1. Februar 2021, 10:27 Uhr&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot; &gt;Zeile 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Zeile 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Filter&lt;/del&gt;- &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;und brautechnische Maschinen-Fabrik AG&lt;/del&gt;, &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;vormals B&lt;/del&gt;.&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;H&lt;/del&gt;. &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Hellmann&lt;/del&gt;, &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Prag&amp;lt;br&amp;gt;&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;A gerotor is a positive displacement pump. The name gerotor is derived from &amp;quot;generated rotor&amp;quot;. A gerotor unit consists of an inner and outer rotor. The inner rotor has n teeth, while the outer rotor has n+1 teeth; with n defined as a natural number greater than or equal to 2. The axis of the inner rotor is offset from the axis of the outer rotor and both rotors rotate on their respective axes. The geometry of the two rotors partitions the volume between them into n different dynamically&lt;/ins&gt;-&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;changing volumes. During the assembly's rotation cycle, each of these volumes changes continuously, so any given volume first increases&lt;/ins&gt;, &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;and then decreases&lt;/ins&gt;. &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;An increase creates a vacuum&lt;/ins&gt;. &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;This vacuum creates suction&lt;/ins&gt;, &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;and hence, this part of the cycle is where the inlet is located. As a volume decreases compression occurs. During this compression period, fluids can be pumped, or, if they are gaseous fluids, compressed.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;'''1912'''&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Verkauft &lt;/del&gt;an &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Enzinger&lt;/del&gt;. &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Quelle: www&lt;/del&gt;.&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;khs&lt;/del&gt;.&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;com&amp;lt;br&amp;gt;&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Gerotor pumps are generally designed using a trochoidal inner rotor and &lt;/ins&gt;an &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;outer rotor formed by a circle with intersecting circular arcs&lt;/ins&gt;.&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;[1]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;'''1940 ca&lt;/del&gt;.&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;'''&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Investa AG für Ein&lt;/del&gt;- &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;und Ausfuhr von Erzeugnissen des schweren Maschinbenbaues Praha&lt;/del&gt;, &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Tschechoslowakei&amp;lt;br&amp;gt;&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;A gerotor can also function as a pistonless rotary engine&lt;/ins&gt;. &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;High pressure gas enters the intake and pushes against the inner and outer rotors, causing both to rotate as the volume between the inner and outer rotor increases&lt;/ins&gt;. &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;During the compression period, the exhaust is pumped out&lt;/ins&gt;. &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Fusioniert mit Skoda? Auf dem Prospekt von 1940 ca&lt;/del&gt;. &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;prangt das Skoda&lt;/del&gt;-&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Logo&lt;/del&gt;.&amp;lt;br&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;At the most basic level, a Ge&lt;/ins&gt;-&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;rotor is essentially one that is moved via fluid power. Originally this fluid was water&lt;/ins&gt;, &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;today the wider use is in hydraulic devices. Myron F. Hill, who might be called the father of the Ge-rotor, in his booklet &amp;quot;Kinematics of Ge-rotors,&amp;quot; lists efforts by Galloway in 1787, by Nash and Tilden in 1879, by Cooley in 1900, by Professor Lilly of Dublin University in 1915, and by Feuerheerd in 1918. These men were all working to perfect an internal gear mechanism by a one-tooth difference to provide displacement.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Myron Hill made his first efforts in 1906, then, in 1921, gave his entire time to developing the Ge-rotor&lt;/ins&gt;. &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;He developed a great deal of geometric theory bearing upon these rotors, coined the word GE&lt;/ins&gt;-&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;ROTOR (meaning &amp;quot;Generated Rotor&amp;quot;) and secured basic patents on GE-ROTOR.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Ge-rotors are widely used today throughout industry, and are produced in a variety of shapes and sizes by a number of different methods.[citation needed] &lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Quelle: https://en.wikipedia&lt;/ins&gt;.&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;org/wiki/Gerotor&lt;/ins&gt;&amp;lt;br&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;'''1920 Prospekt'''&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;'''1920 Prospekt'''&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Rb</name></author>	</entry>

	<entry>
		<id>http://wiki.elva-sammlung.ch/index.php?title=Informationen_zu_Feuerheerds_Rotors_(British_Empire)_Ltd.&amp;diff=30519&amp;oldid=prev</id>
		<title>Rb: Die Seite wurde neu angelegt: „Filter- und brautechnische Maschinen-Fabrik AG, vormals B.H. Hellmann, Prag&lt;br&gt; '''1912''' Verkauft an Enzinger. Quelle: www.khs.com&lt;br&gt; '''1940 ca.''' Investa…“</title>
		<link rel="alternate" type="text/html" href="http://wiki.elva-sammlung.ch/index.php?title=Informationen_zu_Feuerheerds_Rotors_(British_Empire)_Ltd.&amp;diff=30519&amp;oldid=prev"/>
				<updated>2021-02-01T10:25:01Z</updated>
		
		<summary type="html">&lt;p&gt;Die Seite wurde neu angelegt: „Filter- und brautechnische Maschinen-Fabrik AG, vormals B.H. Hellmann, Prag&amp;lt;br&amp;gt; &amp;#039;&amp;#039;&amp;#039;1912&amp;#039;&amp;#039;&amp;#039; Verkauft an Enzinger. Quelle: www.khs.com&amp;lt;br&amp;gt; &amp;#039;&amp;#039;&amp;#039;1940 ca.&amp;#039;&amp;#039;&amp;#039; Investa…“&lt;/p&gt;
&lt;p&gt;&lt;b&gt;Neue Seite&lt;/b&gt;&lt;/p&gt;&lt;div&gt;Filter- und brautechnische Maschinen-Fabrik AG, vormals B.H. Hellmann, Prag&amp;lt;br&amp;gt;&lt;br /&gt;
'''1912'''&lt;br /&gt;
Verkauft an Enzinger. Quelle: www.khs.com&amp;lt;br&amp;gt;&lt;br /&gt;
'''1940 ca.'''&lt;br /&gt;
Investa AG für Ein- und Ausfuhr von Erzeugnissen des schweren Maschinbenbaues Praha, Tschechoslowakei&amp;lt;br&amp;gt;&lt;br /&gt;
Fusioniert mit Skoda? Auf dem Prospekt von 1940 ca. prangt das Skoda-Logo.&amp;lt;br&amp;gt;&lt;br /&gt;
&lt;br /&gt;
'''1920 Prospekt'''&lt;br /&gt;
{| class=&amp;quot;galleryTable noFloat&amp;quot;&lt;br /&gt;
|-&lt;br /&gt;
| [[File:1920_Feuerheerd_1.jpg|200px|thumb|left|Seite 1]]&lt;br /&gt;
| [[File:1920_Feuerheerd_2.jpg|200px|thumb|left|Seite 2]]&lt;br /&gt;
| [[File:1920_Feuerheerd_3.jpg|200px|thumb|left|Seite 3]]&lt;br /&gt;
| [[File:1920_Feuerheerd_4.jpg|200px|thumb|left|Seite 4]]&lt;br /&gt;
|}&lt;/div&gt;</summary>
		<author><name>Rb</name></author>	</entry>

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