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Class Numbers & Titles | Class Numbers Only | USPC Index | International | HELP |
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Class 271 | SHEET FEEDING OR DELIVERING |
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1 | SPECIAL ARTICLES |
3.01 | DELIVERING TO STACK AND FEEDING THEREFROM |
3.02 | Aligning at stack |
3.03 | Intermediate tray |
3.04 | With job divider (e.g., resettable bail bar or double bar separator) |
3.05 | Feeding from bottom of stack |
3.08 | Feeding from top of stack |
3.12 | Sheets on edges |
3.13 | With sheet sensor for selective location |
3.14 | FEEDING AND DELIVERING |
3.15 | Sensor located at the feeder and controls the delivering |
3.17 | Sensor located at the delivering and controls the feeding |
3.18 | Conveyor releases to subsequent conveyor |
3.19 | With alternate conveying path |
3.2 | Including conveyor couple |
3.21 | On peripheral face of drum or belt |
3.23 | Including pneumatic conveyor |
3.24 | Including gripper couple |
4.01 | Separator and conveyor |
5 | Pneumatic separator |
6 | Continuous endless conveyor |
4.02 | Sensor located at the separator and controls the conveyor |
4.03 | Sensor located at the conveyor and controls the separator |
4.04 | Mechanically linked for simultaneous operation |
4.05 | Endless belt separator |
4.08 | Rotary separator |
4.11 | Reciprocating separator |
7 | Continuous endless conveyors |
8.1 | FEEDING |
9.01 | Multiple supplies |
9.02 | Sheet feeding from one supply controls feeding from another supply |
9.05 | Supply selection (e.g., sheet color) |
9.07 | Single separator acts on multiple supplies |
9.09 | Including manual supply |
9.1 | Including continuous web supply |
9.11 | Superposed supplies |
9.12 | Juxtaposed supplies |
9.13 | With convergence to single path |
10.01 | Separator and conveyor |
11 | Pneumatic separator |
16 | Buckling separator and endless conveyor |
10.02 | Sensor located at the separator and controls the conveyor |
10.03 | Sensor located at the conveyor and controls the separator |
10.04 | Mechanically linked for simultaneous operation |
10.05 | Selective drive (e.g., number of degree of rotation) |
10.06 | Endless belt separator |
10.09 | Rotary separator |
10.14 | Reciprocating separator |
18 | Separators |
18.1 | Magnetic or electrostatic |
18.3 | Surface-piercing element(s) |
19 | Buckling |
90 | Pneumatic |
91 | Plural, relatively-moving suction members |
92 | Laterally receding members (e.g., for tautening sheet laterally) |
93 | Including members for separating and members for forwarding sheet |
94 | Unidirectionally-moving suction member or surface |
97 | Sheet removal by pressurized gas |
99 | Suction member acting on bottom of pack |
100 | Oscillating member bending margin of bottom sheet |
102 | Suction member reciprocating perpendicularly to sheet |
103 | Sheet-moving action of suction member results from engagement with sheet |
104 | With means to restrain feed of next sheet |
105 | Means effecting preliminary operation on sheets in pack |
107 | Oscillating suction member |
108 | Controlled by valve means |
30.1 | Pack advancer |
33 | Adhesive |
34 | Endless belt |
109 | Rotary |
37 | Preliminary protrusion |
110 | Control of separator responsive to sensing of sheet |
112 | Suction assisted |
113 | Separator rotating in plane of foremost sheet |
114 | Variably or intermittently driven |
117 | Separator adjustable or retractable relative to pack |
119 | Separator having non-uniform periphery |
121 | With means to restrain feed of next sheet |
122 | By restrainer having rearwardly moving surface |
123 | By restrainer acting on rear end of sheet |
124 | By adjustable restrainer |
126 | With means to urge pack toward separator |
42 | Reciprocating |
128 | With pack advancer |
131 | Bottom feed |
132 | Suction assisted |
133 | With means to prepare pack or bottom sheet for feeding |
136 | With means to skip or stop feed |
137 | With means to restrain feed of next sheet |
139 | By pusher reciprocating variably or non-rectilinearly |
141 | By pin (e.g., pointed) pusher |
142 | By adjustable (e.g., for sheet thickness) pusher |
143 | By self-aligning (e.g., yieldable) pushers |
144 | Holder adjustable to size of sheet |
225 | By means to change direction of sheet travel |
226 | With means to align sheet |
227 | Responsive to sheet-sensor |
229 | With means to retard sheet before alignment |
232 | Against aligner entering hole in sheet |
233 | Against rear-edge aligner |
234 | Against plural aligning assemblages |
235 | For incremental travel against successive front-edge aligners |
236 | For front and side alignment of sheet |
239 | Plural aligners selectively used |
240 | Oppositely-disposed side-edge aligners |
241 | By aligning a sheet-holder and its sheets |
242 | Against temporarily-stopped conveyer |
243 | Against front-edge aligner moved in direction of sheet travel |
245 | Against front-edge aligner interposed into sheet path |
248 | Against aligner adjacent side edge of sheet |
249 | By shifting aligner and gripper-couple laterally of sheet travel |
250 | By means to shift sheet laterally against aligner |
253 | With means to adjust position of aligner |
256 | With means to interrupt feeding |
258.01 | Responsive to sheet sensor |
259 | Plural sensors |
260 | Pneumatic sensors (e.g., to sense superposed sheets) |
261 | Laterally spaced sensors (e.g., to sense misalignment) |
262 | Excess-thickness sensor |
258.02 | Interrupts feeding upstream only |
258.03 | Single sensor with timer |
258.04 | Sensor operates warning indicator |
258.05 | Mechanical linkage |
257 | Manually controlled (e.g., for alternate-cycle feed) |
264 | By means to convey sheet (e.g., from pack to operation) |
265.01 | Responsive to sheet sensor |
266 | With intermittent movement of the sheet |
267 | On oscillating or reciprocating conveyor |
270 | With means to vary speed of conveyor sheet |
271 | By rear-edge pusher |
272 | Between superposed conveyor couple |
275 | On peripheral face of drum or belt |
145 | Pack holders |
146 | With means to vibrate pack |
147 | Advancer |
148 | With means to move portions of advancer unequally (e.g., for unequal-thickness sheets) |
149 | For on-edge or imbricated sheets |
152 | Control of advancer responsive to sensing of foremost sheet |
153 | Sensor included in feed mechanism |
154 | Sensor activates electric or fluidic circuit |
156 | Controlled pawl and ratchet actuates advancer |
157 | With means to replenish pack or retract advancer platform |
160 | Urged by spring or weight |
161 | With means to bow sheets |
162 | Holder movable relative to feed position |
165 | For feed from bottom of pack |
167 | With means to restrain feed of next sheet |
171 | Holder adjustable to size of sheet |
278 | DELIVERING |
279 | Multiple discharge |
280 | For separating sheet from moving assemblage of sheets |
281 | By separating member moving in direction opposite of assemblage |
282 | By sheet attracting means |
285 | With leading edges of sheets offset |
287 | Of successive sheets to plural receivers in succession |
288 | With control means to vary mode of operation |
291 | With selective actuation of means for inverting duplex sheets |
292 | With movable receivers or receiver portions |
293 | With means to increase spacing between receiver defining portions |
294 | Receivers moving into registry with delivery zone |
296 | By diverter or conveyor moving past receivers |
297 | By individual diverter for each receiver |
298 | With means to program discharge destination |
299 | To laterally spaced receivers |
300 | By release from conveyor at plural locations |
301 | Selectively to recirculating path or exit |
302 | By conveyor section movable to direct sheets along alternate paths |
303 | With movable diverter |
65 | Optional face or back |
67 | Endless conveyors to curtains |
69 | Endless conveyors to other conveyors |
72 | Rotary conveyors to flies |
73 | Curtains |
306 | With transfer means between conveyor and receiver |
307 | Means to strip sheets from engagement with moving conveyor |
308 | Stripper cyclically movable between stripping and nonstripping position |
309 | By air blast |
310 | By means to attract sheet from conveyor |
311 | Stripper normally in contact with conveyor surface |
312 | Stripper normally in spaced relation to conveyor surface |
175 | Means to drape sheets over horizontal bar |
176 | Responsive to delivered sheet |
177 | Means to push sheets out of edgewise into broadside movement (e.g., packer) |
182 | Means to retard sheets |
184 | Means to change orientation or direction of sheets during delivery |
188 | Means to bow sheets during delivery |
189 | Means temporarily interposed between conveyor and receiver |
193 | By electrostatic or magnetic conveyor |
194 | By pneumatic conveyor |
198 | By endless conveyor |
199 | Operation controlled by delivered sheet |
200 | With delivery end movably relative to pack receiver |
202 | With means to vary speed of sheets on conveyor(s) |
204 | Suspension gripper |
314 | Rotary conveyor |
84 | Reciprocating conveyors |
207 | To receiver for pack of sheets |
208 | With means to discharge static electricity |
209 | With means to bow sheets |
210 | With means to vibrate receiver |
211 | With air cushion between sheet and pack |
212 | For receiving sheets from below the pack |
213 | With movable sheet-surface support |
220 | With movable pack-limiting member(s) (e.g., hold-down) |
CROSS-REFERENCE ART COLLECTIONS | ||
900 | STRIPPER |
901 | MAGNETIC OPERATION |
902 | REVERSE DIRECTION OF SHEET MOVEMENT |
903 | TRAVELING WICKET (FOR STACK ON EDGE) |
FOREIGN ART COLLECTIONS | ||
FOR000 | CLASS-RELATED FOREIGN DOCUMENTS |
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