Patent US3744189A successfully refreshed from Google Patents.
US3744189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic adjusting apparatus for front cover of grinding wheel guard and coolant nozzle
Assignee: Toyoda Koki KK
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Filing: 1971-12-23
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Granted: 1973-07-10
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Expires: 1991-12-23
Abstract
Abstract A diameter of a grinding wheel is continuously being decreased by dressing operations performed thereon. Depending upon a decrease in the diameter of the grinding wheel, the position of a front cover of a grinding wheel guard and a coolant nozzle therefor, and the angle of the coolant nozzle for spraying are automatically adjusted by a link coupling mechanism pivoted to the front cover and to the coolant nozzle.
Inventors
- 👤 I Kakumu
- 👤 T Ito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:46
CPC Classifications
B; B24; B24B; B24B55/00; B24B55/04; B24B55/045
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
165 words
An automatic adjusting apparatus for a front cover of a grinding wheel guard and a coolant nozzle which comprises: means for pivotably supporting a front cover for a grinding wheel on the grinding wheel guard; a connecting bar pivoted to the grinding wheel guard at one end thereof; a link coupling mechanism for pivotably mounting a coolant nozzle on both the front cover and the other end of said connecting bar; a transmission cylinder responsively operable with a dressing device for said grinding wheel; ratchet means operable by the actuation of said transmission cylinder; a cam shaft drivingly connected to said ratchet means; a cam mounted on said cam shaft; and, resilient means for turning the front cover away from the periphery of said grinding wheel to cause the front cover to contact the cam, said cam being adapted to turn the front cover toward the periphery of the grinding wheel against the force of said resilient means upon the actuation of said transmission cylinder.
Claim 2
Dependent Claim
165 words
An automatic adjusting apparatus for a front cover of a grinding wheel guard and a coolant nozzle which comprises: means for pivotably supporting a front cover for a grinding wheel on the grinding wheel guard; a connecting bar pivoted to the grinding wheel guard at one end thereof; a link coupling mechanism for pivotably mounting a coolant nozzle on both the front cover and the other end of said connecting bar; a transmission cylinder responsively operable with a dressing device for said grinding wheel; ratchet means operable by the actuation of said transmission cylinder; a cam shaft drivingly connected to said ratchet means; a cam mounted on said cam shaft; and, resilient means for turning the front cover away from the periphery of said grinding wheel to cause the front cover to contact the cam, said cam being adapted to turn the front cover toward the periphery of the grinding wheel against the force of said resilient means upon the actuation of said transmission cylinder.
Claim 3
Dependent Claim
47 words
An automatic adjusting apparatus for a front cover of a grindiNg wheel guard and a coolant nozzle according to claim 1, further comprising: a handle shaft driven by said ratchet means through a one-way clutch for driving said cam shaft through a worm and a worm wheel.
Claim 4
Dependent Claim
32 words
An automatic adjusting apparatus for a front cover of a grinding wheel guard and a coolant nozzle according to claim 1, wherein said link coupling mechanism has four pivots constituting a parallelogram.
Claim 5
Dependent Claim
38 words
An automatic adjusting apparatus for a front cover of a grinding wheel guard and a coolant nozzle according to claim 1, further comprising: a buffer plate on the inner surface of said front cover of said grinding wheel.
Claim 6
Dependent Claim
56 words
An automatic adjusting apparatus for a front cover of a grinding wheel guard and a coolant nozzle according to claim 1, wherein: the position of the front cover and the coolant nozzle is adjusted by rotating the front cover through said cam; and, the angle of said coolant nozzle is adjusted by said link coupling mechanism.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |