Subclasses list

• 1.5 PACKING EXPANDER OR CONSTRICTOR 
  Patents: 62
  Patent Applications: 2
• 80 SPRING PANEL 
  Patents: 28
  Patent Applications: 16
• 81 Composite springs of diverse material, e.g., metal and non-metal 
  Patents: 20
  Patent Applications: 1
• 82 Vented fluid chamber modifies action of metallic spring 
  Patents: 4
  Patent Applications: 2
• 83 Superposed layers; metal and non-metal 
  Patents: 6
  Patent Applications: 1
• 84 Metal layer is compressible coil spring 
  Patents: 2
  Patent Applications: 0
• 85 Multistage springs 
  Patents: 6
  Patent Applications: 2
• 86 Diverse types of superposed metallic springs 
  Patents: 6
  Patent Applications: 1
• 87 Sinuous spring loading surface supported by other spring 
  Patents: 9
  Patent Applications: 2
• 88 Compressible coil spring loading surface supported by other spring 
  Patents: 3
  Patent Applications: 0
• 89 With means to vary preliminary tension of spring 
  Patents: 31
  Patent Applications: 1
• 90 With means to dampen vibration of springs, e.g., sound deadening 
  Patents: 6
  Patent Applications: 0
• 91 Spring panel comprises vertically oriented compressible coil springs 
  Patents: 61
  Patent Applications: 4
• 92 Plural superposed coils 
  Patents: 6
  Patent Applications: 0
• 93 Panel comprises spring of varying capacities 
  Patents: 16
  Patent Applications: 1
• 94 With padding protector on spring end 
  Patents: 5
  Patent Applications: 0
• 95 Loading surface includes component other than coil spring 
  Patents: 24
  Patent Applications: 1
• 96 With resilient side or end, e.g., edge roll 
  Patents: 5
  Patent Applications: 0
• 97 With reinforcement or extension for border wire 
  Patents: 15
  Patent Applications: 0
• 98 With diagonal surface-to-frame brace 
  Patents: 0
  Patent Applications: 0
• 99 Resiliently mounted on frame by tensile springs 
  Patents: 5
  Patent Applications: 0
• 100 Mounted on frame spanning strips 
  Patents: 23
  Patent Applications: 1
• 101 Spring rows supported by row separating stringers 
  Patents: 8
  Patent Applications: 1
• 102 With cantilevered surface extension, i.e., "soft edge" 
  Patents: 22
  Patent Applications: 2
• 103 Spring means spacing loading surface vertically from plane of supporting frame 
  Patents: 135
  Patent Applications: 7
• 104 With supplementary spacing means intermediate ends of surface 
  Patents: 3
  Patent Applications: 0
• 105 Stiffener or bracer for loading surface 
  Patents: 21
  Patent Applications: 0
• 106 Multiple sections span frame 
  Patents: 17
  Patent Applications: 1
• 107 By inwardly bowed portion, i.e., "fishmouth" type 
  Patents: 30
  Patent Applications: 0
• 108 With coiled apex, i.e., "safety pin" type 
  Patents: 7
  Patent Applications: 0
• 109 By outwardly bowed portion 
  Patents: 5
  Patent Applications: 1
• 110 Panel secured peripherally to supporting frame 
  Patents: 44
  Patent Applications: 1
• 111 Panel secured to tension frame inwardly 
  Patents: 9
  Patent Applications: 0
• 112 Secured by resilient connectors 
  Patents: 14
  Patent Applications: 2
• 2 VEHICLE 
  Patents: 4
  Patent Applications: 10
• 3 Railway 
  Patents: 68
  Patent Applications: 7
• 4 Coil 
  Patents: 20
  Patent Applications: 0
• 5 Perambulator 
  Patents: 4
  Patent Applications: 1
• 6 Bolster 
  Patents: 4
  Patent Applications: 2
• 7 Leaf 
  Patents: 5
  Patent Applications: 2
• 183 Parallel depression (e.g., having stabilizer bar) 
  Patents: 9
  Patent Applications: 0
• 184 Duplex 
  Patents: 1
  Patent Applications: 0
• 185 Single pivot 
  Patents: 0
  Patent Applications: 0
• 186 Fluid stabilizer 
  Patents: 30
  Patent Applications: 2
• 187 Including torque bar or pump 
  Patents: 18
  Patent Applications: 1
• 188 Torque bar or tube stabilizer 
  Patents: 35
  Patent Applications: 5
• 189 And elastomeric member 
  Patents: 25
  Patent Applications: 5
• 190 And coil spring 
  Patents: 15
  Patent Applications: 0
• 191 And retarder 
  Patents: 12
  Patent Applications: 0
• 192 Leaf spring stabilizer 
  Patents: 5
  Patent Applications: 0
• 193 Leaf spring acting between pivoted links 
  Patents: 0
  Patent Applications: 0
• 194 Plural nontorsion coil springs 
  Patents: 1
  Patent Applications: 1
• 195 Mechanical spring and nonresilient retarder (e.g., shock absorber) 
  Patents: 46
  Patent Applications: 26
• 196 Friction (e.g., "snubber") 
  Patents: 29
  Patent Applications: 5
• 197 Including flexible strap connector 
  Patents: 3
  Patent Applications: 0
• 198 Strap forms friction element 
  Patents: 1
  Patent Applications: 0
• 199 Flat spiral spring 
  Patents: 1
  Patent Applications: 0
• 200 Having lubricating feature 
  Patents: 7
  Patent Applications: 0
• 201 Elastomeric spring or friction element 
  Patents: 56
  Patent Applications: 2
• 202 And helical coil spring 
  Patents: 32
  Patent Applications: 1
• 203 Plural coil springs 
  Patents: 6
  Patent Applications: 1
• 204 Friction surface on helical spring 
  Patents: 19
  Patent Applications: 0
• 205 Including cam or wedge friction element or actuator therefor 
  Patents: 30
  Patent Applications: 2
• 206 Helical cam surface 
  Patents: 1
  Patent Applications: 0
• 207 Plural axially spaced expandable friction rings 
  Patents: 8
  Patent Applications: 0
• 208 Including relatively rotating friction surfaces (e.g., drum type) 
  Patents: 3
  Patent Applications: 0
• 209 Including helical coil spring 
  Patents: 10
  Patent Applications: 0
• 210 Transversely oriented coil for biasing friction surfaces 
  Patents: 1
  Patent Applications: 0
• 211 Plural laterally spaced coils (e.g., spring group) 
  Patents: 16
  Patent Applications: 0
• 212 Nested coil springs 
  Patents: 4
  Patent Applications: 0
• 213 Inside friction shell 
  Patents: 1
  Patent Applications: 0
• 214 Friction surface formed on or biased by additional spring 
  Patents: 12
  Patent Applications: 0
• 215 Relatively rotating friction surfaces (e.g., drum type) 
  Patents: 5
  Patent Applications: 1
• 216 Coil spring for biasing vehicle parts and friction surfaces 
  Patents: 23
  Patent Applications: 1
• 217 Fluid retarder 
  Patents: 40
  Patent Applications: 27
• 218 With separate pump or adjustment for spring loading 
  Patents: 71
  Patent Applications: 8
• 219 Elastomeric spring 
  Patents: 503
  Patent Applications: 6
• 220 Mounted at end of retarder 
  Patents: 299
  Patent Applications: 28
• 221 Helical coil spring 
  Patents: 235
  Patent Applications: 21
• 222 Quadrilateral suspension 
  Patents: 8
  Patent Applications: 0
• 223 And rocking actuator arm or rotary fluid displacement member 
  Patents: 3
  Patent Applications: 1
• 224 Plural mechanical springs for biasing vehicle parts 
  Patents: 5
  Patent Applications: 0
• 225 Plural mechanical springs for biasing vehicle parts 
  Patents: 50
  Patent Applications: 5
• 226 Spring within coaxial fluid chamber 
  Patents: 111
  Patent Applications: 5
• 227 Leaf spring 
  Patents: 18
  Patent Applications: 0
• 228 Lever and nontorsion spring 
  Patents: 5
  Patent Applications: 1
• 229 Leaf spring 
  Patents: 17
  Patent Applications: 2
• 230 Quadrilateral suspension 
  Patents: 3
  Patent Applications: 0
• 231 And coil spring 
  Patents: 3
  Patent Applications: 0
• 232 And roller 
  Patents: 1
  Patent Applications: 0
• 233 And "overload" bumper 
  Patents: 0
  Patent Applications: 0
• 234 Including adjustment for spring loading 
  Patents: 2
  Patent Applications: 0
• 235 Adjusting screw coaxial with coil spring 
  Patents: 0
  Patent Applications: 0
• 236 Plural coils between vertically spaced leaf springs 
  Patents: 1
  Patent Applications: 0
• 237 Plural coaxial coils 
  Patents: 0
  Patent Applications: 0
• 238 Nested coils 
  Patents: 1
  Patent Applications: 0
• 239 Having leaf-end-connecting lever 
  Patents: 1
  Patent Applications: 1
• 240 Coil spring between lever and vehicle part 
  Patents: 2
  Patent Applications: 0
• 241 And fluid pressure spring 
  Patents: 12
  Patent Applications: 0
• 242 Including adjustment for spring loading 
  Patents: 11
  Patent Applications: 1
• 243 And roller or bearing to accommodate deflection of spring 
  Patents: 2
  Patent Applications: 0
• 244 Vertically spaced leaf springs (e.g., elliptic) 
  Patents: 3
  Patent Applications: 0
• 245 Having serially pivoted levers at end of spring 
  Patents: 1
  Patent Applications: 0
• 246 Transverse leaf spring 
  Patents: 5
  Patent Applications: 0
• 247 Center acting or resiliently biased lever 
  Patents: 5
  Patent Applications: 0
• 248 Coil spring 
  Patents: 38
  Patent Applications: 1
• 249 Enclosed spring 
  Patents: 20
  Patent Applications: 1
• 250 Plural coaxial coils in enclosure 
  Patents: 11
  Patent Applications: 0
• 251 Plural nontorsion coil springs 
  Patents: 12
  Patent Applications: 0
• 252 Coaxial 
  Patents: 3
  Patent Applications: 0
• 253 Differentially deflected by lever 
  Patents: 4
  Patent Applications: 0
• 254 Quadrilateral suspension 
  Patents: 16
  Patent Applications: 0
• 255 Including adjustment for spring loading 
  Patents: 15
  Patent Applications: 1
• 256 Fluid spring 
  Patents: 43
  Patent Applications: 2
• 257 Elastomeric spring 
  Patents: 29
  Patent Applications: 1
• 258 Annular or spherical 
  Patents: 24
  Patent Applications: 0
• 259 Compound 
  Patents: 27
  Patent Applications: 5
• 23 Leaf, coil, and fluid pressure 
  Patents: 1
  Patent Applications: 0
• 24 Leaf, fluid pressure and liquid 
  Patents: 2
  Patent Applications: 0
• 25 Leaf and torsion 
  Patents: 14
  Patent Applications: 0
• 26 Torsion coil 
  Patents: 4
  Patent Applications: 0
• 27 Leaf-end-connecting 
  Patents: 5
  Patent Applications: 1
• 28 Leaf and coil 
  Patents: 12
  Patent Applications: 1
• 29 Leaf-end-connecting 
  Patents: 2
  Patent Applications: 0
• 30 Leaf and rubber type 
  Patents: 48
  Patent Applications: 0
• 31 Leaf and fluid pressure 
  Patents: 50
  Patent Applications: 1
• 32 Leaf-end-connecting 
  Patents: 13
  Patent Applications: 0
• 33 Coil and rubber type 
  Patents: 135
  Patent Applications: 5
• 34 Coil and fluid pressure 
  Patents: 144
  Patent Applications: 10
• 35 Rubber type and fluid pressure 
  Patents: 178
  Patent Applications: 2
• 36.1 Leaf 
  Patents: 61
  Patent Applications: 13
• 37.1 And covering 
  Patents: 9
  Patent Applications: 1
• 37.2 Spiral or elastic covering 
  Patents: 5
  Patent Applications: 0
• 37.3 Three serially arranged metallic segments 
  Patents: 3
  Patent Applications: 1
• 37.4 Having lubricant reservoir or pad 
  Patents: 1
  Patent Applications: 0
• 38 Twin, axle interposed 
  Patents: 2
  Patent Applications: 1
• 39 Side bar 
  Patents: 2
  Patent Applications: 1
• 40 Longitudinal 
  Patents: 8
  Patent Applications: 0
• 41 Cantilever 
  Patents: 35
  Patent Applications: 1
• 42 Elliptic 
  Patents: 6
  Patent Applications: 0
• 43 Elliptic and leaf 
  Patents: 2
  Patent Applications: 1
• 44 Semielliptic 
  Patents: 10
  Patent Applications: 0
• 45 Semielliptic and leaf 
  Patents: 18
  Patent Applications: 0
• 46 End-to-end connected 
  Patents: 8
  Patent Applications: 0
• 47 Structure 
  Patents: 104
  Patent Applications: 6
• 48 Auxiliary tensioning elements 
  Patents: 20
  Patent Applications: 1
• 49 Antifriction 
  Patents: 15
  Patent Applications: 0
• 50 Lubrication 
  Patents: 1
  Patent Applications: 0
• 51 Broken-spring supports 
  Patents: 11
  Patent Applications: 2
• 52 Intermediate supports 
  Patents: 76
  Patent Applications: 7
• 53 Clips 
  Patents: 11
  Patent Applications: 2
• 260 Having specific end connection 
  Patents: 58
  Patent Applications: 9
• 261 For elliptic spring 
  Patents: 4
  Patent Applications: 1
• 262 Sliding 
  Patents: 25
  Patent Applications: 0
• 263 Including spring for biasing pivotal connection 
  Patents: 10
  Patent Applications: 0
• 264 Including threaded or grooved bearing surface 
  Patents: 4
  Patent Applications: 2
• 265 Including spring position adjustment or geared connection 
  Patents: 12
  Patent Applications: 1
• 266 Universal joint 
  Patents: 4
  Patent Applications: 1
• 267 Having rolling antifriction elements (e.g., ball bearing) 
  Patents: 10
  Patent Applications: 0
• 268 Having lubrication feature 
  Patents: 7
  Patent Applications: 0
• 269 Including elastomeric material 
  Patents: 38
  Patent Applications: 0
• 270 Including tapered bushing or inner and outer sleeve for cylindrical bushing 
  Patents: 22
  Patent Applications: 2
• 271 Including shackle pivoted to spring and to vehicle 
  Patents: 26
  Patent Applications: 3
• 272 Flat spiral 
  Patents: 16
  Patent Applications: 1
• 273 Torsion 
  Patents: 118
  Patent Applications: 19
• 274 Quadrilateral suspension 
  Patents: 16
  Patent Applications: 1
• 275 Helical torsion coil 
  Patents: 26
  Patent Applications: 1
• 276 And separate elastomeric member (e.g., bushing) 
  Patents: 64
  Patent Applications: 6
• 277 And adjustment for varying spring loading 
  Patents: 48
  Patent Applications: 8
• 278 Screw threaded adjustment 
  Patents: 16
  Patent Applications: 1
• 279 Elastomeric torsion spring 
  Patents: 85
  Patent Applications: 1
• 280 Plural axially spaced elastomeric elements 
  Patents: 21
  Patent Applications: 3
• 281 And attached inner and outer metallic sleeves 
  Patents: 75
  Patent Applications: 4
• 282 Plural concentric elastomeric rings 
  Patents: 18
  Patent Applications: 0
• 283 Multilayer leaf 
  Patents: 7
  Patent Applications: 0
• 284 And housing enclosing spring 
  Patents: 19
  Patent Applications: 0
• 285 Plural torsion spring 
  Patents: 18
  Patent Applications: 3
• 286 Coil 
  Patents: 69
  Patent Applications: 17
• 287 Having stiffener 
  Patents: 32
  Patent Applications: 2
• 288 Conical 
  Patents: 6
  Patent Applications: 0
• 289 Plural coils 
  Patents: 22
  Patent Applications: 2
• 290 Nested 
  Patents: 19
  Patent Applications: 1
• 291 Having guide rods extending through coils 
  Patents: 24
  Patent Applications: 1
• 292 Elastomeric 
  Patents: 216
  Patent Applications: 35
• 293 Including central guide rod or tube through spring 
  Patents: 269
  Patent Applications: 45
• 294 Having rigid spacer plate between plural elastomeric segments 
  Patents: 108
  Patent Applications: 8
• 64.11 Comprising compressible fluid 
  Patents: 257
  Patent Applications: 66
• 64.12 Having lockable strut 
  Patents: 206
  Patent Applications: 11
• 64.13 Including compressible liquid 
  Patents: 74
  Patent Applications: 5
• 64.14 Including chamber at sub-atmospheric pressure 
  Patents: 16
  Patent Applications: 1
• 64.15 With retarder 
  Patents: 240
  Patent Applications: 23
• 64.16 Leveling device 
  Patents: 163
  Patent Applications: 14
• 64.17 Self-pumping 
  Patents: 84
  Patent Applications: 12
• 64.18 Having metering pin for varying spring rate 
  Patents: 19
  Patent Applications: 0
• 64.19 Having flexible wall 
  Patents: 87
  Patent Applications: 3
• 64.21 Including rolling lobe between telescoping members 
  Patents: 134
  Patent Applications: 11
• 64.22 Having metering pin for varying spring rate 
  Patents: 47
  Patent Applications: 2
• 64.23 Having flexible wall 
  Patents: 100
  Patent Applications: 8
• 64.24 Including rolling lobe between telescoping members 
  Patents: 187
  Patent Applications: 11
• 64.25 Having plural compressible fluid springs 
  Patents: 80
  Patent Applications: 8
• 64.26 Having telescoping cylinders 
  Patents: 160
  Patent Applications: 8
• 64.27 Having flexible wall 
  Patents: 268
  Patent Applications: 53
• 64.28 Including means for charging or discharging spring 
  Patents: 246
  Patent Applications: 23
• 66 Braces 
  Patents: 16
  Patent Applications: 2
• 67 Yielding 
  Patents: 9
  Patent Applications: 0
• 68 Sliding 
  Patents: 4
  Patent Applications: 0
• 69 ELASTIC EXTENSION DEVICES 
  Patents: 41
  Patent Applications: 8
• 70 Compression spring 
  Patents: 56
  Patent Applications: 8
• 71 Single 
  Patents: 55
  Patent Applications: 6
• 72 Drawbars inclosed 
  Patents: 23
  Patent Applications: 0
• 73 Tension spring 
  Patents: 33
  Patent Applications: 5
• 74 Single 
  Patents: 69
  Patent Applications: 3
• 75 RECIPROCATING-BED-CUSHIONING DEVICES 
  Patents: 14
  Patent Applications: 7
• 113 FLUID 
  Patents: 43
  Patent Applications: 21
• 114 Time delay 
  Patents: 20
  Patent Applications: 2
• 115 Draft gear 
  Patents: 1
  Patent Applications: 0
• 116 Bumper 
  Patents: 70
  Patent Applications: 3
• 117 Cushion for person 
  Patents: 20
  Patent Applications: 3
• 118 Expansible-contractible chamber device 
  Patents: 33
  Patent Applications: 21
• 119 Press cushion 
  Patents: 130
  Patent Applications: 6
• 120 Vehicle; for non-support or accessory support cushioning 
  Patents: 119
  Patent Applications: 18
• 121 Compound 
  Patents: 22
  Patent Applications: 15
• 122 Diaphragm or bellows 
  Patents: 203
  Patent Applications: 20
• 123 For valve or throttle control 
  Patents: 10
  Patent Applications: 1
• 124 Piston 
  Patents: 88
  Patent Applications: 38
• 125 For use in well drilling or operating 
  Patents: 52
  Patent Applications: 3
• 126 System 
  Patents: 34
  Patent Applications: 8
• 127 Trans-piston passage 
  Patents: 35
  Patent Applications: 2
• 128 Rigid-material-spring impelled 
  Patents: 5
  Patent Applications: 0
• 129 Seal 
  Patents: 26
  Patent Applications: 3
• 130 PRESS CUSHION 
  Patents: 60
  Patent Applications: 2
• 131 SEAT SUPPORT 
  Patents: 110
  Patent Applications: 13
• 132 Velocipede or motorcycle 
  Patents: 41
  Patent Applications: 4
• 133 Flexural 
  Patents: 17
  Patent Applications: 5
• 134 FRICTION SNUBBER 
  Patents: 43
  Patent Applications: 1
• 135 Snubbed coil spring or ring pack 
  Patents: 11
  Patent Applications: 0
• 136 RESILIENT SHOCK OR VIBRATION ABSORBER 
  Patents: 531
  Patent Applications: 123
• 137 Tool movement dampening 
  Patents: 105
  Patent Applications: 20
• 138 Draft gear 
  Patents: 33
  Patent Applications: 1
• 139 Bumper 
  Patents: 110
  Patent Applications: 14
• 140 Rubber 
  Patents: 216
  Patent Applications: 10
• 140.11 Including energy absorbing means or feature (e.g., supplemental vehicle equipment, such as motor mount, seat, etc., including additional fluid or friction energy absorber) 
  Patents: 240
  Patent Applications: 63
• 140.12 Having concentric coaxial spring between plural confining means for radial force 
  Patents: 379
  Patent Applications: 35
• 140.13 Axial 
  Patents: 689
  Patent Applications: 107
• 140.14 With electronic or magnetic control 
  Patents: 415
  Patent Applications: 49
• 140.15 With electronic or magnetic control 
  Patents: 176
  Patent Applications: 20
• 140.2 Variably preloaded 
  Patents: 57
  Patent Applications: 11
• 140.3 Having diverse resilient element 
  Patents: 90
  Patent Applications: 11
• 140.4 Metallic and nonmetallic 
  Patents: 81
  Patent Applications: 12
• 140.5 Diverse resistance to vibration along different axes 
  Patents: 105
  Patent Applications: 14
• 141 Nonmetallic, resilient element 
  Patents: 307
  Patent Applications: 81
• 141.1 Plural resilient elements with rigid spacer 
  Patents: 221
  Patent Applications: 22
• 141.2 Confined between coaxial, vibrating annular members 
  Patents: 199
  Patent Applications: 7
• 141.3 Including radial contact surface, e.g., tapered or shouldered member 
  Patents: 90
  Patent Applications: 3
• 141.4 Annular flange or collar embedded in resilient element 
  Patents: 108
  Patent Applications: 0
• 141.5 Flanged or collared innermost member 
  Patents: 34
  Patent Applications: 2
• 141.6 Collapsible wall 
  Patents: 19
  Patent Applications: 0
• 141.7 Arcuate or tapered contact surface 
  Patents: 49
  Patent Applications: 1
• 142 CUSHION FOR HUMAN COMFORT 
  Patents: 28
  Patent Applications: 13
• 143 Compound 
  Patents: 11
  Patent Applications: 5
• 144 Zigzag 
  Patents: 18
  Patent Applications: 2
• 145 Rubber 
  Patents: 33
  Patent Applications: 5
• 146 Fibrous pad 
  Patents: 4
  Patent Applications: 0
• 147 COMPRESSED WIRE MESH 
  Patents: 21
  Patent Applications: 2
• 148 FIBROUS 
  Patents: 124
  Patent Applications: 7
• 149 Glass fiber 
  Patents: 81
  Patent Applications: 2
• 150 CENTERING DEVICE 
  Patents: 110
  Patent Applications: 3
• 151 COMPOUND 
  Patents: 36
  Patent Applications: 10
• 152 Rubber 
  Patents: 166
  Patent Applications: 12
• 153 RUBBER 
  Patents: 387
  Patent Applications: 36
• 154 TORSION 
  Patents: 160
  Patent Applications: 31
• 155 Coil 
  Patents: 114
  Patent Applications: 15
• 156 Volute 
  Patents: 65
  Patent Applications: 6
• 157 Also compressible or expansible 
  Patents: 14
  Patent Applications: 4
• 158 BENDABLE ALONG FLAT SURFACE (E.G., LEAF SPRING) 
  Patents: 204
  Patent Applications: 29
• 159 Snap spring 
  Patents: 29
  Patent Applications: 3
• 160 Flexural support 
  Patents: 207
  Patent Applications: 15
• 161 Ring or annular spider 
  Patents: 139
  Patent Applications: 20
• 162 Pair or pack 
  Patents: 86
  Patent Applications: 8
• 163 Including tang or spider 
  Patents: 41
  Patent Applications: 3
• 164 Bow spring or superposed spring elements 
  Patents: 57
  Patent Applications: 12
• 165 Zigzag or plural 
  Patents: 69
  Patent Applications: 8
• 166 COIL 
  Patents: 140
  Patent Applications: 40
• 166.1 Conical 
  Patents: 33
  Patent Applications: 3
• 167 Circular 
  Patents: 72
  Patent Applications: 14
• 168 Plural, one within another 
  Patents: 81
  Patent Applications: 9
• 169 Including internal brace 
  Patents: 61
  Patent Applications: 7
• 170 Including end thrust member 
  Patents: 71
  Patent Applications: 13
• 171 Equilibrium or over-center 
  Patents: 7
  Patent Applications: 1
• 172 Including cam 
  Patents: 16
  Patent Applications: 3
• 173 Including lever 
  Patents: 22
  Patent Applications: 2
• 174 For dynamic or work environment 
  Patents: 39
  Patent Applications: 4
• 175 Adjustable 
  Patents: 52
  Patent Applications: 5
• 176 Reset 
  Patents: 9
  Patent Applications: 0
• 177 Adjustable 
  Patents: 116
  Patent Applications: 5
• 178 Support type 
  Patents: 37
  Patent Applications: 6
• 179 Particular end connection 
  Patents: 182
  Patent Applications: 17
• 180 Irregular 
  Patents: 107
  Patent Applications: 8
• 181 FORAMINATED 
  Patents: 43
  Patent Applications: 1
• 182 MISCELLANEOUS 
  Patents: 85
  Patent Applications: 18