Connection tightness and swing angle adjustable pivot

Details Connection tightness and swing angle adjustable pivot Connection tightness and swing angle adjustable pivot

1999-02-17

2000-09-12

Browne, Lynne

Joints and connections

Articulated members

Pivoted

403 84, 403 8, 16342, 16376, 411 55, 411 602, F16C 1106

Patent

active

061168068

ABSTRACT:
A connection tightness and swing angle adjustable pivot includes a rotary shaft, a stationary shaft having a slit end rotatably received in an end of the rotary shaft, and an adjusting bolt. The adjusting bolt is screwed into the slit end of the stationary shaft with a head portion located in the rotary shaft but accessible with a hand tool via openings formed on the rotary shaft. The adjusting bolt has a tapered portion contacting with another tapered surface around inner wall of the stationary shaft. When the adjusting bolt is turned at the head portion via the openings on the rotary shaft so that it is screwed further into the stationary shaft, its tapered surface tightly presses against the tapered surface in the stationary shaft to expand the slit end of the stationary shaft, so that the stationary shaft more tightly contacts with inner wall of the rotary shaft. Moreover, the rotary shaft is provided at the end receiving the stationary shaft with a curved stopper that limits the rotary shaft to rotate relative to the stationary shaft within an angle defined by a radian of the curved stopper.

REFERENCES:
patent: 587938 (1897-08-01), Dawes
patent: 674528 (1901-05-01), Watson et al.
patent: 1569619 (1926-01-01), Cranzler
patent: 5503491 (1996-04-01), Lu
patent: 5774939 (1998-07-01), Lu

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