| US 7,473,049 B2 | ||
| Ceramic-to-metal shaft assembly | ||
| John E. Holowczak, South Windsor, Conn. (US); Constance Bird, Rocky Hill, Conn. (US); Gary E. Sanders, Windsor, Conn. (US); Anthony F. Giamei, Higganum, Conn. (US); Robert Telakowski, Windsor Locks, Conn. (US); and Edward Allen Rothman, South Glastonbury, Conn. (US) | ||
| Assigned to Hamilton Sundstrand, Windsor Locks, CT (US) | ||
| Filed on Jan. 30, 2006, as Appl. No. 11/343,071. | ||
| Prior Publication US 2007/0177937 A1, Aug. 02, 2007 | ||
| Int. Cl. B25G 3/34 (2006.01) | ||
| U.S. Cl. 403—272 [403/334; 403/404] | 21 Claims |
| 1. A shaft assembly, comprising:
a ceramic shaft comprising a ceramic material;
a metallic shaft, one of the ceramic shaft or the metallic shaft having a generally conical portion near one end and the other
of the shafts having a generally conical recess that at least partially receives the generally conical portion, the generally
conical recess having a first portion that is received directly against a corresponding section of the generally conical portion,
the generally conical recess having a second portion that is spaced in a radial direction a selected distance from a corresponding
section of the generally conical portion, the second portion having a length extending in an axial direction that is more
than twice as long as the selected distance; and
a braze alloy in the second portion, the braze alloy directly contacting only the ceramic material of the ceramic shaft and
the metal shaft for securing the ceramic shaft to the metallic shaft.
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