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

Class
299
MINING OR IN SITU DISINTEGRATION OF HARD MATERIAL

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

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

Subclass		Title
ClassTitle		===> MINING OR IN SITU DISINTEGRATION OF HARD MATERIAL
1.05		AUTOMATIC CONTROL; SIGNALING OR INDICATING
1.1		. Ore/rock interface determination during cutting
1.2		. . On cutter head
1.3		. Of tunneling apparatus having a wall temporary support
1.4		. Of hard material disintegrating machines
1.5		. . Floor working
1.6		. . Sidewall working
1.7		. . . Of advancing material handling means or roof support
1.8		. . Of rotary cutter with advance direction coincident to rotary axis
1.9		. Of material handling means
2		TUNNEL RECOVERY OF FLUID MATERIAL
3		IN SITU CONVERSION OF SOLID TO FLUID
4		. Input and output wells
5		. Dissolving or chemical reaction
6		. Melted material recovered
7		WITH SEPARATION OF MATERIALS
8		. Separation below surface of earth or water
9		. Material mined or excavated underwater
10		PROCESSES
11		. Stabilizing underground structure
12		. Mine safety
13		. Explosive
14		. Directly applying heat or vibration
15		. Forming blocks (e.g., quarrying)
16		. Breaking down by direct contact with fluid
17		. . Jetting (e.g., hydraulic mining)
18		. With material-handling
19		MINE LAYOUTS
20		EXPANSIBLE BREAKING-DOWN DEVICES
21		. Fluid-pressed element
22		. . Piston
23		. Wedge
24		ICE-WORKING DEVICES
25		. Relatively moving cutter
26		. . Reciprocating
27		. . Block-cutting type
28		. . . Plural blades
29		HARD MATERIAL DISINTEGRATING MACHINES
30		. Remote control
31		. Stepper-type advance-causing means
32		. . Planer-type cutter
33		. With mine roof-supporting means
63		. Cutting kerfs to form block
34.01		. Cutter attached to endless chain or cable (e.g., planer type)
34.02		. . With auxiliary cutter
34.03		. . . Roof-type cutter
34.04		. . Planer, plow, or knife details
34.05		. . . With fluid supply
34.06		. . . With vibrator
34.07		. . Drive details
34.08		. . Vertical height adjustment of entire installation
34.09		. . Chain features and connected to miner
34.1		. . Guide, associated with conveyor, for chain or supply lines
34.11		. . Guide for adjustment of cutter
34.12		. . Pivoting cutter body
35		. Wire saw-type cutter
36.1		. Floor-working
37.1		. . Reciprocating or oscillating cutter
37.2		. . . Resonant vibrator driven
38.1		. . . Narrow, channel-forming type
37.3		. . Impact or hammering type cutter
37.4		. . . Hydraulic piston and cylinder type
37.5		. . . Hammer and anvil type
39.1		. . Rotary cutter
39.2		. . . With material handling
39.3		. . . Slot-type cutter; e.g., pavement saw
39.4		. . . Drum-type
39.5		. . . . Shiftable horizontally
39.6		. . . . Height adjustment
39.7		. . . . Yieldably mounted cutter
39.8		. . . . Specific mount for fixed projecting cutters
39.9		. . . And having rotatable cutting element
40.1		. . . Freely rolling cutter
41.1		. . . Vertical cutter axis
42		. Sidewall-working (e.g., drum-type cutter)
43		. . With material-handling means
44		. . . Undercutting, dislodging and conveying
45		. . . Material handler enters cut with cutter
46		. . . Rotary impeller
47		. . Driven flexible member causes advance
48		. . . Cutter shiftable horizontally
49		. . . Driver for member rotates about horizontal axis
50		. . . . Axis transverse to direction of advance
51		. . Horizontal cutter tooth orbit
52		. . . Cutter shiftable horizontally
53		. . Vertical cutter tooth orbit
54		. . . Cutter bodily shiftable horizontally
55		. Rotary cutter head with advance direction coincident to rotary axis
56		. . With material-handling means
57		. . . Cooperates with laterally spaced heads
58		. . Machine follows cutter into opening formed thereby
59		. . . Relatively driven cutters
60		. . . . Cutting area of one encircled by another
61		. . . Radially adjustable cutting area
62		. . . With percussive-type cutter
64		. With material-handling means
65		. . Undercutting, dislodging and conveying
66		. . . Undercutter shiftable horizontally
67		. . Material handler enters cut with cutter
68		. . Rotary impeller
69		. Percussive-type cutter
70		. . Cutter shiftable horizontally
71		. Relatively shiftable cutters
72		. Shiftable to operate in vertical or horizontal cutter tooth orbit
73		. Cutter shiftable horizontally
74		. . Horizontal cutter tooth orbit
75		. . Shiftable vertically
76		. Cutter shiftable vertically
77		. Horizontal cutter tooth orbit
78		. Vertical cutter tooth orbit
79.1		CUTTER TOOTH OR TOOTH HEAD
85.1		. Plural heads moving relative to each other
80.1		. Adjustable head
81.1		. Cleansing fluid passage
81.2		. . Fluid feed distributor or controller (e.g., manifold)
81.3		. . Nozzle or seal details
82.1		. Endless-chain type head
83.1		. . Plural teeth on single link
84.1		. . Nontracking tooth arrangement
85.2		. Adjustable tooth
87.1		. Tooth mounted on helical head portion or head with helical conveying portion
100		. Percussive tooth or bit
101		. Plural cutting edges on tooth, pick, or bit
102		. Clamped tooth holder or tooth mount
103		. Clamped tooth
104		. Wear shield or replaceable wear sleeve
105		. Wear resistant feature for tool body (e.g., hard facing)
106		. Rolling or rotatable type bit mount
107		. . Having a spring biased retainer
108		. Planar type bit mount
109		. . Tooth mounting spring biased
110		. Rolling or rotatable bit
111		. . Insert or tip shape
112		. Planer-type cutter insert or tip shape
113		. Insert or tip mounting feature (e.g., soldering, brazing, friction or interference fit)
95		MISCELLANEOUS

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Last Modified: 6 October 2000