Ball-joint shifter with offset trunnions

Details Ball-joint shifter with offset trunnions Ball-joint shifter with offset trunnions

1997-07-22

1999-06-01

Marmor, Charles A.

Machine element or mechanism

Control lever and linkage systems

Multiple controlled elements

74471XY, 403115, B60K 2004

Patent

active

059079754

ABSTRACT:
A shifter for a manual transmission has a lever arm extending upward from the transmission housing. The lever arm has a ball pivotable in a socket for gear selection, so that the gear shift handle can revolve about the pivot. The lever arm includes trunnions sliding in slots to prevent the lever arm from twisting. The invention offsets the axis of the trunnions from the geometric center of the ball; this offset prevents binding and allows smooth shifting. The invention may include springs for pressing the ball into the socket, adjustable stop members for limiting the throw of the lever arm, and a mounting plate and cover for holding the ball-and-socket joint together.

REFERENCES:
patent: 1330912 (1920-02-01), Short
patent: 1446068 (1923-02-01), Rhoads
patent: 3251237 (1966-05-01), Warmkessel
patent: 3988558 (1976-10-01), Josemans et al.
patent: 4324501 (1982-04-01), Herbenar
patent: 4333360 (1982-06-01), Simmons
patent: 4569245 (1986-02-01), Feldt et al.
patent: 4569545 (1986-02-01), Feldt et al.
patent: 4669329 (1987-06-01), Suzuki
patent: 4787257 (1988-11-01), Ott et al.
patent: 4916966 (1990-04-01), Weishaupt et al.
patent: 5313853 (1994-05-01), Olmsted et al.

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