US 11,898,556 B2
Orbital pump
Peter Anthony McBrien, Burgess Hill (GB)
Assigned to Edwards Limited, Burgess Hill (GB)
Appl. No. 17/428,195
Filed by Edwards Limited, Burgess Hill (GB)
PCT Filed Feb. 18, 2020, PCT No. PCT/GB2020/050379
§ 371(c)(1), (2) Date Aug. 3, 2021,
PCT Pub. No. WO2020/169958, PCT Pub. Date Aug. 27, 2020.
Claims priority of application No. 1902223 (GB), filed on Feb. 18, 2019.
Prior Publication US 2022/0120274 A1, Apr. 21, 2022
Int. Cl. F04C 18/02 (2006.01); F04C 28/28 (2006.01)
CPC F04C 18/0215 (2013.01) [F04C 28/28 (2013.01); F04C 2270/70 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A safety device for an orbital pump having first and second interleaved parts which are operable to follow an orbital path with respect to each other, the safety device comprising:
a first member configured to be fixed with respect to the first interleaved part; and
a second member configured to be fixed with respect to the second interleaved part, the second member defining an aperture into which the first member is configured to be received, the aperture being dimensioned to prevent movement of the first interleaved part with respect to the second interleaved part beyond the orbital path,
wherein the aperture is dimensioned to accommodate movement of the first member without contact when following the orbital path, and
wherein contact between the first member and the second member facilitates transmission of a signal to prevent operation of the orbital pump.