What follows are the subclasses from one class of the Manual of Classification for US patents. As you scroll through the list and encounter a class/subclass of interest, you can jump back to the top and retrieve patent titles by entering the class/subclass in the box below.
Enter a class/subclass code here to get a list of patent titles. Use
any of the following forms:
363-131 121-55A 14-.5
that is, no embedded spaces, class and subclass seperated by a dash, and any
subclass letters capitalized. Currently Design Patent titles (those in the
classes of the form Dxx.yy) are not retreivable.
Class Number: 267
Class Title: SPRING DEVICES
Subclass Subclass
Number Title
1.5 PACKING EXPANDER OR CONSTRICTOR
80 SPRING PANEL
81 .Composite springs of diverse material, e.g., metal and
non-metal
82 ..Vented fluid chamber modifies action of metallic spring
83 ..Superposed layers; metal and non-metal
84 ...Metal layer is compressible coil spring
85 .Multistage springs
86 .Diverse types of superposed metallic springs
87 ..Sinuous spring loading surface supported by other spring
88 ..Compressible coil spring loading surface supported by other
spring
89 .With means to vary preliminary tension of spring
90 .With means to dampen vibration of springs, e.g., sound
deadening
91 .Spring panel comprises vertically oriented compressible coil
springs
92 ..Plural superposed coils
93 ..Panel comprises spring of varying capacities
94 ..With padding protector on spring end
95 ..Loading surface includes component other than coil spring
96 ..With resilient side or end, e.g., edge roll
97 ..With reinforcement or extension for border wire
98 ..With diagonal surface-to-frame brace
99 ..Resiliently mounted on frame by tensile springs
100 ..Mounted on frame spanning strips
101 ..Spring rows supported by row separating stringers
102 .With cantilevered surface extension, i.e., "soft edge"
103 .Spring means spacing loading surface vertically from plane of
supporting frame
104 ..With supplementary spacing means intermediate ends of surface
105 ..Stiffener or bracer for loading surface
106 ..Multiple sections span frame
107 ..By inwardly bowed portion, i.e., "fishmouth" type
108 ...With coiled apex, i.e., "safety pin" type
109 ..By outwardly bowed portion
110 .Panel secured peripherally to supporting frame
111 ..Panel secured to tension frame inwardly
112 ...Secured by resilient connectors
2 VEHICLE
3 .Railway
4 ..Coil
5 .Perambulator
6 .Bolster
7 ..Leaf
183 .Parallel depression (e.g., having stabilizer bar)
184 ..Duplex
185 ...Single pivot
186 ..Fluid stabilizer
187 ...Including torque bar or pump
188 ..Torque bar or tube stabilizer
189 ...And elastomeric memberr
190 ...And coil spring
191 ...And retarder
192 ..Leaf spring stabilizer
193 ...Leaf spring acting between pivoted links
194 ..Plural nontorsion coil springs
195 .Mechanical spring and nonresilient retarder (e.g., shock
absorber)
196 ..Friction (e.g., "snubber")
197 ...Including flexible strap connector
198 ....Strap forms friction element
199 ....Flat spiral spring
200 ...Having lubricating feature
201 ...Elastomeric spring or friction element
202 ....And helical coil spring
203 .....Plural coil springs
204 ...Friction surface on helical spring
205 ...Including cam or wedge friction element or actuator therefor
206 ....Helical cam surface
207 ....Plural axially spaced expandable friction rings
208 ....Including relatively rotating friction surfaces (e.g., drum
type)
209 ....Including helical coil spring
210 .....Transversely oriented coil for biasing friction surfaces
211 .....Plural laterally spaced coils (e.g., spring group)
212 .....Nested coil springs
213 ......Inside friction shell
214 ...Friction surface formed on or biased by additional spring
215 ....Relatively rotating friction surfaces (e.g., drum type)
216 ...Coil spring for biasing vehicle parts and friction surfaces
217 ..Fluid retarder
218 ...With separate pump or adjustment for spring loading
219 ...Elastomeric spring
220 ....Mounted at end of retarder
221 ...Helical coil spring
222 ....Quadrilateral suspension
223 ....And rocking actuator arm or rotary fluid displacement
member
224 .....Plural mechanical springs for biasing vehicle parts
225 ....Plural mechanical springs for biasing vehicle parts
226 ....Spring within coaxial fluid chamber
227 ...Leaf spring
228 .Lever and nontorsion spring
229 ..Leaf spring
230 ...Quadrilateral suspension
231 ...And coil spring
232 ....And roller
233 ....And "overload" bumper
234 ....Including adjustment for spring loading
235 .....Adjusting screw coaxial with coil spring
236 ....Plural coils between vertically spaced leaf springs
237 ....Plural coaxial coils
238 .....Nested coils
239 ....Having leaf-end-connecting lever
240 .....Coil spring between lever and vehicle part
241 ...And fluid pressure spring
242 ...Including adjustment for spring loading
243 ...And roller or bearing to accommodate deflection of spring
244 ...Vertically spaced leaf springs (e.g., elliptic))
245 ...Having serially pivoted levers at end of spring
246 ...Transverse leaf spring
247 ...Center acting or resiliently biased lever
248 ..Coil spring
249 ...Enclosed spring
250 ....Plural coaxial coils in enclosure
251 ...Plural nontorsion coil springs
252 ....Coaxial
253 ....Differentially deflected by lever
254 ...Quadrilateral suspension
255 ...Including adjustment for spring loading
256 ..Fluid spring
257 ..Elastomeric spring
258 ...Annular or spherical
259 .Compound
23 ..Leaf, coil, and fluid pressure
24 ..Leaf, fluid pressure and liquid
25 ..Leaf and torsion
26 ...Torsion coil
27 ....Leaf-end-connecting
28 ..Leaf and coil
29 ...Leaf-end-connecting
30 ..Leaf and rubber type
31 ..Leaf and fluid pressure
32 ...Leaf-end-connecting
33 ..Coil and rubber type
34 ..Coil and fluid pressure
35 ..Rubber type and fluid pressure
36.1 .Leaf
37.1 ..And covering
37.2 ...Spiral or elastic covering
37.3 ...Three serially arranged metallic segments
37.4 ...Having lubricant reservoir or pad
38 ..Twin, axle interposed
39 ..Side bar
40 ..Longitudinal
41 ..Cantilever
42 ..Elliptic
43 ..Elliptic and leaf
44 ..Semielliptic
45 ..Semielliptic and leaf
46 ...End-to-end connected
47 ..Structure
48 ...Auxiliary tensioning elements
49 ...Antifriction
50 ...Lubrication
51 ..Broken-spring supports
52 ..Intermediate supports
53 ..Clips
260 ..Having specific end connection
261 ...For elliptic spring
262 ...Sliding
263 ...Including spring for biasing pivotal connection
264 ...Including threaded or grooved bearing surface
265 ...Including spring position adjustment or geared connection
266 ...Universal joint
267 ...Having rolling antifriction elements (e.g., ball bearing)
268 ...Having lubrication featuree
269 ...Including elastomeric material
270 ....Including tapered bushing or inner and outer sleeve for
cylindrical bushing
271 ...Including shackle pivoted to spring and to vehicle
272 .Flat spiral
273 .Torsion
274 ..Quadrilateral suspension
275 ..Helical torsion coil
276 ..And separate elastomeric member (e.g., bushing)
277 ..And adjustment for varying spring loading
278 ...Screw threaded adjustment
279 ..Elastomeric torsion spring
280 ...Plural axially spaced elastomeric elements
281 ...And attached inner and outer metallic sleeves
282 ....Plural concentric elastomeric rings
283 ..Multilayer leaf
284 ..And housing enclosing spring
285 ..Plural torsion spring
286 .Coil
287 ..Having stiffener
288 ..Conical
289 ..Plural coils
290 ...Nested
291 ...Having guide rods extending through coils
292 .Elastomeric
293 ..Including central guide rod or tube through spring
294 ..Having rigid spacer plate between plural elastomeric segments
64.11 .Comprising compressible fluid
64.12 ..Having lockable strut
64.13 ..Including compressible liquid
64.14 ..Including chamber at sub-atmospheric pressure
64.15 ..With retarder
64.16 ...Leveling device
64.17 ....Self-pumping
64.18 ....Having metering pin for varying spring rate
64.19 ....Having flexible wall
64.21 .....Including rolling lobe between telescoping members
64.22 ...Having metering pin for varying spring rate
64.23 ...Having flexible wall
64.24 ....Including rolling lobe between telescoping members
64.25 ...Having plural compressible fluid springs
64.26 ...Having telescoping cylinders
64.27 ..Having flexible wall
64.28 ..Including means for charging or discharging spring
66 .Braces
67 ..Yielding
68 ..Sliding
69 ELASTIC EXTENSION DEVICES
70 .Compression spring
71 ..Single
72 ...Drawbars inclosed
73 .Tension spring
74 ..Single
75 RECIPROCATING-BED-CUSHIONING DEVICES
113 FLUID
114 .Time delay
115 .Draft gear
116 .Bumperr
117 .Cushion for person
118 .Expansible-contractible chamber device
119 ..Press cushion
120 ..Vehicle; for non-support or accessory support cushioning
121 ..Compound
122 ..Diaphragm or bellows
123 ...For valve or throttle control
124 ..Piston
125 ...For use in well drilling or operating
126 ...System
127 ....Trans-piston passage
128 ...Rigid-material-spring impelled
129 ...Seal
130 PRESS CUSHION
131 SEAT SUPPORT
132 .Velocipede or motorcycle
133 .Flexural
134 FRICTION SNUBBER
135 .Snubbed coil spring or ring pack
136 RESILIENT SHOCK OR VIBRATION ABSORBER
137 .Tool movement dampening
138 .Draft gear
139 .Bumper
140 ..Rubber
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)
140.12 ..Having concentric coaxial spring between plural confining
means for radial force
140.13 ..Axial
140.14 ...With electronic or magnetic control
140.15 ..With electronic or magnetic control
140.2 .Variably preloaded
140.3 .Having diverse resilient element
140.4 ..Metallic and nonmetallic
140.5 .Diverse resistance to vibration along different axes
141 .Nonmetallic, resilient element
141.1 ..Plural resilient elements with rigid spacer
141.2 ..Confined between coaxial, vibrating annular members
141.3 ...Including radial contact surface, e.g., tapered or
shouldered member
141.4 ....Annular flange or collar embedded in resilient element
141.5 .....Flanged or collared innermost member
141.6 ....Collapsible wall
141.7 ....Arcuate or tapered contact surface
142 CUSHION FOR HUMAN COMFORT
143 .Compound
144 .Zigzag
145 .Rubber
146 .Fibrous pad
147 COMPRESSED WIRE MESH
148 FIBROUS
149 .Glass fiber
150 CENTERING DEVICE
151 COMPOUND
152 .Rubber
153 RUBBER
154 TORSIONN
155 .Coil
156 ..Volute
157 ..Also compressible or expansible
158 BENDABLE ALONG FLAT SURFACE (E.G., LEAF SPRING)
159 .Snap spring
160 .Flexural support
161 .Ring or annular spider
162 ..Pair or pack
163 .Including tang or spider
164 .Bow spring or superposed spring elements
165 ..Zigzag or plural
166 COIL
166.1 .Conical
167 .Circular
168 .Plural, one within another
169 .Including internal brace
170 .Including end thrust member
171 ..Equilibrium or over-center
172 ..Including cam
173 ..Including lever
174 ..For dynamic or work environment
175 ...Adjustable
176 ...Reset
177 ..Adjustable
178 ..Support type
179 ..Particular end connection
180 .Irregular
181 FORAMINATED
182 MISCELLANEOUS
* ******************************
* DIGESTS
* ******************************
DIG 1 Constant height
DIG 2 Constant height, self-pumping
DIG 3 Spring buckle