PFLOW INDUSTRIES, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B65G TRANSPORT OR STORAGE DEVICES, e.g. CONVEYERS FOR LOADING OR TIPPING; SHOP CONVEYER SYSTEMS; PNEUMATIC TUBE CONVEYERS 562
 
  
 
B66B ELEVATORS; ESCALATORS OR MOVING WALKWAYS 523
 
  
 
B60S SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR133
 
  
 
B61B RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR 117
 
  
 
G08B SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS 193

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9598242 Moving floor systemJan 27, 15Mar 21, 17[B65G]
8789661 Visual warning barrier for door assembly used in a vertical lifting systemSep 28, 11Jul 29, 14[E06B, B66B]
8328003 Shopping cart conveyor with gate assemblyDec 23, 09Dec 11, 12[B65G]
8075237 Multi-level vehicle liftNov 12, 08Dec 13, 11[B65G]
7931136 Jam sensor for shopping cart conveyorMar 31, 08Apr 26, 11[B66B]
7779992 Shopping cart conveyor system with pivoting lugDec 20, 07Aug 24, 10[B65G]
7453358 Shopping cart conveyor with gated accessFeb 17, 06Nov 18, 08[G08B]
7131532 Belt attachment device and methodMay 24, 05Nov 07, 06[B65G]
6490979 Inclined shopping cart conveyor systemMay 01, 01Dec 10, 02[B61B]
5601157 DecklockApr 18, 95Feb 11, 97[B66B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2012/0279,806 OBSTRUCTION MONITORING METHOD AND SYSTEM FOR A VERTICAL RECIPROCATING CONVEYORAbandonedMay 04, 12Nov 08, 12[B66B]
2011/0014,017 STORAGE RETRIEVAL MACHINEAbandonedJul 14, 09Jan 20, 11[B65G, F16H]
2010/0111,653 VERTICAL LIFT WITH SYNCHRONIZERAbandonedNov 06, 08May 06, 10[B65G]
2008/0078,624 VERTICAL CONVEYOR WITH HYDRAULIC DRIVEAbandonedJul 27, 06Apr 03, 08[B66B]
6896125 Belt attachment device and methodExpiredApr 04, 03May 24, 05[B65G]
6644210 Shopping cart conveyor with front wheel alignment and turning systemExpiredJul 12, 02Nov 11, 03[B61B]
6394260 Conveyor system including roller-guided carriage assembliesExpiredJul 17, 00May 28, 02[B65G]
6360848 Safety system for a vertical reciprocating conveyorExpiredJun 23, 00Mar 26, 02[B66B]
5941347 Portable liftExpiredMay 27, 97Aug 24, 99[B66F]
5908088 Hydraulic drive mechanism for a vertical conveyorExpiredDec 27, 96Jun 01, 99[B66F]
4987992 Material transfer apparatusExpiredJan 09, 89Jan 29, 91[B65G]
4227463 Apparatus for removing and installing batteriesExpiredMar 27, 78Oct 14, 80[B60D]

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