Electromagnetic brake for a camshaft phase change device
This patent describes a phase change device. It comprises a first shaft; an input member supported for rotation on the first shaft; an output member fixed to the first shaft; advancing means interconnecting the input and output members, the advancing means being operative upon axial movement to effect limited relative rotation between the input and output members; drum means supported for rotation on the first shaft and engaged with the advancing means to effect the axial movement of the advancing means when a retarding force is applied to the drum means; and actuating means operable to apply the retarding force; the improvement wherein the actuating means comprises an electromagnetic brake assembly, the electromagnetic brake assembly comprising an annular housing defining pole pieces of the electromagnet, a magnetic coil received in the housing, a nonmagnetic plate member enclosing the housing, friction material adhered to the plate member, a brake disc surface formed on the drum, and means for mounting the housing on the first shaft in juxtaposition with the brake disc surface in a substantially fixed angular position while permitting limited axial movement relative to the disc surface.
- Assignee:
- Eaton Corp., Cleveland, OH (United States)
- Patent Number(s):
- US 5031585; A
- Application Number:
- PPN: US 7-519969
- OSTI ID:
- 5662244
- Resource Relation:
- Patent File Date: 7 May 1990
- Country of Publication:
- United States
- Language:
- English
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