Manual of U.S. Patent Classification
as of June 30, 2000

Class
404
ROAD STRUCTURE, PROCESS, OR APPARATUS

Class definitions may be accessed by clicking on the class title, above.
Subclass definitions may be accessed by clicking on the subclass number, below.

Patents classified in a subclass may be accessed by clicking on the " " icon following the subclass number, below.

( please note that links to definitions and classified patents may not be available for some classes and subclasses )

For search strategies, please refer to the Classification Index Explanation of Data web page.

Subclass		Title
ClassTitle		===> ROAD STRUCTURE, PROCESS, OR APPARATUS
1		ROAD SYSTEM (E.G., ELEVATED, INTERCHANGE)
2		DRAIN OR GUTTER
3		. With conduit support means
4		. Street or curb inlet for surface drainage
5		. . Separately attached curb box
6		TRAFFIC STEERING DEVICE OR BARRIER
7		. Curb
8		. . With rim or edge protector
9		TRAFFIC DIRECTOR
10		. Yielding
11		. . Distinct biasing means recessed in roadway
12		. Attenuated lane marker type
13		. . Discrete interfitted element
14		. . Impregnated with reflective material
15		. Vibration inducing member (e.g., road stud, speed bump)
16		. . Including reflector
17		PAVEMENT
18		. Combined sheet and preformed module
19		. Anti-slip surface
20		. . Abrasive impregnated
21		. . Including metal
22		. Including light admitting means
23		. . With removable lens
24		. . Concrete frame
25		. Vault cover-closure
26		. . Elevation or level adjustment
27		. Including bed
28		. . Having preformed element layer
29		. . . Blocks
30		. . . Having irregular aggregate module
31		. . Plural layers
32		. Rubber or rubber-like
33		. . Integral key to base
34		. Modules or blocks (preformed)
35		. . Portable mat type
36		. . . Foraminous traffic surface
37		. . Including spacer means
38		. . . Integral
39		. . . . Bevel or incline edge
40		. . With separate interlocking member
41		. . Interfitting
42		. . Patterned
43		. . Supported by footing or beam
44		. . Composite or compound
45		. . Reinforced
46		. . Wood
47		. Including joint means
48		. . With transitory core, cap, screed, or installation means (e.g., forms)
49		. . With internal cavity for deformable filler
50		. . With offset or keyed slab ends
51		. . . Plus bridge or dowel means
52		. . With articulated dowel means
53		. . With underlying bridge for adjacent slab ends
54		. . . And overlying bridge means
55		. . . Janus-faced angle member
56		. . With mid-slab bridge means
57		. . . Sliding plate pair
58		. . . . Horizontal slide plane
59		. . . End cushioned or lubricated dowel
60		. . . Sleeved or telescoped at joint
61		. . . Cantilevered dowel or only filler support
62		. . . Supported dowel end
63		. . . . And supported dowel end
64		. . Preformed non-metallic only
65		. . . Externally profiled
66		. . . Encased, laminated or composite
67		. . Compound or composite
68		. . Strip or filler plus supporting bracket
69		. . Sealing cap or filler support
70		. Reinforced structure
71		MISCELLANEOUS ROAD STRUCTURE (E.G., HEATED PAVEMENT)
72		PROCESS
73		. Handling or treating preformed modular unit
74		. Providing expansion joint
75		. In situ treatment of earth or roadway
76		. . Dust fixation or soil stabilization
77		. . Heating
78		. . Raising sunken pavement
79		. Heating
80		. . Including separate handling of different sized aggregate
81		. Separate handling of different sized aggregate
82		. Sequential construction of diverse layers
83		APPARATUS
84.05		. Automatic control
84.1		. . Of material leveling means
84.2		. . . Adjusted to a predetermined path
84.5		. . . Adjusted to an acoustical or optical signal
84.8		. . . Specific to a sloped or curved application
85		. With means for alternative ground support by tool or transport means
86		. . Tool attachment type
87		. Means to install or form joint
88		. . And means to hold or position dowel
89		. . Means to form groove in plastic or uncured roadway
90		. With in situ means for both comminuting and treating, e.g., grading, oiling, stabilizing
91		. . Including removal and redepositing means
92		. With means for in situ material preparation, e.g., mixing
93		. With surface marking (or grooving)
94		. . Applied to existing hard surface
95		. With means for heating a road base, surface, or material
96		. With means for profile shaping, e.g., crown
97		. . Manually propelled
98		. . Curb or gutter
99		. Block laying
100		. Reinforcement material placing, laying or positioning
101		. Material distribution means
102		. . Including dynamic means to densify material
103		. . . Leveling or smoothing roller
104		. . Shoulder paving or surface widening
105		. . With material supply to self-contained side forms, e.g., slip-forms
106		. . With material supply to unit-supporting rail type side forms
107		. . Joint or crack filling
108		. . Including material supply
109		. . . Boom and bucket type
110		. . . Portable spreader box
111		. . . Liquid supply
112		. Tool rotating in horizontal plane
113		. Means to agitate material
114		. . Mounted on screed
115		. . Material immersed agitating means
116		. . . Individual element, vertically oriented
117		. . Compacting roller with vibrating means
118		. Screed or drag
119		. . Supported on rail type side forms
120		. . Reciprocating
121		. Sheep foot roller
122		. Rotating drum, roller or tire
123		. . Three tandem rollers
124		. . Roller periphery characteristics
125		. . Plural roll axes angularly shiftable
126		. . Plural roll axes relatively shiftable
127		. . Specific to slope, trench or shoulder application
128		. . Attachment or combined
129		. . With means to lubricate, scrape or clean roller surface
130		. . Shiftable or variable ballast
131		. . Manually propelled, e.g., lawn roller
132		. . Plural rolls with common axes
133.05		. Tamper
133.1		. . Manually guided
133.2		. . Attached to a disparate device
134		REINFORCEMENT STRUCTURE PER SE
135		. With road chair
136		ROAD CHAIR PER SE

Information Products Division -- Contacts

Questions regarding this report should be directed to:

U.S. Patent and Trademark Office
Information Products Division
PK3- Suite 441
Washington, DC 20231

tel: (703) 306-2600
FAX: (703) 306-2737
email: oeip@uspto.gov

---

Last Modified: 6 October 2000