;  US6741007-B2 -- US3912956-A   ;  US4286184-A   ;  US4433261-A   OKUMA TEKKOSHO KK (OKUM);  OKUMA TEKKOSHA KK (OKUM)   NASHIKI M,  HAMADA Y;  US4827170-A   ISUZU MOTORS LTD (ISUZ)   KAWAMURA H,  TAMAI K;  US4894738-A   PAPST-MOTOREN KG (PAPN)   VAN DER HEIDE J,  ELSAESSER D;  US5004944-A   UNIQUE MOBILITY INC (UNIQ-Non-standard)   FISHER G A;  US5105114-A   GENERAL MOTORS CORP (GENK)   SICKLE R A V,  SMALL X L,  HEUER K P;  US5157295-A   CONNER PERIPHERALS INC (CONN-Non-standard)   STEFANSKY F M,  DNKLEY J;  US5247410-A   HITACHI LTD (HITA)   EBIHARA S,  MATSUMOTO M,  MORI K,  NARUSE J,  TAKAHASHI T;  US5252873-A   ;  US5333079-A   ;  US5446610-A   PAPST-MOTOREN KG (PAPN)   VAN DER HEIDE J,  ELSAESSER D;  US5557487-A   PAPST-MOTOREN KG (PAPN)   VAN DER HEIDE J,  ELSAESSER D;  US5667309-A   SANKYO SEIKI MFG CO LTD (DNSA)   NOSE T;  US5774302-A   PAPST-MOTOREN KG (PAPN)   VAN DER HEIDE J,  ELSAESSER D;  US5801900-A   PAPST-MOTOREN KG (PAPN)   VAN DER HEIDE J,  ELSAESSER D;  US5808392-A   TOSHIBA KK (TOKE)   SAKAI K,  TABUCHI Y;  US5862686-A   BOSCH-SIEMENS HAUSGERAETE GMBH (BSHB)   SKRIPPEK J;  US6018438-A   ;  US6130494-A   SULZER ELECTRONICS AG (SULZ);  LUST ANTRIEBSTECHNIK GMBH (LUST-Non-standard)   SCHOEB R;  US6147427-A   KONINK PHILIPS ELECTRONICS NV (PHIG);  PHILIPS PATENTVERWALTUNG GMBH (PHIG)   ACKERMANN B,  HOUKES M;  US20010005296-A1   ;  US20020047387-A1   ;  US6211595-B1   SANKYO SEIKI MFG CO LTD (DNSA)   NOSE T;  US6219199-B1   MATSUSHITA DENKI SANGYO KK (MATU)   SAKURAGI K,  SAEKI Y;  US6242826-B1   MATSUSHITA DENKI SANGYO KK (MATU)   SAITOU F,  SHIMOGAKI Y,  HIGUCHI A;  US6274955-B1   MATSUSHITA ELECTRIC IND CO LTD (MATU)   SATOH N,  HIRAI K;  US6320288-B1   MINEBEA KK (MINW)   SUZUKI Y,  FUJITANI S,  OHYASHIKI T,  MAKINO K;  US6359363-B1   BOSCH GMBH ROBERT (BOSC)   FOERSTERA J,  NITZSCHE H,  MERSCHROTH B,  PRAHL D,  HERMANN M;  US6369483-B1   HILL W (HILL-Individual)   HILL W;  US6301074-B2   MATSUSHITA DENKI SANGYO KK (MATU)   SAKURAGI K,  SAEKI Y;  US6404586-B2   MATSUSHITA DENKI SANGYO KK (MATU)   SAKURAGI K,  SAEKI Y;  WO1996042132-A1