US3628290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding machines
Assignee: Individual
•
Filing: 1970-06-09
•
Granted: 1971-12-21
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Expires: 1990-06-09
Abstract
Abstract A grinding spindle for supporting and transmitting drive to a rotary grinding wheel, the spindle comprising a head portion whereby the spindle can be secured to a grinding machine, a cylindrical portion extending from the head portion and there being provided within the cylindrical portion, a pair of bores which are inclined to each other and to the axis of the cylindrical portion. The bores contain shafts respectively and which are interconnected by the universal joint. The driven shaft projects from the cylindrical portion and mounts the grinding wheel.
Inventors
- 👤 William Albert John Wilson
- 👤 Hempstead Hemel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:32
CPC Classifications
B; B24; B24B; B24B41/00; B24B41/04; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/309352
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
196 words
A grinding spindle for supporting and transmitting drive to a rotary grinding wheel and comprising in combination, a head portion whereby the spindle can be secured to a grinding machine, a cylindrical portion extending from said head portion, a first bore extending within the cylindrical portion from the head portion, said first bore being inclined relative to the axis of said cylindrical portion, a second bore extending into said cylindrical portion form the free end thereof, the axis of said second bore being inclined in the opposite direction to the axis of the first bore, the axes of said bore intersecting at a position inwardly from the free end of the cylindrical portion and offset relative to the axis of the cylindrical portion, first and second shafts journaled in said first and second bores respectively, the adjacent ends of the shafts having universal joint connection whereby drive can be transmitted between the shafts, the free end portion of the second shaft projecting from the second bore and being adapted to receive a grinding wheel, and the free end of the first shaft being adapted to be driven by a driving member carried by the grinding machine.
Claim 2
Dependent Claim
196 words
A grinding spindle for supporting and transmitting drive to a rotary grinding wheel and comprising in combination, a head portion whereby the spindle can be secured to a grinding machine, a cylindrical portion extending from said head portion, a first bore extending within the cylindrical portion from the head portion, said first bore being inclined relative to the axis of said cylindrical portion, a second bore extending into said cylindrical portion form the free end thereof, the axis of said second bore being inclined in the opposite direction to the axis of the first bore, the axes of said bore intersecting at a position inwardly from the free end of the cylindrical portion and offset relative to the axis of the cylindrical portion, first and second shafts journaled in said first and second bores respectively, the adjacent ends of the shafts having universal joint connection whereby drive can be transmitted between the shafts, the free end portion of the second shaft projecting from the second bore and being adapted to receive a grinding wheel, and the free end of the first shaft being adapted to be driven by a driving member carried by the grinding machine.
Claim 3
Dependent Claim
29 words
A grinding spindle as claimed in claim 1 in which said second shaft is mounted by a pair of spaced combined journal and thrust bearings within said second bore.
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) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |