US3683510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plumb bob device
Assignee: Individual
•
Filing: 1970-10-29
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Granted: 1972-08-15
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Expires: 1990-10-29
Abstract
Abstract A plumb bob device suspended on a flexible member in a liquid in a closed container. The container is provided with a centrally positioned, upwardly pointed indicator means for aligning with the plumb bob to indicate a true vertical relationship, and a flexible member is connected to the top end of the closed container for suspending it from a fixed position. A flexible member is connected to the lower end of the container and extends downwardly for connection to a weight or the like so as to tether the closed container to accommodate only very limited movement thereof so that the plumb bob may accomplish its function.
Inventors
- 👤 Wilfred T Gros
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:00
CPC Classifications
G; G01; G01C; G01C15/00; G01C15/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
An alignment device comprising: a. a plumb bob member; b. a transparent, closed container surrounding said plumb bob member; c. flexible means for suspending said plumb bob member from one end of said container to hang within said container; d. a dampening liquid in said container in which said plumb bob is immersed for dampening movement thereof; e. upwardly pointed indicator means centrally positioned within said closed container at the other end thereof for alignment with said plumb bob to indicate a true vertical relationship of said plumb bob member; f. flexible means secured to said container at said one end for suspending said container from a fixed position; and g. flexible means secured to said other end of said container for securing said container in tethered position to inhibit movement thereof in a wind.
Claim 2
Dependent Claim
135 words
An alignment device comprising: a. a plumb bob member; b. a transparent, closed container surrounding said plumb bob member; c. flexible means for suspending said plumb bob member from one end of said container to hang within said container; d. a dampening liquid in said container in which said plumb bob is immersed for dampening movement thereof; e. upwardly pointed indicator means centrally positioned within said closed container at the other end thereof for alignment with said plumb bob to indicate a true vertical relationship of said plumb bob member; f. flexible means secured to said container at said one end for suspending said container from a fixed position; and g. flexible means secured to said other end of said container for securing said container in tethered position to inhibit movement thereof in a wind.
References Cited (Backward Citations)
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Cited
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Cited
US2113993A
Cited
US2571287A
Cited
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Cited
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Cited
US3521369A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |