(19)
(11) EP 0 338 613 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
25.07.1990 Bulletin 1990/30

(43) Date of publication A2:
25.10.1989 Bulletin 1989/43

(21) Application number: 89200894.7

(22) Date of filing: 10.04.1989
(51) International Patent Classification (IPC)4: B66B 5/04
(84) Designated Contracting States:
DE FR GB IT NL

(30) Priority: 22.04.1988 SE 8801506

(71) Applicant: ALIMAK AB
S-931 03 Skelleftea (SE)

(72) Inventor:
  • Johansson, Äke
    S-931 46 Skellefteä (SE)

(74) Representative: Delhage, Einar et al
Bergenstrahle & Lindvall AB Sankt Paulsgatan 1
116 47 Stockholm
116 47 Stockholm (SE)

   


(54) A catch apparatus for a rack lift


(57) Catch apparatus for a rack lift, with a tooth wheel (2) engaging the rack and unrotatably mounted on the shaft (4), which also carries two friction members (16,18), which are spring tensioned (28) towards each other for mutual friction engagement, and of which one (16) is unrotatably carried by the shaft (4), and the other one (18) is glidingly supported (20) on the shaft but normally co-rotating through the frictional engagement, an inertia blocking mechanism (38,74) being arranged to stop the other friction member (18) at exceeding of a limit velocity of the shaft (4), for braking the shaft through the frictional engagement. The blocking mechanism includes a blocking member (54) which is suspended (44,46) for pendulum movement in a plane extending trans- versely to the shaft (4) in order to be clamped, when the limit velocoty is exceeded, between a fixed abut- ment (74) and an abutment (42) carried by the other friction member (18).






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