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Class Information
Number: 299
Name: Mining or in situ disintegration of hard material >
Description: This class provides for (a) the obtaining of valuable, naturally occurring minerals from the earth in a solid state (the phrase "solid state" including a state in which the minerals are in the form of particles of larger size than colloidal), (b) the obtaining of ice from a naturally occurring bed of ice, (c) the obtaining of naturally occurring, nonhydrocarbon, solid, valuable, minerals from the earth in a fluid state (the phrase "fluid state" including a dissolved state or a state of colloidal dispersion or suspension) or (d) the obtaining of any naturally occurring valuable material from the earth in a solid or fluid state when this is accomplished by the claimed use of a substantially horizontal tunnel providing a working space for human beings.










Class Number Class Name No. of Patents
299/1.05

Automatic control; signaling or indicating

61
299/1.4

Of hard material disintegrating machines

40
299/1.5

Floor working

58
299/1.8

Of rotary cutter with advance direction coincident or parallel to rotary axis

27
299/1.6

Sidewall working (e.g., longwall-type)

68
299/1.7

Of advancing material handling means or roof support

29
299/1.9

Of material handling means

21
299/1.3

Of tunneling apparatus having a wall temporary support

42
299/1.1

Ore/rock interface determination during cutting

44
299/1.2

On cutter head

14
299/79.1

Cutter tooth or tooth head

38
299/80.1

Adjustable head

45
299/85.2

Adjustable tooth

20
299/102

Clamped tooth holder or tooth mount

88
299/103

Clamped tooth

41
299/81.1

Cleansing fluid passage

63
299/81.2

Fluid feed distributor or controller (e.g., manifold)

72
299/81.3

Nozzle or seal details

45
299/82.1

Endless-chain type head

34
299/84.1

Nontracking tooth arrangement

8
299/83.1

Plural teeth on single link

11
299/113

Insert or tip mounting feature (e.g., soldering, brazing, friction or interference fit)

96
299/100

Percussive tooth or bit

43
299/108

Planar type bit mount

49
299/109

Tooth mounting spring biased

36
299/112R

Planar type bit

26
299/112T

Planer-type cutter insert or tip shape

2
299/101

Plural cutting edges on tooth, pick, or bit

31
299/85.1

Plural heads moving relative to each other

31
299/110

Rolling or rotatable bit

60
299/111

Insert or tip shape

98
299/106

Rolling or rotatable type bit mount

115
299/107

Having a spring biased retainer

109
299/87.1

Tooth mounted on helical head portion or head with helical conveying portion

76
299/105

Wear resistant feature for tool body (e.g., hard facing)

41
299/104

Wear shield or replaceable wear sleeve

121
299/20

Expansible breaking-down devices

13
299/21

Fluid-pressed element

21
299/22

Piston

21
299/23

Wedge

28
299/29

Hard material disintegrating machines

13
299/34.01

Cutter attached to endless chain or cable (e.g., planer type)

8
299/34.09

Chain features and connected to miner

5
299/34.07

Drive details

20
299/34.11

Guide for adjustment of cutter

18
299/34.1

Guide, associated with conveyor, for chain or supply lines

31
299/34.12

Pivoting cutter body

10
299/34.04

Planer, plow, or knife details

11
299/34.05

With fluid supply

7
299/34.06

With vibrator

0
299/34.08

Vertical height adjustment of entire installation

10
299/34.02

With auxiliary cutter

4
299/34.03

Roof-type cutter

4
299/73

Cutter shiftable horizontally

25
299/74

Horizontal cutter tooth orbit

7
299/75

Shiftable vertically

102
299/76

Cutter shiftable vertically

65
299/63

Cutting kerfs to form block

3
299/36.1

Floor-working

95
299/37.3

Impact or hammering type cutter

32
299/37.5

Hammer and anvil type

27
299/37.4

Hydraulic piston and cylinder type

23
299/37.1

Reciprocating or oscillating cutter

72
299/38.1

Narrow, channel-forming type

3
299/37.2

Resonant vibrator driven

21
299/39.1

Rotary cutter

40
299/39.9

And having rotatable cutting element

17
299/39.4

Drum-type

93
299/39.6

Height adjustment

79
299/39.5

Shiftable horizontally

25
299/39.8

Specific mount for fixed projecting cutters

62
299/39.7

Yieldably mounted cutter

3
299/40.1

Freely rolling cutter

26
299/39.3

Slot-type cutter; e.g., pavement saw

94
299/41.1

Vertical cutter axis

66
299/39.2

With material handling

57
299/77

Horizontal cutter tooth orbit

3
299/69

Percussive-type cutter

48
299/70

Cutter shiftable horizontally

37
299/71

Relatively shiftable cutters

32
299/30

Remote control

60
299/55

Rotary cutter head with advance direction coincident or parallel to rotary axis

38
299/58

Machine follows cutter into opening formed thereby

27
299/61

Radially adjustable cutting area

14
299/59

Relatively driven cutters

21
299/60

Cutting area of one encircled by another

12
299/62

With percussive-type cutter

11
299/56

With material-handling means

88
299/57

Cooperates with laterally spaced heads

39
299/72

Shiftable to operate in vertical or horizontal cutter tooth orbit

6
299/42

Sidewall-working (e.g., longwall cutter)

51
299/47

Driven flexible member causes advance

3
299/48

Cutter shiftable horizontally

2
299/49

Driver for member rotates about horizontal axis

2
299/50

Axis transverse to direction of advance

3
299/51

Horizontal cutter tooth orbit

2
299/52

Cutter shiftable horizontally

3
299/53

Vertical cutter tooth orbit

29
299/54

Cutter bodily shiftable horizontally

6
299/43

With material-handling means

205
299/45

Material handler enters cut with cutter

24
299/46

Rotary impeller

5
299/44

Undercutting, dislodging and conveying

3
299/31

Stepper-type advance-causing means

140
299/32

Planer-type cutter

21
299/78

Vertical cutter tooth orbit

42
299/35

Wire saw-type cutter

11
299/64

With material-handling means

165
299/67

Material handler enters cut with cutter

81
299/68

Rotary impeller

25
299/65

Undercutting, dislodging and conveying

6
299/66

Undercutter shiftable horizontally

8
299/33

With mine roof-supporting means

187
299/24

Ice-working devices

28
299/25

Relatively moving cutter

16
299/27

Block-cutting type

0
299/28

Plural blades

0
299/26

Reciprocating

3
299/3

In situ conversion of solid to fluid

30
299/5

Dissolving or chemical reaction

190
299/4

Input and output wells

161
299/6

Melted material recovered

35
299/19

Mine layouts

133
299/95

Miscellaneous

38
299/10

Processes

85
299/16

Breaking down by direct contact with fluid

58
299/17

Jetting (e.g., hydraulic mining)

227
299/14

Directly applying heat or vibration

116
299/13

Explosive

222
299/15

Forming blocks (e.g., quarrying)

32
299/12

Mine safety

225
299/11

Stabilizing underground structure

211
299/18

With material-handling

208
299/2

Tunnel recovery of fluid material

280
299/7

With separation of materials

59
299/9

Material mined or excavated underwater

51
299/8

Separation below surface of earth or water

78
 
 
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