Tamper resistant cover for transmission shift

Details Tamper resistant cover for transmission shift Tamper resistant cover for transmission shift

1997-11-13

1998-12-08

Luong, Vinh T.

Machine element or mechanism

Elements

Gear casings

74335, F16H 5702

Patent

active

058455450

ABSTRACT:
A tamper-resistant technique for retaining the cover of an electronically controlled air pressure piston operated automatic overdrive shifter employed on the auxiliary section of a change-speed transmission for heavy on-highway truck. In one embodiment a spring loaded slider tracks movement of the piston to cam a locking pin into engagement with a blind bolt to prevent removal of the cover when the piston is not in the overdrive position thereby requiring test equipment to operate the controller for cover removal. In another embodiment, the cover mounting has portions frangibly removable upon installation with press-in discs covering the bolts thereafter to deter removal. In another embodiment, a blind recessed roll pin is driven through slots in the bolt head to deter removal.

REFERENCES:
patent: 5178027 (1993-01-01), Kobayashi et al.
patent: 5182966 (1993-02-01), von Kaler et al.
patent: 5195401 (1993-03-01), Mouton
patent: 5211077 (1993-05-01), Louis et al.
patent: 5220854 (1993-06-01), Allart et al.
patent: 5269201 (1993-12-01), Uematsu

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