US 12,134,923 B2
Mechanically damped pull then lift hold open rod mechanism
Ben Dyer, Waco, TX (US); and Neil Christian, Waco, TX (US)
Assigned to MARATHONNORCO AEROSPACE, INC., Waco, TX (US)
Filed by MarathonNorco Aerospace, Inc., Waco, TX (US)
Filed on Jul. 31, 2018, as Appl. No. 16/050,709.
Claims priority of provisional application 62/539,056, filed on Jul. 31, 2017.
Prior Publication US 2019/0032377 A1, Jan. 31, 2019
Int. Cl. E05C 17/30 (2006.01); B64D 29/06 (2006.01); E05B 17/00 (2006.01); F15B 15/26 (2006.01); F16F 9/02 (2006.01); B64C 1/14 (2006.01)
CPC E05C 17/30 (2013.01) [B64D 29/06 (2013.01); E05B 17/0041 (2013.01); F15B 15/261 (2013.01); F16F 9/0254 (2013.01); B64C 1/14 (2013.01); E05Y 2201/218 (2013.01); E05Y 2201/264 (2013.01); E05Y 2900/502 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A hold open rod configured to selectively provide damping during particular operational movements, the hold open rod comprising:
an inner tube coupled to an outer tube, the inner tube movable within the outer tube;
a tube stop comprising an inner lock groove arranged on an outside surface the tube stop and the tube stop is configured to prevent the inner tube from separating from the outer tube;
a damping mechanism configured to damp movement of the outer tube with respect to the inner tube;
the damping mechanism comprises a damping dog and a damping collar;
the damping collar comprises a damping groove that receives the damping dog when the damping mechanism is in a damping configuration;
the damping collar comprises a non-damping groove that receives the damping dog when the damping mechanism is in a non-damping configuration;
the damping collar is configured to move the damping dog from the damping configuration to the non-damping configuration;
a locking mechanism comprising a locking collar and a locking dog;
the locking collar comprising a lock groove and an unlock groove;
the locking mechanism is configured to locate the locking dog to engage the unlock groove when the hold open rod is in an unlocked configuration; and
the locking mechanism is configured to locate the locking dog to engage the lock groove and contact the inner lock groove on the outside surface the tube stop when the hold open rod is in a locked configuration,
wherein the damping mechanism is configured such that in the damping configuration the damping dog is located to apply a pressure to the inner tube and mechanically damp a movement of the inner tube that comprises slowing movement of the inner tube with respect to the outer tube.