Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1978-05-08
1980-03-25
Chandler, Lance
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
F16H 128
Patent
active
041944151
ABSTRACT:
A motion transmitting device including four basic elements, namely, eccentric means, meshing means formed from a number of meshing elements which are linked but movable independently with respect to each other, wheel means formed with portions adapted to engage said meshing elements, and movement limiting means, including a datum member, wherein said eccentric means is disposed to cause each of said meshing elements to become engaged with, and subsequently to become dissociated from, said portions, while said meshing elements are individually guided by said movement-limiting means within specific limits of movement relative to said datum member, such that always a plurality of adjacent ones of said meshing elements are simultaneously in driving engagement with, and stationary relative to, a corresponding number of said portions, and that the total movement relative to said datum member of each of said meshing elements, while it is drivingly engaged with one of said portions, follows a substantially ovoidal path.
Any two of the four basic elements can provide the input and the output of the device, and any desired ratio between input and output rotation speeds, in single or multiple-stage arrangements, can be obtained, by suitably choosing the numbers of meshing elements and complementary portions on the wheel means.
REFERENCES:
patent: 3383931 (1968-05-01), Patterson, Jr.
patent: 3472097 (1969-10-01), Huska
patent: 3783712 (1974-01-01), Colinet
patent: 3985047 (1976-10-01), Therkelsen
patent: 3998112 (1976-12-01), Pierrat
patent: 4023440 (1977-05-01), Kennington et al.
Dimitracopoulos Panayotis C.
Kennington Frank W.
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