US3716015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Measuring devices
Assignee: Individual
•
Filing: 1970-11-12
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Granted: 1973-02-13
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Expires: 1990-11-12
Abstract
Abstract A measuring device adapted to indicate a measurement value in two different scales, e.g. a metric length scale and a British length scale, said device comprising two elements relatively movable, each of which carries a scale and a datum mark for the scale of the other element, in order to indicate therein a measurement value corresponding to a relative shifting motion of said elements, said scales extending in opposite directions to each other at the adjacent surfaces of said elements.
Inventors
- 👤 P Godfrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:25
CPC Classifications
G; G01; G01B; G01B3/00; G01B3/002; G01B3/004; G01B3/006; Y; Y10; Y10S; Y10S116/00; Y10S116/47
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
118 words
A measuring device comprising two relatively movable elements, one of which has or carries a first calibrated scale and the other of which has or carries a datum mark for said first scale, said datum mark indicating a measurement value on said first scale corresponding to a relative shifting motion of said elements, said other element having or carrying a second scale calibrated in units different from the units of said first scale and extending in a direction opposite to that of said first scale, said one element further carrying a datum mark for said second scale which indicates on said second scale in different units a measurement value corresponding to the relative shifting motion of said elements.
Claim 2
Dependent Claim
118 words
A measuring device comprising two relatively movable elements, one of which has or carries a first calibrated scale and the other of which has or carries a datum mark for said first scale, said datum mark indicating a measurement value on said first scale corresponding to a relative shifting motion of said elements, said other element having or carrying a second scale calibrated in units different from the units of said first scale and extending in a direction opposite to that of said first scale, said one element further carrying a datum mark for said second scale which indicates on said second scale in different units a measurement value corresponding to the relative shifting motion of said elements.
Claim 3
Dependent Claim
118 words
A measuring device comprising two relatively movable elements, one of which has or carries a first calibrated scale and the other of which has or carries a datum mark for said first scale, said datum mark indicating a measurement value on said first scale corresponding to a relative shifting motion of said elements, said other element having or carrying a second scale calibrated in units different from the units of said first scale and extending in a direction opposite to that of said first scale, said one element further carrying a datum mark for said second scale which indicates on said second scale in different units a measurement value corresponding to the relative shifting motion of said elements.
Claim 4
Dependent Claim
118 words
A measuring device comprising two relatively movable elements, one of which has or carries a first calibrated scale and the other of which has or carries a datum mark for said first scale, said datum mark indicating a measurement value on said first scale corresponding to a relative shifting motion of said elements, said other element having or carrying a second scale calibrated in units different from the units of said first scale and extending in a direction opposite to that of said first scale, said one element further carrying a datum mark for said second scale which indicates on said second scale in different units a measurement value corresponding to the relative shifting motion of said elements.
Claim 5
Dependent Claim
23 words
A measuring device according to claim 1, wherein said scales and said datum marks are at the adjacent edge regions of said elements.
Claim 6
Dependent Claim
23 words
A measuring device according to claim 1, wherein at least one of said datum marks is in the form of a vernier scale.
Claim 7
Dependent Claim
29 words
A measuring device according to claim 1 wherein said first scale is a Metric length scale and said second scale is a second scale is a British length scale.
Claim 8
Dependent Claim
21 words
A measuring device according to claim 1 wherein each of said datum marks is in the form of a vernier scale.
Claim 9
Dependent Claim
34 words
A measuring device according to claim 1, wherein said elements are in the form of co-axially arranged wheels, respectively a rotary scale wheel and a stationary scale wheel, one of which surrounds the other.
Claim 10
Dependent Claim
74 words
A measuring device according to claim 6 in combination with a longitudinal bar which is relatively movable with reference to said scale wheels and has or carries two parallel scales respectively in units corresponding to said units of said rotary and stationary wheels, or multiple of said units, said rotary scale wheel being arranged to control the movement of a register mark across a screen wherein a region of said longitudinal bar is displayed.
Claim 11
Dependent Claim
50 words
A measuring device according to claim 7 wherein said device is mounted on a machine tool and wherein said longitudinal bar is attached to a longitudinally movable part of said machine tool and said rotary and stationary wheels and screen are mounted on a stationary part of said machine tool.
References Cited (Backward Citations)
US1027549A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |