Spraying apparatus for applying friction modifying material to railroad rail
US12060089B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2020 |
| Grant date | Aug 13, 2024 |
| Priority date | — |
| Expiry date | Apr 6, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B1/32
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A spraying apparatus for applying a friction modifying fluid to a railroad rail, comprising: a nozzle body disposed in a housing; a fluid inlet conduit in fluid communication with an opening in housing; a fluid inlet disposed in the housing in fluid communication with a first fluid conduit defined by or disposed in the nozzle body; wherein the first fluid conduit runs from fluid inlet to a hollow nozzle tip body disposed on and protruding through a bottom of housing and wherein fluid inlet is also disposed below, and in fluid communication with, the fluid inlet conduit; a control fluid supply line and an atomizing fluid supply line each partially disposed in the housing and each having respective portions external of the housing for connecting with the same fluid supply or respective fluid supplies; wherein the control fluid supply line injects a pressurized control fluid against a piston assembly disposed in a piston cavity; wherein the piston assembly carries stopper needle which is biased towards hollow nozzle tip body by a spring so that the needle closes a nozzle tip opening of hollow nozzle tip body; wherein the atomizing fluid supply line provides a pressurized atomizing flu…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.