Positioning ring for a hydraulically operated warning device

Details Positioning ring for a hydraulically operated warning device Positioning ring for a hydraulically operated warning device

1989-12-08

1991-02-26

Olszewski, Robert P.

Fluid-pressure and analogous brake systems

Multiple fluid-receiving devices

Multiple motors

303 975, B60T 1300

Patent

active

049956760

ABSTRACT:
The positioning ring (44) for a hydraulically operated warning device (80) may be utilized for any hydraulically movable piston or sleeve (52) which, when properly assembled, causes a warning device (80) to effect an initial mode of response. The positioning ring (44) has a reduced inner diameter portion (41) separated from an enlarged inner diameter portion (43) by way of a radial shoulder (42). The enlarged inner diameter portion (43) abuts a shoulder (17) of a surrounding housing (11) and the radial shoulder (42) abuts a shoulder (59) of the piston or sleeve (52). The housing (11) may contain a warning device (80) which engages the piston or sleeve (52) such that if the piston or sleeve (52) is displaced in an axial direction the warning device (80) is operated. Should the centering ring (44) be mis-assembled or not included in the assembly, either the misassembled positioning ring (44) or the lack of the positioning ring ( 44) permits the piston or sleeve (52) to be moved to a position where the warning device (80) is operated to provide an indication that the positioning ring (44) is either misassembled or missing from the assembly.

REFERENCES:
patent: 3672728 (1972-06-01), Keady et al.
patent: 4208074 (1980-06-01), Ishigami
patent: 4331363 (1982-05-01), Berisch
patent: 4929033 (1990-05-01), Zander et al.

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