Patent US4596846A successfully refreshed from Google Patents.
Patent US3681582A successfully refreshed from Google Patents.
US3681582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic sizing device with linear scale
Assignee: Toyoda Koki KK
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Filing: 1970-11-03
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Granted: 1972-08-01
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Expires: 1990-11-03
Abstract
Abstract A sizing device having a reading head whose scale is moved linearly in accordance with relative displacement of a pair of measuring feelers simultaneously moved in opposite direction so as to be brought into diametric contact with a workpiece. Signals transmitted from the reading head are applied to a reversible counter which calculates the span between the feelers and whose count is compared by a comparator with a desired size stored in a register. The comparator generates a sizing signal at its output when the size of the span between the feelers accords with the desired size and this size is digitally indicated on an indicator.
Inventors
- 👤 Kanou Kimio
- 👤 Nakamura Keiichi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:03
CPC Classifications
B; B24; B24B; B24B49/00; B24B49/02; B24B49/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
233 words
A sizing device for measuring the diameter of a workpiece in a grinding machine, comprising, a sizing head, an actuator for moving said sizing head toward and away from the workpiece, a pair of feed rods slidably supported on said sizing head, feed means for moving said pair of feed rods simultaneously in opposite directions, a pair of measuring feelers secured to said feed rods respectively to be brought diametrically into contact with the workpiece so as to continuously measure the workpiece, a scale member mounted on one of said pair. of said feed rods parallel thereto and calibrated by a periodically alternating reference magnetization which generates a magnetic flux, a reading device mounted on the other said pair of feed rods and responsive to variations in said magnetic flux for detecting the relative displacement of said measuring feelers, counting means for counting the instant diameter size of the workpiece in response to signals transmitted by said reading device, an indicator connected to said counting means for digitally indicating the instant diameter size of said workpiece, a register for registering a desired size, and comparator means connected to said register and said counting means for comparing the instant diameter size of said workpiece with said desired size and generating a sizing signal when the size of said workpiece as read on the indicator accords with said desired size as registered in said register.
Claim 2
Dependent Claim
233 words
A sizing device for measuring the diameter of a workpiece in a grinding machine, comprising, a sizing head, an actuator for moving said sizing head toward and away from the workpiece, a pair of feed rods slidably supported on said sizing head, feed means for moving said pair of feed rods simultaneously in opposite directions, a pair of measuring feelers secured to said feed rods respectively to be brought diametrically into contact with the workpiece so as to continuously measure the workpiece, a scale member mounted on one of said pair. of said feed rods parallel thereto and calibrated by a periodically alternating reference magnetization which generates a magnetic flux, a reading device mounted on the other said pair of feed rods and responsive to variations in said magnetic flux for detecting the relative displacement of said measuring feelers, counting means for counting the instant diameter size of the workpiece in response to signals transmitted by said reading device, an indicator connected to said counting means for digitally indicating the instant diameter size of said workpiece, a register for registering a desired size, and comparator means connected to said register and said counting means for comparing the instant diameter size of said workpiece with said desired size and generating a sizing signal when the size of said workpiece as read on the indicator accords with said desired size as registered in said register.
Claim 3
Dependent Claim
96 words
The sizing device as claimed in claim 1, further comprising a stop mounted on one of said pair of feed rods, a detecting device actuated by said stop so as to produce a pre-set order when said measuring feelers are in a position near to their maximum distance apart prior to a following sizing operation, and a pre-setting device operative to set a predetermined size in said counting means when said pre-set order is applied thereto, whereby miscounts occuring in an earlier sizing operation are corrected and prevented from appearing or accumulating in following sizing operations.
Claim 4
Dependent Claim
129 words
The sizing device as claimed in claim 1, wherein a first carriage is secured to one of said pair of feed rods and having a downwardly directed extension thereon, and a second carriage is secured to the other of said pair of feed rods and having an upwardly directed extension thereon, said pair of measuring feelers including a lower feeler adjustably secured to said downwardly directed extension and an upper feeler adjustably secured to said upwardly directed extension, said upper and lower feelers being in a vertical plane passing centrally between said pair of feed rods to measure a span therebetween, said sizing head having jaws defining an open space therebetween for movably receiving said first and second carriages, and said reading device being coaxial with said scale member.
Claim 5
Dependent Claim
76 words
The sizing device as claimed in claim 3, further comprising a stop mounted on one of said pair of feed rods, a detecting device actuated by said stop so as to produce a preset order when said measuring feelers are in a position near to their maximum distance apart prior to a following sizing operation, and a pre-setting device operative to set a predetermined size in said counting means when said pre-set order is applied thereto.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |