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<p class="MsoNormal" style="margin: 0in 0in 0pt;"><span style="font-size: small;"><span style="font-family: verdana,geneva;"><span style="font-size: small;">I once had an idea to develop an automatic air coupler that could be added to the knuckle coupler.<span style="mso-spacerun: yes;"> </span>I had a patent search done, and found that the idea has been patented every which way going all the way back to about 1905.<span style="mso-spacerun: yes;"> </span>But, as a practical matter of actually applying it, its time had never arrived.<span style="mso-spacerun: yes;"> </span></span></span></span></p> <p class="MsoNormal" style="margin: 0in 0in 0pt;"><span style="font-size: small;"><span style="font-family: verdana,geneva;"><span style="font-size: small;"> <o:p></o:p></span></span></span></p> <p class="MsoNormal" style="margin: 0in 0in 0pt;"><span style="font-size: small;"><span style="font-family: verdana,geneva;"><span style="font-size: small;">The idea is doable, but the tricky part is maintaining a reliable air seal with all of the opposing actions between couplers.<span style="mso-spacerun: yes;"> </span>I also had a secondary feature in the coupler for a second connecting port and a second trainline.<span style="mso-spacerun: yes;"> </span></span></span></span></p> <p class="MsoNormal" style="margin: 0in 0in 0pt;"><span style="font-size: small;"><span style="font-family: verdana,geneva;"><span style="font-size: small;"> <o:p></o:p></span></span></span></p> <p><span style="font-family: 'Times New Roman'; font-size: 12pt; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;"><span style="font-family: verdana,geneva;"><span style="font-size: small;">That second trainline could be charged to simultaneously bleed all the cars for switching.<span style="mso-spacerun: yes;"> </span>I have never seen anybody propose that specific feature.<span style="mso-spacerun: yes;"> </span>I think the FRA needs to include that in their remote coupling / uncoupling scheme.<span style="mso-spacerun: yes;"> </span>Although, maybe that function is something that could be incorporated into ECP brakes.<span style="mso-spacerun: yes;"> </span>I have a ponderous document on ECP brakes that I will have to review to see if they could automatically bleed the brakes on a train by redirecting the trainline air to bleeder cylinders.<span style="mso-spacerun: yes;"> </span></span></span><span style="mso-spacerun: yes;"><span style="font-family: verdana,geneva;"><span style="font-size: small;"> </span></span> </span><span style="mso-spacerun: yes;"> </span></span></p>
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