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US 4,288,924 AGranted
Inside dimension measuring gauge
AssigneeKabushiki Kaisha Mitutoyo Seisakusho
InventorsIchiro Mizuno, Masao Nakahara
Life of this patent
Estimating the term…
Abstract
An inside dimension measuring gauge is disclosed having a spindle within a tubular body which actuates a plurality of contact pistons, the measurement being indicated by sensing the displacement of the spindle. A pair of opposed levers pivotally mounted to the tubular body are provided for axially displacing the spindle with respect to the tubular body upon manual application of a compressive force on the pair of levers. The pair of levers are connected to the axial spindle by a pair of movable links and are further provided with screws for regulating the permitted motion of the levers with respect to the tubular body.
Claims17
An inside dimension measuring gauge comprising:
- a tubular body;
- a spindle within said tubular body slidably movable in the axial direction of the tubular body;
- an indicating means fixed to the first end of the tubular body, the indicating means including a contact plunger touching an end of the spindle;
- a plurality of measuring contacts situated with respect to the tubular body to move with the spindle in a direction normal to the spindle;
- a pair of levers pivoted to said tubular body;
- and
- links connecting the levers to said spindle for inducing axial motion of the spindle in response to a compression or expansion of the levers, the links being pivotally connected to the levers and pivotally connected to said spindle.
4 more elements
An inside dimension measuring gauge comprising:
- a tubular body having first and second ends;
- a spindle situated within said tubular body slidably movable in the axial direction of the tubular body;
- an indicating means fixed to the first end of the tubular body, the indicating means including a contact plunger touching an end of the spindle;
- a head fixed to the second end of the tubular body comprising a plurality of circumferentially equally spaced cylinders;
- a plurality of contact pistons each positioned within one of said cylinders to follow the motion of said spindle but in a direction normal thereto;
- a pair of levers pivoted to said tubular body for manual manipulation of the measuring gauge;
- and
- a pair of links each pivotally connected to one of said levers and pivotally connected to said spindle such that the manual compression of said levers causes the axial displacement of said spindle and a corresponding radial displacement of said contact pistons.
5 more elements
An inside dimension measuring gauge comprising:
- a tubular body having first and second ends;
- a spindle situated within said tubular body slidably movable in the axial direction of the tubular body;
- an indicating means fixed to the first end of the tubular body, the indicating means including a contact plunger touching an end of the spindle;
- a head fixed to the second end of the tubular body comprising a plurality of circumferentially equally spaced cylinders;
- a plurality of contact pistons each positioned within one of said cylinders to follow the motion of said spindle but in a direction normal thereto;
- a pair of levers pivoted to said tubular body for manual manipulation of the measuring gauge, the levers being symetrically situated with respect to the axis of said spindle;
- screw means for adjusting the amount of free travel through which each lever is permitted to move;
- and
- a pair of links each connecting one of said levers to said spindle such that the manual compression of said levers causes the axial displacement of said spindle and a corresponding radial displacement of said contact pistons.
6 more elements
An inside dimension measuring gauge comprising:
- a tubular body having first and second ends;
- a spindle situated within said tubular body slidably movable in the axial direction of the tubular body;
- an indicating means fixed to the first end of the tubular body, the indicating means including a contact plunger touching an end of the spindle;
- a head fixed to the second end of the tubular body comprising a plurality of circumferentially equally spaced cylinders;
- a plurality of contact pistons each positioned within one of said cylinders to follow the motion of said spindle but in a direction normal thereto;
- a pair of levers pivoted to said tubular body for manual manipulation of the measuring gauge, the levers being symetrically situated with respect to the axis of said spindle;
- screw means for adjusting the amount of free travel through which each lever is permitted to move;
- and
- a pair of links each pivotally connected to one of said levers and pivotally connected to said spindle such that the manual compression of said levers causes the axial displacement of said spindle and a corresponding radial displacement of said contact pistons.
6 more elements
Dependencies are inferred from the claim text.