Three-stage shaft coupling

Details Three-stage shaft coupling Three-stage shaft coupling

1995-02-03

1996-06-04

Sotelo, Jesus D.

Marine propulsion

Screw propeller

Shafting

1231922, B63H 2334

Patent

active

055227473

ABSTRACT:
A three-stage coupling has a driven input element and an output element adapted to be drive to a load and coaxial with the input element. The third stage has an annular input side and fixed to the input element, an annular output side adjacent and coaxial with the input side, and a relatively soft elastomeric ring secured between the input and output sides. The third stage defines a cavity on the axis and has ends defining axially spaced end planes perpendicular to the axis. The second stage is substantially received in the cavity between the planes and has an output side and fixed to the output element, an input side adjacent the second-stage output side and fixed to the third-stage output side, and a relatively hard and elastomeric body between the second-stage input and output sides. Interengageable formations between the second-stage input and output sides couple same together via the second-stage body only after the second-stage input and output sides have been relatively rotated through a predetermined angle. The first stage is substantially received in the cavity between the planes and has an output side and fixed to the output element, an input side adjacent and coaxial with the first-stage output side and fixed to the third-stage output side, and a relatively soft and elastomeric body between the first-stage input and output sides.

REFERENCES:
patent: 3399647 (1968-09-01), Alexander et al.
patent: 4929204 (1990-05-01), Shiozawa
patent: 4938723 (1990-07-01), Yoshimura et al.
patent: 5282444 (1994-02-01), Ito et al.

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