Safety device on a quill

Details Safety device on a quill Safety device on a quill

1986-12-12

1988-05-10

Martin, Jr., William D.

Geometrical instruments

Gauge

Movable contact probe, per se

G01B 728

Patent

active

047426217

ABSTRACT:
A safety device on a quill with a sensing head fixably connected thereto interrupts a positioning motion of the quill in case of a collision of the sensing head. For this purpose there is fastened to the quill a mounting plate 6, on which rests a bearing plate on at least three balls 20. The sensing head is fixable to the bearing plate. Several switches and switching cams assigned to them are offset relative to the balls on the bearing plate. In case of a collision of the sensing head, the bearing plate is deflected relative to the mounting plate, thereby causing at least one switch to interrupt the driving motion of the quill.

REFERENCES:
patent: 4270275 (1981-06-01), McMurtry
patent: 4279080 (1981-07-01), Nakaya
patent: 4679326 (1987-07-01), Takizawa et al.

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