Multi-way valve
AssigneeNumatics, Incorporated
InventorsKlaus-Jürgen Overhoff, Harald Urbanski
Life of this patent
Estimating the term…
Abstract
A multi-way valve has a housing with a stepped bore forming two piston guiding regions and a shoulder ring with two sealing shoulders. The housing also has a first, second and central transverse bores which are spaced along the cylindrical bore. A contact piston has a piston rod and sealing members secured thereon. The guide members are pressed fit onto opposite ends of the piston rod.
Claims19
A multi-way valve comprising:
- a housing being a stepped bore with a reduced diameter central shoulder ring area and two end piston guiding regions;
- axially spaced transverse bores in said housing intersecting said stepped bore at both end piston guiding sections and reduced diameter central shoulder ring area;
- a piston having a piston rod and two opposing guide members at opposite ends of the piston rod for guiding the piston in the bore;
- said two opposing piston guide members being press fitted onto the opposite ends of the piston rod from the respective opposite ends and having sealing members for sealing against the reduced diameter central shoulder ring area;
- and
- said piston having a central solid collar which is slideably and sealingly arranged with respect to the reduced diameter central shoulder ring area.
A multi-way valve having a housing with a stepped bore which forms two piston guiding regions and a shoulder ring with two sealing shoulders;
- a first, second and central transverse bores which are spaced along with a cylindrical bore and which end in the cylindrical bore;
- a control piston which comprises a piston rod and sealing members secured thereon;
- wherein the piston rod has supporting shoulders for axially supporting the sealing members;
- wherein, depending on the position, one sealing member rests against one of the sealing shoulders for the purpose of sealing off a first transverse bore from a central transverse bore and wherein the other sealing member is disengaged from the associated sealing shoulder for the purpose of providing fluid communication between the central transverse bore and a second transverse bore said multi-way valve comprising:
- guiding members for guiding the control piston in the bore being press fitted onto opposite ends of the piston rod from the respective opposite ends;
- the sealing members being press fitted on the piston rod and being directly axially supported on the supporting shoulders of the piston rod;
- and
- wherein each guiding member being axially supported via one of said sealing members on one of said supporting shoulders of the piston rod.
A multi-way valve having a housing with a stepped bore which forms two piston guiding regions and a shoulder ring with two sealing shoulders;
- a first, second and central transverse bores which are spaced along with a cylindrical bore and which end in the cylindrical bore;
- a control piston which comprises a piston rod and sealing members secured thereon;
- wherein the piston rod has supporting shoulders for axially supporting the sealing members;
- wherein, depending on the position, one sealing member rests against one of the sealing shoulders for the purpose of sealing off a first transverse bore from a central transverse bore and wherein the other sealing member is disengaged from the associated sealing shoulder for the purpose of providing fluid communication between the central transverse bore and a second transverse bore said multi-way valve comprising:
- guiding members for guiding the control piston in the bore being press fitted onto opposite ends of the piston rod from the respective opposite ends;
- and
- the sealing members being press fitted on the piston rod and being directly axially supported on the supporting shoulders of the piston rod.
Dependencies are inferred from the claim text.