What follows are the subclasses from one class of the Manual of Classification for US patents. As you scroll through the list and encounter a class/subclass of interest, you can jump back to the top and retrieve patent titles by entering the class/subclass in the box below.
Enter a class/subclass code here to get a list of patent titles. Use
any of the following forms:
363-131 121-55A 14-.5
that is, no embedded spaces, class and subclass seperated by a dash, and any
subclass letters capitalized. Currently Design Patent titles (those in the
classes of the form Dxx.yy) are not retreivable.
Class Number: 440
Class Title: MARINE PROPULSION
Subclass Subclass
Number Title
1 MEANS TO CONTROL THE SUPPLY OF ENERGY RESPONSIVE TO A SENSED
CONDITION
2 WITH INDICATOR
3 DIVERSE ENGINE MEANS
4 PLURAL ENGINES WITH SINGLE PROPELLING MEANS
5 HYDRAULIC FLUID DRIVE FOR PROPELLING MEANS
6 ELECTRIC DRIVE FOR PROPELLING MEANS
7 .With foot control
8 WIND DRIVEN MOTORS
9 WAVE POWERED PROPELLING MEANS
10 .By oscillating weight
11 POWERED FROM LAND VEHICLE SUPPORTED BY VESSEL
12 .Land vehicle is two-wheel type
13 OSCILLATING PROPELLING MEANS
14 .Fishtail motion propelling means
15 ..Flexible
16 .Moving wave propeller
17 .Having nonpropelling cycle segment
18 ..Piston and cylinder
19 ..With means to move propelling element to nonpropelling
position
20 ..With reversing means
21 OPERATOR POWERED DRIVE FOR PROPELLING MEANS
22 .Rocking watercraft
23 .Fluid pump
24 .Having reciprocating pull cable
25 .Sliding handle or pedal
26 .Rotary cranking arm
27 ..Plural-crank type
28 ..Having flexible drive shaft
29 ..Having endless drive member
30 ...Chain and sprocket
31 ..Including gear means
32 .Lever with connecting linkage
33 TOWING
34 .Cable system
35 .Track system
36 .Ground wheel or poler
37 AIR PROPELLED BOAT
38 JET DRIVE
39 .Auxiliary use of propulsive fluid
40 .Direction control for fluid jet
41 ..With bucket or clamshell-type reversing means
42 ..Pivoted outlet
43 ..Pivoted vane
44 .Propulsion fluid is pressurized gas
45 ..Produced by combustion
46 .Having means to prevent clogging
47 .Having means to increase fluid drive means efficiency
48 HELICAL SCREW
49 SCREW PROPELLER
50 .Variable pitchh
51 .Combined with rudder
52 .With vibration dampening
53 .With means effecting or facilitating movement of propulsion
unit or a segment of the propulsion unit (e.g., tilting or
steering)
54 ..With means limited to vertical movement within hull cavity
55 ..Having restraining means
56 ...With releasing means when propulsion unit hits obstruction
57 ..Having gimbal or universal joint support
58 ..Having toothed or threaded member to move propulsion unit or a
segment of the propulsion unit
59 ...Screw type
60 ...Rack and pinion
61 ..Having fluid motor to move propulsion unit or a segment of the
propulsion unit
62 ..Having pliant member to move propulsion unit or a segment of
the propulsion unit
63 ..Having link or lever to move propulsion unit or a segment of
the propulsion unit
64 ..Having shaft with releasable coupling
65 ..With means to lift propeller when an obstruction is hit
66 .Having means to control flow around propeller
67 ..Nozzle (Kort-Type)
68 ..Hull channel
69 ...With open bottom
70 ..Hull concavity
71 .Propeller guard
72 ..Cage or screen
73 .Self-clearing
74 .Shaft braking or locking
75 .Having transmission
76 .Propulsion unit casing
77 ..Cowl
78 ..Propeller shaft housing
79 .Propeller arrangement
80 ..Tandem
81 ...On single shaft
82 ..Supporting strut
83 .Shafting
84 ENGINE, MOTOR, OR TRANSMISSION CONTROL MEANS
85 .For starter means
86 .For transmission
87 .For engine speed
88 MEANS FOR HANDLING ENGINE FLUIDS
89 .Exhaust gas handling means
90 PADDLE WHEEL
91 .Having means to reposition paddle wheel assembly
92 .Having means to retract paddle or change paddle attitude
93 ..Having means to provide cyclic change of paddle attitude
(e.g., Voith Schneider)
94 UPRIGHT REMAINING ORBITING PADDLES
95 FLEXIBLE ENDLESS PROPELLING MEANS
96 .With paddle
97 ..Foldable or retractable to nonpropelling position
98 BUOYANT PROPELLING MEANS
99 .Rotating outer hull
100 .Wheellike
101 OAR OR PADDLEE
102 .Articulated sectional oar or paddle
103 ..Having gear
104 .Support
105 ..Having outrigger
106 ..Oarlock
107 ...Having oar shaft restraining means
108 ...Separate mounting means
109 ....Socket type
110 ..Having guard for oar
111 INBOARD ENGINE MOUNT
112 .Having thru-hull sealing means
113 MISCELLANEOUS
* ******************************
* CROSS-REFERENCE ART COLLECTION
* ******************************
900 OUTBOARD MOTORS AND OUTDRIVES