US3789512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plumb bob device with spool means for tethering lines
Assignee: Individual
•
Filing: 1972-02-07
•
Granted: 1974-02-05
•
Expires: 1992-02-07
Abstract
Abstract A plumb bob device is 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 spool means are provided adjacent each end of the container for receiving a flexible line so that the flexible line may be wound on each of the spool means when the plumb bob device is not in use, but may be unwound therefrom to secure the plumb bob device in position for use. The spools adjacent each end of the container include axially extending shafts with slot means whereby the flexible lines on the spool means may be positioned in the slots to properly position the plumb bob device during use.
Inventors
- 👤 W Gros
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:01
CPC Classifications
G; G01; G01C; G01C15/00; G01C15/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
156 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. spool means on said container adjacent one end thereof; g. flexible means wound on said spool for unwinding therefrom and suspending said container from a fixed position; h. additional spool means on said container adjacent the other end thereof, and i. flexible means wound on said additional spool for unwinding therefrom and securing said container in tethered position to inhibit movement thereof in a wind.
Claim 2
Dependent Claim
156 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. spool means on said container adjacent one end thereof; g. flexible means wound on said spool for unwinding therefrom and suspending said container from a fixed position; h. additional spool means on said container adjacent the other end thereof, and i. flexible means wound on said additional spool for unwinding therefrom and securing said container in tethered position to inhibit movement thereof in a wind.
Claim 3
Dependent Claim
129 words
The invention of claim 1 wherein each of said spool means include: a. spaced inner and outer flanges; b. a drum extending therebetween; c. an axial shaft projecting outwardly from each of said outer flanges; d. a first slot between the end of each of said shafts and said outermost flanges, said first slot extending approximately half-way through said shaft and at a right angle to the longitudinal axis of said shaft; and e. a second slot in each of said shafts extending from one end of each of said first slots axially of and to the center of the end of said shafts whereby the flexible line after being unwound from said spools may be secured in said first and second slots to extend axially from said container.
References Cited (Backward Citations)
US3056211A
Cited
US3683510A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |