Blocking mechanism

Details Blocking mechanism Blocking mechanism

G - Physics

05

G

142/4

G05G 5/08 (2006.01) B62D 11/18 (2006.01) E02F 9/20 (2006.01)

Patent

CA 1140427

Blocking Mechanism Abstract A toggle linkage is provided to interact between a pair of levers located between a pair of input functions, i.e. a pair of depressible foot treadles, and a pair of output functions, i.e. control linkages for operating a variable displacement hydrau- lic machine. Each lever of the pair of levers is fixed either to a sleeve or to a shaft. The toggle linkage includes a bellcrank pivoted about an axis parallel to the axis of the sleeve and shaft and has a pair of abutments or stops thereon, each one of which is aligned either with a first one of said levers or with a second one of said levers. A link connects a portion of said bellcrank with said second one of said levers limiting the extent of movement of said one of said levers in response to movement of said other of said levers.

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