Machine element or mechanism – Control lever and linkage systems – Multiple controlled elements
Patent
1977-06-21
1979-01-02
Herrmann, Allan D.
Machine element or mechanism
Control lever and linkage systems
Multiple controlled elements
74473R, G05G 510, G05G 914
Patent
active
041321251
ABSTRACT:
A shift mechanism in a motor vehicle gear box is described having on its output gear shaft freely rotatably journalled toothed gears which can be selectively locked to the shaft by means of at least two engaging sleeves axially displaceable on the shaft, said sleeves engaging individual shifting forks displaceable in the axial direction of the gear box. The shift mechanism cooperates with the forks so that, when a gear lever connected to the shift mechanism is shifted, it displaces the engaging sleeves and achieves selective locking of the toothed gears to the shaft. The shift mechanism has a shifting rod running in the axial direction of the gear box, onto which rod the forks are displaceably journalled, a shift plate displaceable parallel to and perpendicular to the shifting rod and a selector plate which is displaceable perpendicular to the shifting rod, either the shift plate or the selector plate being placed on top of the other and both being provided with at least two control openings or cavities which hold a portion of their respective fork and have such a shape that only one of the forks can be moved at a time by the shift plate, while the other forks are locked in a neutral position by the selector plate. The selection of the fork to be displaced is done by moving the shift plate and the selector plate perpendicular to the shifting rod.
REFERENCES:
patent: 1727646 (1929-09-01), Hunt et al.
patent: 2098708 (1937-11-01), Maker et al.
patent: 2240995 (1941-05-01), Maier
AB Volvo
Herrmann Allan D.
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