Measuring and testing – Hardness – By penetrator or indentor
Patent
1988-03-02
1990-02-13
Tokar, Michael J.
Measuring and testing
Hardness
By penetrator or indentor
G01N 342
Patent
active
048995789
ABSTRACT:
A driving device for a hardness measuring instrument of the type including a fixed structure (2,3,4,5,6) having a base on which a piece to be controlled is firmly resting, and a movable assembly (7,8,9,10) that is driven from a motor (6) during a measuring cycle in such a manner as to be initially brought nearer the piece to be controlled and subsequently subjected to a measuring load, wherein the device utilizes, between the motor (6) and the movable assembly (7,8,9,10), two coaxial screws (11,13) having equally running threads, one of which screws is a large-pitch screw (11) and the other one is a small-pitch screw (13), the two screws being driven from the motor (6) and being arranged so that during a measuring operation, first the large-pitch screw (11) acts to cause the movable assembly (7,8,9,10) to be rapidly moved towards the piece to be controlled and then the small-pitch screw (13) acts to cause said movable assembly to be brought nearer said piece by a slow powerful motion, the reverse procedure taking place for returning the instrument (10) to its starting position.
REFERENCES:
patent: 4094188 (1978-06-01), Bellouin et al.
Raevis Robert R.
Striker Michael J.
Tokar Michael J.
LandOfFree
Driving device for a hardness measuring instrument does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Driving device for a hardness measuring instrument, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Driving device for a hardness measuring instrument will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1159874