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Class Number: 303
Class Title: FLUID-PRESSURE BRAKE AND ANALOGOUS SYSTEMS
Subclass Subclass
Number Title
1 MISCELLANEOUS
2 MULTIPLE SYSTEMS
3 .Fluid pressure and electric
4 .Fluid pressure and vacuum
5 MULTIPLE FLUID-RECEIVING DEVICES
6.01 .Multiple motors
6.1 ..Brake and door
7 ..Sectional train
8 ...Multiple brake valves
9 ..Supplementary in emergency
9.61 ..Separate and simultaneous control
9.62 ..Apportioning control
9.63 ...Failure responsive
9.64 ...Motorcycle
9.65 ...Manual
9.66 ...For pneumatic system
9.67 ...Inertia
9.68 ....Inertia weight
9.69 ...Load
9.71 ...Having significant pressure control by front brake
9.72 ...Having multiple pistons affecting fluid flow
9.73 ...Having significant output feature
9.74 ....Multiple outlets
9.75 ...Detail
9.76 ..Spring operated motor
10 WITH PUMP
11 .Pressure control
12 .Vacuum
13 MULTIPLE CONTROL
14 .Double heading
15 .Fluid and electric
16 ..Automatic electric
17 ...Electric impulse
18 EXTERIOR CONTROL
19 .Deadman type
91 SPEED-CONTROLLED
92 .With failure responsive means
93 .Speed responsive braking system with interrelated electronic
anti-skid braking system
94 .Responsive to a comparison of a speed condition to a fixed
standard or reference
95 ..Including electrical control
96 ...With plural similar inputs
97 ...Controlled by acceleration
98 ..With plural similar inputs
99 ..Controlled by acceleration
100 .Responsive to a speed condition and another condition
101 ..With brake control handle
102 ..Responsive to plural speed conditions
103 ...Including electrical control
104 ....By rate of change by braking force or jerk
105 ....Sensing both acceleration and decelerationn
106 .....With further speed condition
107 ....By integrating vehicle and wheel acceleration differences
108 ....By sensed difference between vehicle and wheel deceleration
109 ....By difference between pseudo-vehicle speed and actual
vehicle speed
110 ....One condition releases, another type condition reapplies
111 ....With cross coupling feature or central control module
112 .Torque sensing
113.1 .Having a valve system responsive to a wheel lock signal
113.2 ..With traction control
113.3 ...Including booster
113.4 ..Including a stroke sensor
113.5 ..With system apportioning control
114.1 ..Including hydraulic power booster
114.2 ...Parallel boosters
114.3 ..Including pneumatic power booster
115.1 ..System controlled by expansible chamber type modulator
115.2 ...Having electric control
115.3 ...Having vacuum motor control
115.4 ...Having pump pressure control
115.5 ....Pump pressure operates fluid motor
115.6 ...Including flywheel control (e.g., motorcycle type)
116.1 ..Including pump with system solenoid valve
116.2 ...Having pressure line isolated from master cylinder line
116.3 ..Vehicle wheel operated pump
116.4 ..System pump structure detail
117.1 ..Spool valve
118.1 ..Pneumatic (relay or motorman) type
119.1 ..System controlled by solenoid valve
119.2 ...System solenoid valve detail
20 ELECTRIC CONTROL
22.1 LOAD CONTROL
22.2 .Empty and load type
22.3 ..Alterable for different classes of service
22.4 .Failure responsive
22.5 .Responsive to fluid pressure spring
22.6 .Railway vehicle
22.7 ..Detail
22.8 .Detail
24.1 INERTIA CONTROL
25 AUTOMATIC AND DIRECT
26 .Supplementary control pipe
27 .Direct on control-pipe reduction
28 AUTOMATIC
29 .Supplementary control pipe
30 .Supplementary reservoir pipe
31 .Vacuum
32 .Equilibrium
33 .Equalizing valves
34 ..Rotary type
35 .Synchronizing
36 ..Release
37 ..Quick action
38 ...Service
39 ...Control pipe to chamber
40 .Application valve
41 .Preliminary valve movement
42 ..Emergency preventerss
43 .Slow-reduction emergency
44 .Secondary service operation
45 .Positive-movement equalizing valve
46 .Augmented feed to motor
47 .Train rear end first
48 DIRECT
49 .Liquid link
50 MOTORMAN'S VALVES
51 .Conductor type
52 .Multiple motors
53 ..Engine and train
54 .Equalizing
55 ..Preliminary discharge
56 .Details
* CHARGING
57 .Plurality of pressures
58 .Reuse
59 .Outlet-pressure control
60 ..Maintaining
61 .Intermittent
.Motor
62 ..Motor-movement control
63 ..Failure-system pressure
64 .Auxiliary reservoir
65 ..Motor remaining charged
66 .Control pipe
67 ..Preventers
* RELEASING
68 .Motor
69 ..Quick
70 ..Venting auxiliary reservoir
71 ..Fluid-pressure retracting
72 ..Delayed
73 ...Blow down
74 ...Graduated
75 ..Preventers
76 ...Motorman valve control
77 ...Control-pipe pressure
78 ...Auxiliary-reservoir control
79 ...Loaded valve
80 .Auxiliary reservoir
81 .Control pipe
82 ..By action of control-pipe pressure
83 ..To chamber
84.1 FLOW RETARDER
84.2 .Isolation valve
85 SUPPLEMENTARY RESERVOIR
86 MISCELLANEOUS OPERATIONS ON CONTROL PIPE
87 PULSATION NEUTRALIZERS
89 LOCKS
90 PIPELESS VALVES
* ******************************
* CROSS REFERENCE ART COLLECTIONS
* ******************************
900 ABS throttle control
901 ABS check valve detail
* ******************************
* DIGESTSS
* ******************************
DIG 1 Pressure comparison
DIG 2 Brake control by pressure comparison
DIG 3 .Electrical pressure sensor
DIG 4 ..Pressure signal used in electrical speed controlled
braking circuit