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US 10,571,035 B2Granted
Non-return valve
AssigneeIllinois Tool Works Inc.
InventorsMike Maibaum, Johannes Happich
Life of this patent
Estimating the term…
Abstract
The invention relates to a non-return valve with a valve sleeve, comprising a valve seat and a flow opening and a sealing body moveable in the valve sleeve, comprising a bulged sealing face, wherein the bulged sealing face is arranged at a head end of the sealing body and the non-return valve comprises guiding means for the axial guidance of the sealing body in the valve sleeve, so that the sealing face always faces the valve seat, and a locking element is inserted into the valve sleeve through the flow opening and is fixed therein, so that the locking element restricts the movement of the sealing body in the valve sleeve.
Claims25
A non-return valve comprising:
- a valve sleeve;
- a valve seat;
- a flow opening;
- and
- a sealing body moveable in the valve sleeve, the sealing body comprising:
- a dome-shaped portion having an outer surface defining a bulged sealing face, the dome-shaped portion having a maximum cross-sectional diameter at a base region of the dome-shaped portion;
- and
- a truncated conical-shaped portion having a first end and a second end between the dome shaped portion and the first end, the second end having a cross-sectional diameter less than or equal to the maximum cross-sectional diameter of the dome-shaped portion, and the first end having a cross-sectional diameter less than the second end,
- wherein the bulged sealing face is arranged at a head end of the sealing body and the non-return valve further comprises a guiding means for the axial guidance of the sealing body in the valve sleeve, so that the bulged sealing face always faces the valve seat, a locking element inserted into the valve sleeve through the flow opening and is fixed therein, so that the locking element restricts the movement of the sealing body in the valve sleeve, and the locking element is retained in the valve sleeve by means of a snap connection, and
- wherein the locking element includes at least three recesses facing the sealing body, the at least three recesses having respective bottom floors and sides extending from the floors established by structure of the locking element.
7 more elements
A device, comprising:
- a non-return valve including
- a valve sleeve,
- a valve seat,
- a flow opening, and
- a sealing body moveable in the valve sleeve, the sealing body comprising:
- a dome-shaped portion having an outer surface defining a bulged sealing face, the dome-shaped portion having a maximum cross-sectional diameter at a base region of the dome-shaped portion;
- and
- a truncated conical-shaped portion having a first end and a second end between the dome shaped portion and the first end, the second end having a cross-sectional diameter less than or equal to the maximum cross-sectional diameter of the dome-shaped portion, and the first end having a cross-sectional diameter less than the second end,
- wherein
- the bulged sealing face is arranged at a head end of the sealing body,
- the non-return valve comprises guiding means for the axial guidance of the sealing body in the valve sleeve, so that the bulged sealing face always faces the valve seat, and
- the a locking element inserted into the valve sleeve through the flow opening and is fixed therein, so that the locking element restricts the movement of the sealing body in the valve sleeve, wherein the sealing body comprises a plurality of wings arrayed about a longitudinal axis of the sealing body, the wings establishing the guiding means, the wings having a leading edge and a trailing edge, the trailing edge extending away from the first end of the truncated conical shaped portion and away from the longitudinal axis.
9 more elements
A device, comprising:
- a non-return valve including
- a valve sleeve,
- a valve seat,
- a flow opening, and
- a means for sealing, the means for sealing being moveable in the valve sleeve, the means for sealing comprising:
- a dome-shaped portion having an outer surface defining a bulged sealing face, the dome-shaped portion having a maximum cross-sectional diameter at a base region of the dome-shaped portion;
- and
- a truncated conical-shaped portion having a first end and a second end between the dome shaped portion and the first end, the second end having a cross-sectional diameter less than or equal to the maximum cross-sectional diameter of the dome-shaped portion, and the first end having a cross-sectional diameter less than the second end;
- means for axially guiding the means for sealing in the valve sleeve so that at least a portion of the means for sealing always faces the valve seat;
- and
- means for locking inserted into the valve sleeve through the flow opening and fixed therein, so that the means for locking restricts the movement of the means for sealing in the valve sleeve,
- wherein the means for locking is retained in the valve sleeve by a means for retaining, the means for axially guiding guides the means for sealing in the valve seat so that a sealing face of the means for sealing always faces the valve seat and the a non-return valve is a means for preventing return of flow through the valve sleeve, and
- wherein the sealing body comprises a plurality of wings arrayed about a longitudinal axis of the sealing body, the wings establishing the guiding means, the wings having a leading edge and a trailing edge, the trailing edge extending away from the first end of the truncated conical shaped portion and away from the longitudinal axis.
10 more elements
Dependencies are inferred from the claim text.