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US 6,188,156 B1Granted
Cast rabbet joint for proper alignment of assembled components
AssigneeEmerson Electric Co.
InventorRichard J. Maldeney
Life of this patent
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Abstract
A rabbet joint between two components of an assembly eliminates the possibility of the formation of an undesirable radius between angled surfaces of the rabbet by segmenting the surfaces with recesses in an alternating pattern, thus forming the rabbet surfaces without sharp edges while still providing a sharp unobstructed inside-angle between the surfaces of the rabbet.
Claims21
A joint in an assembly comprising:
- a first component having an end surface and a side surface that intersect to form an edge of the first component;
- a second component having a plurality of first surface segments that are separated from each other by a first set of recesses and a plurality of second surface segments that are separated from each other by a second set of recesses, the second surface segments are oriented at an angle relative to the first surface segments and are adjacent the first set of recesses, and the first surface segments engage with the side surface of the first component and the second surface segments engage with the end surface of the first component thereby forming the joint between the first and second components.
A joint for connection to a cylindrical housing having an end surface and a side surface adjacent the end surface, the joint comprising;
- a circular main body having a peripheral rim and a center axis;
- at least two cylindrical surface segments having an equal radius of curvature are formed on the rim, the cylindrical surface segments being separated circumferentially around the center axis by radial recesses therebetween, the cylindrical surface segments also being adapted to engage the side surface of the cylindrical housing when the mainbody is joined to the housing;
- at least two coplanar surfaces are formed on the rim, the coplanar surfaces being separated circumferentially around the center axis by axial recesses therebetween, the coplanar surfaces also being positioned circumferentially between the cylindrical surface segments and being adapted to engage the end surface of the housing when the mainbody is joined to the housing.
An enclosure for a dynamoelectric device comprising:
- a cylindrical housing, the housing having an end surface and a side surface adjacent the end surface;
- and
- an end shield having a main body with a peripheral rim and a center axis, the rim having at least two cylindrical surface segments formed thereon, the cylindrical surface segments having an equal radius of curvature and being separated circumferentially around the center axis by radial recesses therebetween, the cylindrical surface segments also engaging the side surface of the housing when the end shield is joined to the housing, the rim also having at least two coplanar surfaces formed thereon, the coplanar surfaces being separated circumferentially about the center axis by axial recesses therebetween, the coplanar surfaces being positioned circumferentially between the cylindrical surface segments and the coplanar surfaces engaging the end surface of the housing when the end shield is joined to the housing.
A method of forming a rabbet joint for connecting a first component of an assembly to a second component of the assembly, the method comprising;
- forming at least two concentric cylindrical surface segments on the first component with the cylindrical surface segments having a common axis and an equal radius of curvature, separating the cylindrical surface segments circumferentially about the common axis by radial recesses therebetween, and positioning the cylindrical surface segments to engage a cylindrical mating surface of the second component;
- forming at least two coplanar surfaces on the first component with the coplanar surfaces being perpendicular to the common axis and facing in an axial direction, separating the coplanar surfaces circumferentially about the axis by axial recesses therebetween, and positioning the coplanar surfaces circumferentially between the cylindrical surface segments and where they will engage with an annular mating surface of the second component;
- and
- engaging the components by axially moving the first component relative to the second component with the cylindrical surface segments engaging the cylindrical mating surface of the second component until the coplanar surfaces engage the annular surface of the second component.
1 more element
Dependencies are inferred from the claim text.