Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
317 words
An oscillation exciter, which comprises in combination: a housing; two at least axially parallel imbalance-weight carriers rotatably journalled in said housing and rotatably positively coupled with one another, each of said carriers being provided with two imbalance weights, and at least one of said carriers comprising a shaft; a hub on one of said shafts for effecting coupling of said carriers for continuous counter rotation for changing the phase position of said imbalance weights, said hub being rotatably arranged on said shaft yet being fixed axially, said hub being provided, in that wall thereof which surrounds said shaft, with a hub groove which extends along said shaft, said shaft being provided with a shaft slot extending along said shaft at an incline to said hub groove; a pin passing substantially at right angles through, and fixed against rotation with respect to, said shaft, said pin slidably engaging said hub groove and shiftable in said shaft slot; an adjustment member arranged coaxially in said shaft for effecting shifting of said pin, said shaft having an axially parallel cylinder chamber open towards one end face of said shaft, said adjustment member having a piston extension facing the open side of said cylinder chamber and sealed off relative thereto, said adjustment member and said piston extension being slidable in said cylinder chamber; and a pressure-medium chamber fixed to said housing and sealed off relative to as well as surrounding the cylinder chamber end of said shaft, said pressure-medium chamber serving for supplying pressure medium from said open side of said cylinder chamber to said piston extension for moving said piston extension in a first direction, movement of said piston extension in the opposite direction being effected by mechanical back or reaction pressure generated as a result of the angle and direction of inclination of said hub groove relative to said shaft slot and the direction of rotation of said shaft.
Claim 2
Dependent Claim
317 words
An oscillation exciter, which comprises in combination: a housing; two at least axially parallel imbalance-weight carriers rotatably journalled in said housing and rotatably positively coupled with one another, each of said carriers being provided with two imbalance weights, and at least one of said carriers comprising a shaft; a hub on one of said shafts for effecting coupling of said carriers for continuous counter rotation for changing the phase position of said imbalance weights, said hub being rotatably arranged on said shaft yet being fixed axially, said hub being provided, in that wall thereof which surrounds said shaft, with a hub groove which extends along said shaft, said shaft being provided with a shaft slot extending along said shaft at an incline to said hub groove; a pin passing substantially at right angles through, and fixed against rotation with respect to, said shaft, said pin slidably engaging said hub groove and shiftable in said shaft slot; an adjustment member arranged coaxially in said shaft for effecting shifting of said pin, said shaft having an axially parallel cylinder chamber open towards one end face of said shaft, said adjustment member having a piston extension facing the open side of said cylinder chamber and sealed off relative thereto, said adjustment member and said piston extension being slidable in said cylinder chamber; and a pressure-medium chamber fixed to said housing and sealed off relative to as well as surrounding the cylinder chamber end of said shaft, said pressure-medium chamber serving for supplying pressure medium from said open side of said cylinder chamber to said piston extension for moving said piston extension in a first direction, movement of said piston extension in the opposite direction being effected by mechanical back or reaction pressure generated as a result of the angle and direction of inclination of said hub groove relative to said shaft slot and the direction of rotation of said shaft.