Directional valve
First Claim
1. A directional valve for selectively directing the flow of a liquid from only through a pressure pipeline and from a discharge pipeline into the pressure pipeline extending substantially perpendicularly thereto, which comprises(a) a valve housing connecting the pressure pipeline to the discharge pipeline, the housing including(1) a tubular body mounted in the pressure pipeline and having a central portion comprised of two end walls and two side walls interconnecting the end walls, the central portion being of substantially rectangular cross section and the end walls extending in the general direction of the pressure pipeline, and(2) a cylindrical body extending substantially perpendicularly to one of the end walls and having one end connected to the one end wall and an opposite end for connection to the discharge pipeline, the cylindrical body having a diameter corresponding to the length of the one end wall between the two side walls of the central portion, and(b) a motor-operable valve member axially slidably mounted for movement between the cylindrical body and the central portion, the valve member including(1) a partially cylindrical shell coaxial with the cylindrical body and being delimited substantially by a plane passing through the axis of the cylindrical body and shell perpendicularly to the side walls of the central portion,(2) an end wall at an end of the shell facing the central portion and substantially parallel to the end wall of the central portion opposite the one end wall thereof,(3) a ring having a diameter corresponding to that of the cylindrical body at the other end of the shell, and(4) the length of the shell between the end wall thereof and the ring being substantially equal to the distance between the end walls of the central portion and the shell contacting the side walls in said plane when the valve member is moved into the central portion, the valve member providing for communication between the pressure pipeline and the discharge pipeline in an axial position wherein the ring is substantially flush with the one end wall of the central portion, interrupting the communication between the pressure and discharge pipelines in an axial position wherein the end wall of the shell is substantially flush with the one end wall of the central portion and allowing communication only through the pressure pipeline.
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Accused Products
Abstract
A valve housing has a circular cylindrical tubular member and a tubular body having a central portion which is substantially rectangular in cross-section and has mutually opposite, first and second side walls. The first side wall has in cross-section a length equal to the diameter of said tubular member, which is joined to said first side wall and extends at right angles thereto. A motor-operable valve member is axially slidably mounted in said tubular member and comprises a laterally open shell, which consists of a part of a circular cylinder and is coaxial to said tubular member and substantially defined by that cross-sectional plane of said central portion which includes the axis of said tubular member, a circular ring at the end remote from said second side wall, and an end wall at the end opposite to said circular ring.
13 Citations
6 Claims
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1. A directional valve for selectively directing the flow of a liquid from only through a pressure pipeline and from a discharge pipeline into the pressure pipeline extending substantially perpendicularly thereto, which comprises
(a) a valve housing connecting the pressure pipeline to the discharge pipeline, the housing including (1) a tubular body mounted in the pressure pipeline and having a central portion comprised of two end walls and two side walls interconnecting the end walls, the central portion being of substantially rectangular cross section and the end walls extending in the general direction of the pressure pipeline, and (2) a cylindrical body extending substantially perpendicularly to one of the end walls and having one end connected to the one end wall and an opposite end for connection to the discharge pipeline, the cylindrical body having a diameter corresponding to the length of the one end wall between the two side walls of the central portion, and (b) a motor-operable valve member axially slidably mounted for movement between the cylindrical body and the central portion, the valve member including (1) a partially cylindrical shell coaxial with the cylindrical body and being delimited substantially by a plane passing through the axis of the cylindrical body and shell perpendicularly to the side walls of the central portion, (2) an end wall at an end of the shell facing the central portion and substantially parallel to the end wall of the central portion opposite the one end wall thereof, (3) a ring having a diameter corresponding to that of the cylindrical body at the other end of the shell, and (4) the length of the shell between the end wall thereof and the ring being substantially equal to the distance between the end walls of the central portion and the shell contacting the side walls in said plane when the valve member is moved into the central portion, the valve member providing for communication between the pressure pipeline and the discharge pipeline in an axial position wherein the ring is substantially flush with the one end wall of the central portion, interrupting the communication between the pressure and discharge pipelines in an axial position wherein the end wall of the shell is substantially flush with the one end wall of the central portion and allowing communication only through the pressure pipeline.
Specification