Hold Open Rod
A hold open rod is provided that includes an outer tube, an inner tube, an inner rod, and a friction pad. The inner tube is slidingly disposed within the outer tube and includes a head with an inner bearing surface. The inner rod is slidingly disposed within the inner tube, is secured to one end of the outer tube, and has at least one tapered end portion. The friction pad is captured between the head inner bearing surface and the inner rod.
1 . A hold open rod, comprising:
an outer tube;
an inner tube, slidingly disposed within the outer tube, including a head having an inner bearing surface;
an inner rod, slidingly disposed within the inner tube and secured to one end of the outer tube, having at least one tapered end portion; and
a friction pad captured between the inner bearing surface and the inner rod.
2 . The hold open rod according to claim 1 , wherein the friction pad generates a variable resistance over at least the tapered end portion of the inner rod.
3 . The hold open rod according to claim 1 , wherein the inner rod has two tapered end portions.
4 . The hold open rod according to claim 3 , wherein the friction pad generates a variable resistance over each tapered end portion.
5 . The hold open rod according to claim 1 , wherein the inner bearing surface is frusta-conical.
6 . The hold open rod according to claim 5 , wherein the friction pad generates a variable resistance over the inner rod.
7 . The hold open rod according to claim 1 , wherein the tapered end portion is frusta-conical.
8 . The hold open rod according to claim 1 , wherein the head includes a friction pad seat land and a retaining ring, and the friction pad is longitudinally displaceable between the friction pad seat land and the retaining ring.
9 . The hold open rod according to claim 1 , wherein the head is removably attached to the inner tube.
10 . The hold open rod according to claim 1 , wherein the friction pad is an elastomeric material.
11 . The hold open rod according to claim 1 , wherein the outer tube includes a release assembly operable between a locked position and an unlocked position.
12 . The hold open rod according to claim 11 , wherein:
the inner tube includes a dog groove; and
the release assembly includes a release collar with a release groove, and a lock body with a locking dog to engage the dog groove in the locked position and to engage the release groove in the unlocked position.
13 . The hold open rod according to claim 1 , wherein the outer rod is attached to an aircraft engine nacelle, and the inner tube is attached to a hinged cowling.
14 . A hold open rod, comprising:
an outer tube;
an inner tube, slidingly disposed within the outer tube, including a head having an inner bearing surface;
an inner rod slidingly disposed within the inner tube and secured to one end of the outer tube; and
a means for generating friction captively disposed between the inner bearing surface and the inner rod.
15 . The hold open rod according to claim 14 , wherein the means for generating friction is longitudinally displaceable within the head.
16 . The hold open rod according to claim 15 , wherein the inner rod includes at least one tapered end portion, and the means for generating friction generates a variable resistance over the tapered end portion.
17 . The hold open rod according to claim 16 , wherein the inner bearing surface is frusta-conical, and the means for generating friction generates a variable resistance over the inner rod.
18 . The hold open rod according to claim 14 , wherein the outer tube includes a means for locking the hold open rod in a locked position.
19 . The hold open rod according to claim 18 , wherein the inner tube includes a dog groove, and the means for locking includes a means for engaging the dog groove in the locked position.
20 . The hold open rod according to claim 19 , wherein the means for engaging the dog groove disengages the dog groove in the unlocked position.