Patent search ap:("BASF AG") AND inv:"BECKER I KLAUS ING GRAD" Page 1

1.

发明专利
Automatic colorimetric titration - using light emitting diodes of different wavelengths with receptor cell to detect colour change w.r.t. reagent addition 未知

公开(公告)号：DE2728951A1

公开(公告)日：1979-01-18

申请号：DE2728951

申请日：1977-06-27

Applicant: BASF AG

Inventor： HORN DIETER DIPL CHEM DR , BECKER I KLAUS ING GRAD

IPC: G01N21/25 , G01N21/24 , G01N31/16

Abstract: Automatic colorimetric titrator uses >=1 light source to irradiate the liquid being titrated. Behing the vessel contg. the sample is a light sensitive cell which emits a signal to control the input of reagent proportional to the light being transmitted by the liquid. Light emitting diodes are used emitting light in the wavelength bands 150 - 3500 (500 - 1500) nm. These are actuated by impulses in a frequency range between 0.1-100 (1-5)K esp. 1 to 5 kHz, and alternately transmit a beam through the sample. The frequencies selected correspond to the colours of the sample before and after the colour change. The detector cell generates an a.c. potential signal on the colour change. Laser diodes can be used. Used for carrying out the automatic titration of solns. and permits the use of any convenient vessel with the need for additional manipulation.

2.

发明专利
Magnetic tape cassette prodn. machine - has intermittent drive multistation assembly turntable with clamps pivoting back and forth 未知

公开(公告)号：DE2558518A1

公开(公告)日：1977-07-07

申请号：DE2558518

申请日：1975-12-24

Applicant: BASF AG

Inventor： BECKER I KLAUS ING GRAD , KOOB HUBERT ING GRAD , WOELLHAF JOSEF , WALCHER KURT , WENDT ERICH ING GRAD

IPC: G11B23/113 , G11B23/00

Abstract: A coiling machine for the prodn of magnetic tape cassettes includes the attachment of the end of the tape to the spool core. A production line with intermittent progress uses a working table (1). It has a turntable (2) with guides (3) for the temporary location of work carriers (4) with a reciprocating drive (10). Adjacent to the worktable are clamping devices (5) pivoting back and forth about vertical axes to clamp the leader tapes to the cores (13) held in the holders (4). Clamping wire is fed from a stock spool and cut by reciprocating cutters. A magnetic tape stock spool (11) on a rotating disc (10) feeds tape past diversion rollers (14) and adjusting elements (15) for the tape tention. Drives for the various units are located below the turntable.

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