Global patent index - EP 0935718 A4

EP 0935718 A4 2001-03-14 - TRANSMISSION ASSEMBLY

Title (en)

TRANSMISSION ASSEMBLY

Title (de)

GETRIEBEEINHEIT

Title (fr)

ENSEMBLE DE TRANSMISSION

Publication

EP 0935718 A4 (EN)

Application

EP 97947354 A

Priority

  • US 9720101 W
  • US 73973996 A
  • US 73974096 A
  • US 73973896 A

Abstract (en)

[origin: WO9822301A2] The transmission assembly incorporates a mixer gearbox assembly, a system for centering and retaining a mixer shaft and drive and a seal. The mixer gearbox assembly is operable to drive a mixer shaft capable of receiving either a complete electric drive motor on a first face of the gearbox housing for operatively coupling with a first end of a long cross-shaft in the housing, or alternatively a partial electric drive motor on a second face of the gearbox housing (4) operating coupling with an opposite end of the cross-shaft. The system for automatically centering and rigidly retaining a mixer shaft in a mixer drive includes a hollow quill in a mixer drive which is provided with an axial bore having a first diameter along a central portion thereof and tapering linearly and axially in opposite directions away from the central portion with increasing diameter to define a pair of opposed conical portions of the axial bore on either side of the central bore. A smooth-surface cylindrical mixer shaft is inserted into the bore and is retained by the tightening of upper and lower tapered cylindrical locks which are slidable along the mixer shaft and which have conical outer surfaces which are matable with the upper and lower conical portions of the quill bore. The labyrinth shaft seal prevents the migration of fluids through a rotary joint, especially the migration of gear lubricant from a mixer drive assembly into a batch of process materials being mixed.

IPC 1-7 (main, further and additional classification)

F16H 57/02; B01F 15/00; B25G 3/20; E21B 33/00; F16H 1/20

IPC 8 full level (invention and additional information)

B01F 15/00 (2006.01); B25G 3/20 (2006.01); E21B 33/00 (2006.01); F16H 1/20 (2006.01); F16H 57/02 (2006.01)

IPC 8 main group level (invention and additional information)

B60K (2006.01)

CPC (invention and additional information)

F16H 1/203 (2013.01)

Citation (search report)

Designated contracting state (EPC)

BE DE FI FR GB IT NL SE

EPO simple patent family

WO 9822301 A2 19980528; WO 9822301 A3 19980709; CA 2271019 A1 19980528; CN 1244907 A 20000216; EP 0935718 A2 19990818; EP 0935718 A4 20010314

INPADOC legal status

2001-05-30 [18W] WITHDRAWN

- Ref Legal Event Code: 18W

- Date of withdrawal: 20010402

2001-03-14 [A4] SUPPLEMENTARY SEARCH REPORT

- Ref Legal Event Code: A4

- Effective date: 20010129

2001-03-14 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): BE DE FI FR GB IT NL SE

2001-03-14 [RIC1] CLASSIFICATION (CORRECTION)

- Ref Legal Event Code: RIC1

- Free Format Text: 7F 16H 57/02 A, 7B 25G 3/20 B, 7E 21B 33/00 B, 7B 01F 15/00 B, 7F 16H 1/20 B

1999-08-18 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19990531

1999-08-18 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): BE DE FI FR GB IT NL SE