US 11,788,588 B2
Anti-back drive components for a valve actuator assembly
Michael Douglas Williams, Kent, WA (US); Mark Scott Soldan, Tacoma, WA (US); Donald Hoban, Edgewood, WA (US); and Matt Todd Buss, Kent, WA (US)
Assigned to TRI-TEC MANUFACTURING, LLC, Kent, WA (US)
Filed by TRI-TEC MANUFACTURING, LLC, Kent, WA (US)
Filed on Aug. 25, 2022, as Appl. No. 17/895,895.
Application 17/895,895 is a continuation of application No. 16/812,122, filed on Mar. 6, 2020, granted, now 11,460,079.
Claims priority of provisional application 62/815,107, filed on Mar. 7, 2019.
Prior Publication US 2022/0403896 A1, Dec. 22, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. F16D 43/208 (2006.01); F16K 31/60 (2006.01); F16D 43/21 (2006.01); F16K 31/05 (2006.01); F16D 41/06 (2006.01)
CPC F16D 43/208 (2013.01) [F16D 43/211 (2013.01); F16K 31/60 (2013.01); F16D 2041/0605 (2013.01); F16D 2041/0606 (2013.01); F16K 31/055 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A device, comprising:
a first anti-back drive device including:
a locking device including a plurality of first channels;
an unlocking device interfacing with the locking device, the unlocking device including a plurality of second channels;
a plurality of rollers received in the plurality of first channels; and
a plurality of springs, each spring of the plurality of springs aligned with respective ones of the plurality of rollers.