US 12,146,583 B2
Latching valve
Jianlin Zhang, Windsor (CA); Milosz Niec, Tecumseh (CA); and Renato Colja, Windsor (CA)
Assigned to Leggett & Platt Canada Co., Halifax (CA)
Appl. No. 17/633,901
Filed by LEGGETT & PLATT CANADA CO., Halifax (CA)
PCT Filed Aug. 7, 2020, PCT No. PCT/CA2020/000098
§ 371(c)(1), (2) Date Feb. 8, 2022,
PCT Pub. No. WO2021/026630, PCT Pub. Date Feb. 18, 2021.
Claims priority of provisional application 62/884,885, filed on Aug. 9, 2019.
Prior Publication US 2022/0290774 A1, Sep. 15, 2022
Int. Cl. F16K 31/08 (2006.01); B60N 2/66 (2006.01); F16K 11/044 (2006.01)
CPC F16K 31/084 (2013.01) [B60N 2/665 (2015.04); F16K 11/044 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A pneumatic valve comprising:
a housing;
a first port, a second port, and a third port, each in communication with an interior of the housing;
a coil assembly coupled to the housing;
a plunger axially movable within the housing between a first position and a second position in response to electrical current being driven through the coil assembly, wherein the plunger extends longitudinally along a first direction, wherein one of the first port, the second port, or the third port extends along a second direction coaxial with the first direction, and wherein another of the first port, the second port, or the third port extends along a third direction transverse to the first direction;
a permanent magnet configured to retain the plunger in at least one of the first position or the second position; and
a single valve sealing element attached to the plunger so as to move with the plunger, wherein the single valve sealing element is configured to (i) open fluid communication between the first port and the second port and close fluid communication between the second port and the third port in the first position, and open fluid communication between the second port and the third port and close fluid communication between the first port and the second port in the second position.