US3945152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rail head re-form grinding machine
Assignee: Individual
•
Filing: 1975-03-05
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Granted: 1976-03-23
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Expires: 1995-03-05
Abstract
Abstract A rail head re-form grinding machine is provided with an annular grinding wheel whose lower flat face is adapted to engage and grind the rail head. A circular feeler device fits within the annular grinding wheel and is also engaged by the rail head. The feeler device is vertically movable by a hydraulic piston arrangement the movement of the feeler device being sensed and indicated by a sensing and indicating assembly. The housing which mounts the grinding wheel and feeler device is pivotally carried so that an arcuate surface may be ground on the rail head.
Inventors
- 👤 Heinrich Helgemeir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:41
CPC Classifications
E; E01; E01B; E01B31/00; E01B31/02; E01B31/12
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
96 words
Rail Head Re-Form Grinding Machine with rotating grinding wheel operating at the front end, through the center of which a feeler device is provided immediately within the grinding border of the grinding wheel and connected to an indicating device, marked by the feeler device being an even plate (12) filling out almost the clear width of the grinding wheel (6) and being affixed pivoting at an axially adjustable axle (13), furthermore by the feeler device being adjustable by means of pressure (18) and the adjusting distance which can be registrated via an indication device (22, 23).
Claim 2
Dependent Claim
96 words
Rail Head Re-Form Grinding Machine with rotating grinding wheel operating at the front end, through the center of which a feeler device is provided immediately within the grinding border of the grinding wheel and connected to an indicating device, marked by the feeler device being an even plate (12) filling out almost the clear width of the grinding wheel (6) and being affixed pivoting at an axially adjustable axle (13), furthermore by the feeler device being adjustable by means of pressure (18) and the adjusting distance which can be registrated via an indication device (22, 23).
Claim 3
Dependent Claim
20 words
A machine as per claim 1 characterized by pressure means for increasing or reducing the weight on the feeler device.
Claim 4
Dependent Claim
29 words
Machine as per claim 1, characterized by the grinding pressure being controlled by hand or automatically, shown via an indicating instrument for the current pick-up of the grinding motor.
Claim 5
Dependent Claim
36 words
Machine as per claim 1, characterized by the feeler device and the grinding wheel (6) being adjustable in a semi-cercle around the rail head (7) by means of a guiding housing (25) slewable in an angle.
Claim 6
Dependent Claim
48 words
Machine as per claim 1, characterized by the feeler device and the grinding wheel (6) being removed from and put on to the rail in a semi-cercle by means of cylinder piston group (4), in order to achieve thereby a free access for easy exchange of wearing parts.
Claim 7
Dependent Claim
108 words
A rail head re-form grinding machine adapted for grinding the rail head to the prescribed contour, comprising a housing, an annular grinding wheel rotatably carried by said housing, the grinding wheel having upper and lower flat faces with the lower face adapted to engage the rail head, power means to rotate said grinding wheel, a feeler disc rotatably carried within the annular grinding wheel and adapted to contact the rail head, means for supporting the feeler disc in an adjustable vertical manner, power and control means for vertically displacing the feeler disc, and sensing and indicating means for determining and showing the vertical movement of the feeler disc.
Claim 8
Dependent Claim
108 words
A rail head re-form grinding machine adapted for grinding the rail head to the prescribed contour, comprising a housing, an annular grinding wheel rotatably carried by said housing, the grinding wheel having upper and lower flat faces with the lower face adapted to engage the rail head, power means to rotate said grinding wheel, a feeler disc rotatably carried within the annular grinding wheel and adapted to contact the rail head, means for supporting the feeler disc in an adjustable vertical manner, power and control means for vertically displacing the feeler disc, and sensing and indicating means for determining and showing the vertical movement of the feeler disc.
Claim 9
Dependent Claim
38 words
The invention as set forth in claim 6 and wherein mounting means are provided for the housing whereby the housing and grinding wheel carried thereby may be arcuately moved to grind the rail head in the prescribed contour.
Claim 10
Dependent Claim
50 words
The invention as set forth in claim 7 and wherein hydraulic power means are provided for the housing which carries the grinding wheel and feeler disc and sensing means connected to the power means which rotate the grinding wheel to indicate the power being consumed to rotate the grinding wheel.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-23 | 1979-09-22 | 1980-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-23 | 1983-09-22 | 1984-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-23 | 1987-09-22 | 1988-03-23 | $7700.00 | Window Closed / Lapsed |