Gearshifting or sliding sleeve for automobile transmissions and

Details Gearshifting or sliding sleeve for automobile transmissions and Gearshifting or sliding sleeve for automobile transmissions and

1990-03-06

1992-03-17

Echols, P. W.

192 clutches and power-stop control

Elements

Locks

192 53F, 298933, 29463, 29469, F16D 1360

Patent

active

050960377

ABSTRACT:
A process is provided for the manufacture of a gearshifting or sliding sleeve for the forced synchronization of manually shifted automotive transmissions in which the sleeve is manufactured in the form of two substantially symmetrical partial units and is then processed further into a complete sleeve by means of customary joining methods. This process permits sleeves to be manufactured by means of comparatively low-cost powder metallurgical methods through pressing and sintering, and thus makes it possible to dispense with very cost-intensive machining methods.

REFERENCES:
patent: 1647136 (1927-11-01), Johnson
patent: 2908366 (1959-10-01), Altmann
patent: 4019586 (1977-04-01), Hauser
patent: 4181210 (1980-01-01), Bibbens
E. Brugel, "Synchronization, an Important Design Element of our Shifting Transmission", ZF Ring, issue 1 (1988).

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