Apparatus and method for rotational testing of an object
First Claim
1. An apparatus for testing units that are to be subject to rotation force, said apparatus comprising:
- a rotational drive motor;
a rotating member;
a drive interconnection operatively connected between said drive motor and said rotating member, said drive interconnection including;
a first constant velocity joint;
a longitudinal spline interconnection; and
a second constant velocity joint;
a stationary motor mount fixed to said drive motor;
a test unit holder located on said rotating member for supporting a test unit; and
a three-dimensional motion drive operatively connected to said rotating member.
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Accused Products
Abstract
An apparatus and method for testing units that are subject to rotational force, such as automotive tire-mounted units. The apparatus (30) includes a rotational drive motor (36), a rotating member (32), and a drive interconnection (42, 44, 46, 48, 50, 56) operatively connected between the drive motor and the rotating member. The drive interconnection includes a first constant velocity joint (44), a longitudinal spline interconnection (56), and a second constant velocity joint (46). The apparatus (30) also includes a stationary motor mount (38) fixed to the drive motor (36), a test unit holder (34) located on the rotating member, and a three-dimensional motion drive (40) operatively connected to the rotating member (32).
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Citations
20 Claims
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1. An apparatus for testing units that are to be subject to rotation force, said apparatus comprising:
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a rotational drive motor;
a rotating member;
a drive interconnection operatively connected between said drive motor and said rotating member, said drive interconnection including;
a first constant velocity joint;
a longitudinal spline interconnection; and
a second constant velocity joint;
a stationary motor mount fixed to said drive motor;
a test unit holder located on said rotating member for supporting a test unit; and
a three-dimensional motion drive operatively connected to said rotating member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus for testing automotive tire-mounted units, said apparatus comprising:
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means for rotationally supporting a test unit;
means for rotating said means for rotationally supporting;
means for moving said means for rotationally supporting in three dimensional space; and
means for operatively connecting said means for rotating to said means for rotationally supporting without transferring force from said means for moving to said means for rotating. - View Dependent Claims (12, 13)
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14. A method for testing automotive tire-mounted units, said method comprising the steps of:
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locating a test unit on a member;
holding the test unit on the member;
operatively connecting a drive motor through at least one constant velocity joint and a splined interconnection to the member;
starting the drive motor;
rotating the member with the drive motor; and
,moving the test unit in three dimensional space using a simulating device without affecting the drive motor. - View Dependent Claims (15, 16, 17, 18, 19, 20)
enclosing the test unit in a pressure chamber; and
,subjecting the test unit to pressure changes.
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16. A method as set forth in claim 14, further comprising the step of:
heating the test unit.
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17. A method as set forth in claim 14, further comprising the step of:
cooling the test unit.
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18. A method as set forth in claim 14, further comprising the step of:
enclosing the test unit within a scatter shield.
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19. A method as set forth in claim 14, further comprising the step of:
locating the test unit on the member at a radius smaller than the radius of an automotive tire-mounted location for the unit.
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20. A method as set forth in claim 14, further comprising the step of:
sizing the member such that the member has a kinetic energy significantly less than the kinetic energy of a rotating automotive tire when the rotating member is rotated by the drive motor at a rotational velocity sufficient to accelerate the test unit at a radial acceleration similar to the radial acceleration that the test unit would experience if mounted on the rotating automotive tire.
Specification