Apparatus for testing watertightness of a railcar
First Claim
1. A passenger railcar in combination with apparatus for testing watertightness of said passenger railcar, said apparatus comprising:
- a fan blower having an electric motor and a blower, with an exhaust duct and an exhaust outlet;
means for locating said exhaust outlet adjacent an aperture in said passenger railcar;
means for sealing said exhaust outlet adjacent said aperture in said passenger railcar;
said fan blower being capable of providing an airflow to said passenger railcar to provide a pressure differential of between about 0.5 to about 2.5 inches of H2 O between an interior of said passenger railcar and an exterior of said passenger railcar;
whereby a liquid solution having the ability to form bubbles may be applied to an exterior surface of said railcar and forms detectable bubbles by escape of air from said railcar at leakage points in said passenger railcar.
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Abstract
An apparatus for testing watertightness of a railcar comprises a blower fan apparatus with an exhaust duct and an exhaust outlet that can be sealed against an aperture in the railcar. The fan blower of the apparatus is capable of providing an airflow to the railcar to provide a pressure differential of between about 0.5 to about 2.5 inches of H2 O between an interior of the railcar and an exterior of the railcar. The blower is operated to provide air to the railcar to provide a pressure differential, causing bubbles to form in a liquid solution applied to the exterior surface of the railcar. The railcar is marked for subsequent repair at locations where bubbles are detected.
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Citations
22 Claims
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1. A passenger railcar in combination with apparatus for testing watertightness of said passenger railcar, said apparatus comprising:
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a fan blower having an electric motor and a blower, with an exhaust duct and an exhaust outlet; means for locating said exhaust outlet adjacent an aperture in said passenger railcar; means for sealing said exhaust outlet adjacent said aperture in said passenger railcar; said fan blower being capable of providing an airflow to said passenger railcar to provide a pressure differential of between about 0.5 to about 2.5 inches of H2 O between an interior of said passenger railcar and an exterior of said passenger railcar; whereby a liquid solution having the ability to form bubbles may be applied to an exterior surface of said railcar and forms detectable bubbles by escape of air from said railcar at leakage points in said passenger railcar. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. Apparatus for testing watertightness of a passenger railcar, comprising:
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a fan blower having an electric motor and a blower, with an exhaust duct and an exhaust outlet; means for locating said exhaust outlet adjacent an aperture in said railcar; means for sealing said exhaust outlet adjacent said aperture in said railcar; said fan blower being capable of providing an airflow of at least 5300 cfm to said passenger railcar to provide a pressure differential of between about 1.0 to about 2.5 inches of H2 O between an interior of said railcar and an exterior of said railcar although said passenger railcar may not be airtight even without any leaks, whereby a liquid solution having the ability to form bubbles may be applied to an exterior surface of said railcar and forms detectable bubbles by escape of air from said railcar at leakage points in said railcar. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A passenger railcar in combination with apparatus for testing watertightness of said passenger railcar, said apparatus comprising:
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a fan blower having an electric motor and a blower, with an exhaust duct and an exhaust outlet; means for locating said exhaust outlet adjacent an aperture in said passenger railcar; means for sealing said exhaust outlet adjacent said aperture in said passenger railcar; said fan blower being capable of providing an airflow of at least 5300 cfm to said passenger railcar to provide a pressure differential of between about 1.0 to about 2.5 inches of H2 O between an interior of said passenger railcar and an exterior of said passenger railcar although said passenger railcar may not be airtight even without any leaks; whereby a liquid solution having the ability to form bubbles may be applied to an exterior surface of said railcar and forms detectable bubbles by escape of air from said railcar at leakage points in said passenger railcar. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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Specification