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Class Information
Number: 279
Name: Chucks or sockets >
Description: This is the generic class for a chuck or a socket, per se, that is not elsewhere classified, and which includes a means for making a permanent or temporary and readily-releasable connection between a holder and an object, such as a tool, work-piece, or rod-like body, where the gripping means or seat is on or within the holder or base member.










Class Number Class Name No. of Patents
279/142

Accessory or component

14
279/143

Adapter

116
279/144

Drive conversion

36
279/145

For particular tool or workpiece

100
279/147

Chuck key

47
279/149

Key holding or attaching means

34
279/150

Nonseparable or built-in

27
279/148

Safety feature; e.g., ejector, interlock

16
279/152

Jaw insert

23
279/153

Machinable jaw

34
279/154

Locking or positioning means

19
279/151

Padded or cushioned jaw

18
279/157

Protection means; e.g., cover, seal, overstress prevention, air blast

98
279/146

Sliding cam chuck actuator

13
279/156

Tool or work stop or locator

114
279/155

Tool or workpiece ejector

68
279/900

Adapted for automatic tool changer

64
279/5

Angularly adjustable or indexing

55
279/129

By centrifugal force

20
279/130

To counterbalance jaws

51
279/131

To grip tool or workpiece

43
279/901

Chuck or chuck jaw changing means

26
279/132

Compensation for eccentricity

50
279/127

Double acting

21
279/6

Eccentric

49
279/2.01

Expanding

21
279/2.1

Axially moving actuator

18
279/2.17

Axially compressible element expands radially

32
279/2.18

Lever

9
279/2.16

Toggle

8
279/2.11

Wedge

51
279/2.12

Internal cone

62
279/2.13

With jaw positively interlocked with wedge; e.g., dovetail or t-slot

17
279/2.14

With resilient means contacting nonresilient jaw

8
279/2.15

Constricting band, annulus, or clip

18
279/2.02

Collet type

28
279/2.04

Fixed cam and moving jaws

18
279/2.03

Fixed jaws and moving cam

58
279/2.06

Fluid-pressure actuator

12
279/2.07

Directly expanding jaws

32
279/2.08

Jaw is expansible chamber; i.e., bladder type

55
279/2.09

Expanding jaws via mechanical connection

43
279/2.21

Jaw structure

8
279/2.23

Ball or roller

28
279/2.24

Pivoted

23
279/2.22

Resilient

26
279/2.05

Jaws mounted on flexible member; i.e., diaphragm

10
279/2.19

Rotary actuator

20
279/2.2

Clutch or self-actuating type

15
279/136

For gear or spline molding

15
279/139

Jaws mounted on flexible member; i.e., diaphragm

24
279/902

Keyless type socket

262
279/8

Longitudinal screw clamp

100
279/140

Means to prevent jaw loosening

171
279/141

Member applies axial force component

67
279/158

Miscellaneous

89
279/137

More than one set of gripping means

105
279/903

Needle roller type socket

17
279/106

Pivoted jaw

106
279/107

Cam-sleeve actuated

17
279/108

Internal-cone actuated

6
279/109

Toggle actuated

15
279/904

Quick change socket

91
279/905

With ball detent

145
279/110

Radially reciprocating jaws

109
279/122

External-cone actuated

3
279/123

Jaws

173
279/124

With means to facilitate jaw removal

44
279/119

Lever actuated

40
279/120

Internal cone

4
279/117

Rack-and-pinion actuated

5
279/114

Spiral cam or scroll actuated

37
279/116

Bevel pinion

6
279/115

Worm

3
279/118

Toggle actuated

19
279/112

Transverse-screw actuated

13
279/113

Annular rack

4
279/121

Wedge actuated

117
279/111

With indicator

17
279/906

Self grasping socket

53
279/134

Separate chuck-actuating power source

48
279/135

Self-contained

13
279/9.1

Socket type

35
279/105.1

Adjustable length or size

10
279/104

Barbed or pronged tang

3
279/95

Bottomless

2
279/96

Friction grip

9
279/32

Conical clamp threaded in socket

3
279/20.1

Feed type

13
279/20

Fluid-conduit drill holding

114
279/102

Friction grip

75
279/103

Drill type

75
279/55

Loose jaws

13
279/58

Fixed cam and moving jaws

24
279/59

Threaded sleeve and body

14
 

Moving-cam actuator

 
279/57

Reciprocating cam sleeve

28
279/56

Threaded cam sleeve

25
279/19

Lost motion

47
279/19.5

Key retainer

32
279/19.3

Rotary socket

56
279/19.6

Sleeve type retainer

30
279/19.7

Sleeve in socket

10
279/19.4

Spreading elements

45
279/19.1

Swinging external yoke or detent

18
279/19.2

Rotary socket

2
279/105

Molded or cast-in tang

1
279/14

Multiple alternative

48
279/60

Obliquely guided reciprocating jaws

145
279/65

Reciprocating jaw advancing sleeve

16
279/63

Threaded central cone and jaw

19
279/64

Threaded sleeve and body

35
279/61

Threaded sleeve and jaw

38
279/62

Conical sleeve

295
279/44

One movable side

9
279/45

Sleeved

3
279/35

Pivoted jaws

33
279/38

Fixed cam and moving jaws

10
279/39

Axial screw actuator

1
279/40

Threaded-sleeve actuator

0
 

Moving-cam actuator

 
279/37

Reciprocating cam sleeve

19
279/36

Threaded cam sleeve

5
279/66

Radially reciprocating jaws

17
 

Moving-cam actuator

 
279/74

Reciprocating cam sleeve

58
279/75

Ball or roller jaws

255
279/71

Rotary eccentric-cam sleeve

69
279/72

Roller and rocking jaw

9
279/73

Worm actuated

4
279/69

Threaded cam sleeve

9
279/70

Threaded sleeve and wedge

2
279/67

Transverse-screw actuated

21
279/68

Interlaced jaws

0
 

Resilient split socket

 
279/43.7

Nonresilient member biased by a resilient member

8
279/43

Reciprocating cam sleeve

26
279/43.8

Resilient member reinforced by another resilient member

2
279/42

Threaded cam sleeve

51
279/43.1

Unitary

16
279/43.2

Split at one end only

21
279/43.4

Cam actuator

19
279/43.3

Transverse screw actuator

6
279/43.5

Split end to end

12
279/43.6

With jaw pads or insert

6
279/99

Screw threaded

23
279/100

Nut lock

4
279/101

Threaded sleeve

13
279/16

Self-centering of floating

61
279/17

Radially reciprocating jaws

5
279/18

Transverse holder and setscrew

5
 

Self-grasping

 
 

One-way-clutch type

 
279/29

Side detent

18
279/30

Ball or roller

55
279/28

Wedge

10
279/24

Yielding detent

18
 

Yielding grasping jaws

 
279/22

Ball or roller

77
279/23.1

Spring jaws

30
279/89

Shouldered-tang holding

47
279/90

Cap

10
279/91

Screw

21
279/76

Side detent

53
279/87

Longitudinal clamping wedge

8
279/77

Pivoted or rotary

51
279/78

Sleeved

14
279/85

Plural bolt

3
279/82

Reciprocating sleeve

104
279/81

Rotary cam sleeve

59
279/83

Set screw

89
279/86

Single transverse bolt

10
279/79

Spring

73
279/80

Sleeved

20
279/84

U-clamp

8
279/46.1

Spring biased jaws

14
279/51

Fixed cam and moving jaws

86
279/53

Axial screw actuator

25
279/52

Threaded-sleeve actuator

40
279/54

Loose jaws

19
 

Moving-cam actuator

 
279/50

Reciprocating cam sleeve

104
279/48

Threaded cam sleeve

50
279/49

Loose jaws

15
279/47

Threaded sleeve and wedge

10
279/46.7

Nonresilient member biased by a resilient member

60
279/46.8

Resilient member reinforced by another resilient member

12
279/46.2

Unitary

23
279/46.4

Split at both ends

27
279/46.3

Split at one end only

36
279/46.5

Split end to end

10
279/46.6

With jaw pads or insert

18
279/46.9

With means to exclude contaminants; e.g., seal, shield

26
279/93

Tang offset within socket

44
279/94

Tang offset without socket

2
279/97

Transverse pin

54
279/33

Transversely oscillating jaws

24
279/34

Screw actuated

6
279/43.9

With means to exclude contaminants; e.g., seal, shield

5
279/7

Threaded grip

18
279/138

Torsion mandrel

5
279/3

Vacuum

154
279/907

Washer type jaw or actuator

12
279/133

With centering means

146
279/4.01

With fluid-pressure actuator

53
279/4.03

Jaw is expansible chamber; i.e., bladder type

56
279/4.05

Jaws mounted on flexible member; i.e., diaphragm

15
279/4.04

Pneumatic type

32
279/4.1

Radially reciprocating jaws

8
279/4.11

Fluid pressure directly moves jaws

27
279/4.12

Fluid pressure moves jaws via mechanical connection

93
279/4.06

Socket type

43
279/4.07

Collet

28
279/4.08

Fixed cam and moving jaws

26
279/4.09

Moving cam and fixed jaws

39
279/4.02

With measuring, indicating or control means

53
279/128

With magnetic or electrostatic means

362
279/126

With measuring, indicating or control means

65
279/125

With safety feature

53
 
 
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