Patent US3700175A successfully refreshed from Google Patents.
US3700175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gap controlling device for a cone crusher
Assignee: Individual
•
Filing: 1970-08-05
•
Granted: 1972-10-24
•
Expires: 1990-08-05
Abstract
Abstract Apparatus is disclosed for controlling the outlet gap of a cone crusher, comprising a detecting core disposed within a main shaft of the cone crusher and a plurality of coils fixedly disposed with respect to the detecting core and forming therewith a differential transformer. A suitable electrical circuit is associated with the differential transformer to develop an electrical signal to be applied to a suitable measuring means such as a meter for providing an indication of the size of the outlet gap. In an illustrative embodiment of this invention, the measuring means is adapted to control the vertical movement of the main shaft of the cone crusher to adjust the outlet gap, thus enabling minerals to be crushed to a predetermined size.
Inventors
- 👤 Hisatuna Saito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:58
CPC Classifications
B; B02; B02C; B02C2/00; B02C2/02; B02C2/04; B02C2/047; B02C2/06; B02C25/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
177 words
A device for controlling an outlet gap of a cone crusher which comprises a detecting core disposed in an opening formed within the top portion of a main shaft of the cone crusher and vertically displaceable according to the under-mentioned vertical movement of the main shaft; a stationary member which carries coils fixedly mounted in registry with said detecting core, said coils disposed within said opening to reduce the space required therefor, said detecting core and said stationary member, in combination, forming a differential transformer and adapted to detect the width of the outlet gap according to displacement of the detecting core and to convert the detected width to an electric signal selected from the group consisting of a voltage and a current to actuate measuring means for providing a manifestation of the width of the outlet gap; and a motor means adapted to effect vertical movement of the main shaft of the cone crusher according to indication of the meter, thereby to adjust the outlet gap, thus enabling minerals to be crushed in a predetermined size.
Claim 2
Independent Claim
177 words
A device for controlling an outlet gap of a cone crusher which comprises a detecting core disposed in an opening formed within the top portion of a main shaft of the cone crusher and vertically displaceable according to the under-mentioned vertical movement of the main shaft; a stationary member which carries coils fixedly mounted in registry with said detecting core, said coils disposed within said opening to reduce the space required therefor, said detecting core and said stationary member, in combination, forming a differential transformer and adapted to detect the width of the outlet gap according to displacement of the detecting core and to convert the detected width to an electric signal selected from the group consisting of a voltage and a current to actuate measuring means for providing a manifestation of the width of the outlet gap; and a motor means adapted to effect vertical movement of the main shaft of the cone crusher according to indication of the meter, thereby to adjust the outlet gap, thus enabling minerals to be crushed in a predetermined size.
Claim 3
Dependent Claim
29 words
A device as claimed in claim 1, wherein said measuring means is calibrated in a unit of m/m, thereby enabling the width of the gap to be directly read.
Claim 4
Dependent Claim
27 words
A device as claimed in claim 1, wherein said measuring means includes limit means for controlling said motor means to establish an outlet gap of predetermined range.
Claim 5
Dependent Claim
31 words
A device as claimed in claim 1, wherein said detecting core is disposed loosely within said opening of said main shaft to permit the free movement of said detecting core therein.
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) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |