US3923110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precision displacement measuring device for an electronic read-out platform scale
Assignee: Leonard Sa Ets
•
Filing: 1975-02-12
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Granted: 1975-12-02
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Expires: 1995-02-12
Abstract
Abstract A parallelogram linkage transmits the displacement of the weighing platform to a bridging arm from which the movable member of a precision displacement measuring device is suspended. This movable member is guided in a linear path in a fixed member in which adjustable screws are provided on each side of the movable member to reduce the play of the movable member in its linear path to a minimum, without introducing any appreciable amount of friction. The movable and fixed members each carry a grating and a photoelectric detector produces pulses in response to relative movement of the gratings which are counted and displayed electronically.
Inventors
- 👤 Dan Felice Dal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:07
CPC Classifications
G; G01; G01G; G01G3/00; G01G3/02; G01G21/00; G01G21/24; G01G23/00; G01G23/18; G01G23/36; G01G23/361; G01G23/37; G01G23/375; Y; Y10; Y10S; Y10S177/00; Y10S177/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A precision displacement measuring device as defined in claim 1 in which said suspension means is in the form of a flexible blade member having one edge fixed to said bridging arm and an edge opposite thereto fixed to said movAble member.
Claim 2
Dependent Claim
37 words
A precision displacement measuring device as defined in claim 2 in which said screw-adjustable means consist of three screw-adjustable devices mounted in said fixed member on each of a pair of opposite sides of said movable member.
References Cited (Backward Citations)
US3148742A
Cited
US3727708A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |