Coupling member for coupling an optical system to an endoscope s

Details Coupling member for coupling an optical system to an endoscope s Coupling member for coupling an optical system to an endoscope s

1981-11-30

1984-06-05

Shedd, Wayne L.

Joints and connections

Interfitted members

Lugged member, rotary engagement

403327, 403329, B25G 316, F16B 720, F16D 100

Patent

active

044525460

ABSTRACT:
This invention relates to coupling members for coupling an optical system to an endoscope shaft, of the kind comprising a locking ring whose proximal terminal surface has an excision through which may pass an annular collar of the optical system insertible into the shaft, and having a radial guiding stud which is engagable in a groove or slot of the shaft provided with an inclination and which, by twisting out of the insertion position of the optical system, couples the optical system to the shaft in the manner of a bayonet joint. According to this invention, the locking ring has an internal annular groove arranged to receive a spring bent into a circular or partially circular shape and bearing against the bottom of the groove. One end of the spring is connected to the locking ring and the other end of the spring is connected to the shaft. When the annular collar is inserted in the locking ring, the spring is reduced in circumference and is stressed by rotation of the locking ring. The spring may have an undulant outline or be formed as a leaf spring.

REFERENCES:
patent: 3493253 (1970-02-01), Deplante
patent: 3858910 (1975-01-01), Oetiker
patent: 3874803 (1975-04-01), Svensson
patent: 4305386 (1981-12-01), Tawara

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