F - Mech Eng,Light,Heat,Weapons – 15 – B
Patent
F - Mech Eng,Light,Heat,Weapons
15
B
F15B 15/16 (2006.01) A01D 78/14 (2006.01)
Patent
CA 2398738
An extendable arm has a first arm portion and a second arm portion slideably mounted in the first arm portion for extension and retraction relative thereto to extend and contract the arm. A fluid pressure operated extandable and contractible piston and cylinder device is connected to the first arm portion and to the second arm portion whereby extension of the piston and cylinder device extends the second arm portion relative to the first arm portion and vice versa. A third arm portion is extendable and contractible relative to the second arm portion, and a flexible elongated pulling element has opposite ends connected to the first arm portion and passes around at least one guide on the second arm portion. The flexible pulling element is also secured to the third arm portion, whereby extension and contraction of piston and cylinder device causes extending and retracting movement of the second arm portion relative to the first arm portion and such movement also causes similar movement of the third arm portion relative to the second arm portion.
Gowling Lafleur Henderson Llp
Pavone Ostelio
LandOfFree
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