Fluid handling – Line condition change responsive valves – Direct response valves
Patent
1979-08-16
1981-03-24
Nilson, Robert G.
Fluid handling
Line condition change responsive valves
Direct response valves
137527, F16K 1503
Patent
active
042574510
ABSTRACT:
A check valve of the type in which a pair of valve members are hingedly mounted to a transverse pin for pivoting movement between respective open positions and complementary closed positions in which the valve members together engage a valve seat. Torsional spring means are provided to bias the valve members to their closed positions. This means comprises a single length of wire formed into three windings which extend transversely within said passageway, two of which windings separately apply a biasing force to the respective valve members while the third, being between the other two, is wound on an axis offset from the axes of the other two, the arrangement being such as to substantially prevent dissipation of stored compressive energy from either of the respective co-axial windings to the other. Also disclosed is a bearing arrangement for valve pins which are of a material harder than the valve body. According to this arrangement, the pins are supported in plates of a material of hardness similar to the material of the pins set into the internal wall of the valve body.
REFERENCES:
patent: 2596787 (1952-05-01), Ottinger
patent: 3678958 (1972-07-01), Satterwhite
patent: 4005732 (1977-02-01), Buckner
Nilson Robert G.
Twinfold Nominees Pty. Limited
LandOfFree
Check valve does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Check valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Check valve will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2405380