Motor vehicles – With means for promoting safety of vehicle – its occupant or... – Responsive to absence or inattention of operator – or...
Patent
1984-12-19
1986-12-23
Love, John J.
Motor vehicles
With means for promoting safety of vehicle, its occupant or...
Responsive to absence or inattention of operator, or...
60534, 180282, 180290, 303 22R, 303114, B60K 2800
Patent
active
046307060
ABSTRACT:
A vehicle braking system of the type including a pneumatic booster which includes a shell casing, a flexible diaphragm, a power piston connected to the diaphragm to define a constant pressure chamber and a variable pressure chamber in the shell casing, an input shaft, a valve mechanism provided in the power piston and associated with the input shaft to control the pressure in the variable pressure chamber, an output shaft receiving the output force from the power piston, and a reaction mechanism for transmitting reaction force of the output shaft to the input shaft. The booster further includes a control chamber, and a control piston partitioning the interior of the control chamber into a second constant pressure chamber and a second variable pressure chamber. The pressure in the second variable pressure chamber is controlled by a control mechanism in response to a predetermined operational condition of the vehicle, and the control piston is associated with the input shaft such that the control piston applies a force on the input shaft in the brake applying direction when the control piston is displaced.
REFERENCES:
patent: 2796154 (1957-06-01), Stelzer
patent: 3357311 (1967-12-01), Cripes
patent: 3364818 (1967-01-01), Hager et al.
patent: 3763975 (1973-10-01), Fontaine
patent: 3777841 (1973-12-01), Thorner
patent: 3790223 (1974-02-01), Fontaine
patent: 3795426 (1974-03-01), Sisson
patent: 4076093 (1978-02-01), Mizuno
Haraikawa Tetsuo
Takayama Toshio
Love John J.
Rice Kenneth R.
Tokico Ltd.
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