US3684200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding apparatus
Assignee: Individual
•
Filing: 1969-12-12
•
Granted: 1972-08-15
•
Expires: 1989-12-12
Abstract
Abstract Grinding apparatus with grinding discs in opposed relationship and forming between themselves a grinding space, one of the grinding discs being constituted of two concentrically arranged annular holder members for disc grinding elements, the inner one of which is axially adjustable relative to the outer one so as to compensate for the non-uniform wear on the grinding surfaces of the disc elements.
Inventors
- 👤 Rolf Bertil Reinhall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:22
CPC Classifications
B; B02; B02C; B02C7/00; B02C7/11; B02C7/14
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
237 words
A grinding apparatus comprising a housing, a pair of grinding discs arranged within said housing and having grinding surfaces thereof confronting one another, one of said discs being stationary and composed of a plurality of concentrically arranged annular holder members for grinding disc elements, each composed of segments, the radially outer one of said holder members being rigidly fixed within the housing; the radially inner one of said holder members being mounted on the inner end of a rotatable shaft extending into said housing; said stationary and rotatable discs forming a grinding space therebetween for vegetable or similar produce to be disintegrated by defibration and refining of the same, said annular holder members having their confronting circumfeRential surfaces formed with inter-engaging threads extending radially outward of said circumferential surfaces; and means actuable externally of the housing for adjusting the axial position of the radially inner one of said concentrically arranged annular holder members relative to said radially outer one thereof, said threads permitting said axial adjustment to be made by an unpredetermined increment by means of said interengaging threads, the axial position of the inner one of said concentrically arranged annular holder members relative to the fixed position of the concentric outer one of said holder members to compensate for the greater wear upon said inner grinding disc elements while maintaining the outer disc elements of said stationary grinding disc firmly anchored to said stationary holder member.
Claim 2
Dependent Claim
237 words
A grinding apparatus comprising a housing, a pair of grinding discs arranged within said housing and having grinding surfaces thereof confronting one another, one of said discs being stationary and composed of a plurality of concentrically arranged annular holder members for grinding disc elements, each composed of segments, the radially outer one of said holder members being rigidly fixed within the housing; the radially inner one of said holder members being mounted on the inner end of a rotatable shaft extending into said housing; said stationary and rotatable discs forming a grinding space therebetween for vegetable or similar produce to be disintegrated by defibration and refining of the same, said annular holder members having their confronting circumfeRential surfaces formed with inter-engaging threads extending radially outward of said circumferential surfaces; and means actuable externally of the housing for adjusting the axial position of the radially inner one of said concentrically arranged annular holder members relative to said radially outer one thereof, said threads permitting said axial adjustment to be made by an unpredetermined increment by means of said interengaging threads, the axial position of the inner one of said concentrically arranged annular holder members relative to the fixed position of the concentric outer one of said holder members to compensate for the greater wear upon said inner grinding disc elements while maintaining the outer disc elements of said stationary grinding disc firmly anchored to said stationary holder member.
Claim 3
Dependent Claim
44 words
A grinding apparatus as defined in claim 1, wherein a supply conduit for lubricant extends through the wall of said housing and opens into the joint between threads on said outer stationary holder member and the threads on the inner axially adjustable holder member.
Claim 4
Dependent Claim
200 words
A grinding apparatus comprising a housing, a pair of grinding discs arranged within said housing and having the grinding surfaces thereof confronting one another, one of said discs being stationary and composed of a plurality of concentrically arranged annular holder members for grinding disc elements, each composed of segments, the radially outward one of said holder members being rigidly fixed within the housing; the radially inner one of said holder members being mounted on the inner end of a rotatable shaft extending into said housing; said stationary and rotatable discs forming a grinding space there-between for vegetable or similar produce to be disintegrated by defibration and refining of the same, and means actuable externally of the housing for adjusting the axial position of the radially inner one of said concentrically arranged annular holder members relative to said radially outer one thereof to compensate for the greater wear upon said inner grinding disc elements while maintaining the outer disc elements of said stationary grinding disc firmly anchored to said stationary holder member, said externally actuable adjusting means comprising a servomotor consisting essentially of a housing having a piston connected through conduits and a pilot valve to a source of pressure fluid.
Claim 5
Dependent Claim
200 words
A grinding apparatus comprising a housing, a pair of grinding discs arranged within said housing and having the grinding surfaces thereof confronting one another, one of said discs being stationary and composed of a plurality of concentrically arranged annular holder members for grinding disc elements, each composed of segments, the radially outward one of said holder members being rigidly fixed within the housing; the radially inner one of said holder members being mounted on the inner end of a rotatable shaft extending into said housing; said stationary and rotatable discs forming a grinding space there-between for vegetable or similar produce to be disintegrated by defibration and refining of the same, and means actuable externally of the housing for adjusting the axial position of the radially inner one of said concentrically arranged annular holder members relative to said radially outer one thereof to compensate for the greater wear upon said inner grinding disc elements while maintaining the outer disc elements of said stationary grinding disc firmly anchored to said stationary holder member, said externally actuable adjusting means comprising a servomotor consisting essentially of a housing having a piston connected through conduits and a pilot valve to a source of pressure fluid.
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) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |