Automatic nut running to torque without the possibility of slip
A shock absorber has a pressure tube, a piston slidably disposed in the pressure tube and a piston rod attached to the piston and extending out of the pressure tube. The end of the piston rod extending out of the pressure tube defines a contoured surface which can be engaged to prohibit rotation of the piston rod. In one embodiment the contoured surface is defined by an inner surface of a bore. In another embodiment, the contoured surface is defined by an exterior surface of an extension to the piston rod.
1 . A strut assembly comprising:
a telescoping device having a telescoping rod;
a first seat mounted to said telescoping device;
a second seat mounted to said telescoping device;
a spring mounted between said first seat and said second seat; wherein
an end of said telescoping rod defines a contoured surface such that engagement of said contoured surface with a stationary device prohibits rotation of said telescoping rod.
2 . The strut assembly according to claim 1 , wherein said end of said telescoping rod defines a bore extending into said telescoping rod, said contoured surface being defined by an inner surface of said bore.
3 . The strut assembly according to claim 2 , wherein said contoured surface is a hexagon shaped surface.
4 . The strut assembly according to claim 1 , wherein said end of said telescopic rod includes an extension, said contoured surface being defined by an outer surface of said extension.
5 . The strut assembly according to claim 4 , wherein said contoured surface is a hexagon shaped surface.
6 . The strut assembly according to claim 1 , wherein said end of said telescoping rod defines an external thread.
7 . A shock absorber comprising:
a pressure tube;
a piston slidably disposed within said pressure tube;
a piston rod having a first end attached to said piston and a second end extending out one end of said pressure tube; wherein
said second end of said piston rod defines a contoured surface such that engagement of said contoured surface with a stationary device prohibits rotation of said piston rod.
8 . The shock absorber according to claim 7 , wherein said second end of said piston rod defines a bore extending into said piston rod, said contoured surface being defined by an inner surface of said bore.
9 . The shock absorber according to claim 8 , wherein said contoured surface is a hexagon shaped surface.
10 . The shock absorber according to claim 7 , wherein said second end of said piston rod includes an extension, said contoured surface being defined by an outer surface of said extension.
11 . The shock absorber according to claim 10 , wherein said contoured surface is a hexagon shaped surface.
12 . The shock absorber according to claim 7 , wherein said end of said piston rod defines an external thread.
13 . A strut assembly comprising:
a shock absorber tube;
a piston axially movable with respect to said shock absorber tube;
a piston rod having a first end attached to said piston and a second end extending out one end of said shock absorber tube;
a first spring seat attached to said shock absorber tube;
a second spring seat attached to said piston rod;
a spring mounted between said first spring seat and said second spring seat; wherein
said second end of said piston rod defines a contoured surface such that engagement of said contoured surface with a stationary device prohibits rotation of said piston rod.
14 . The strut assembly according to claim 13 , wherein said second end of said piston rod defines a bore extending into said piston rod, said contoured surface being defined by an inner surface of said bore.
15 . The strut assembly according to claim 14 , wherein said contoured surface is a hexagon shaped surface.
16 . The strut assembly according to claim 13 , wherein said second end of said piston rod includes an extension, said contoured surface being defined by an outer surface of said extension.
17 . The strut assembly according to claim 16 , wherein said contoured surface is a hexagon shaped surface.
18 . The strut assembly according to claim 13 , wherein said end of said piston rod defines an external thread.