Patent US4813149A successfully refreshed from Google Patents.
US4813149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Level device
Assignee: Individual
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Filing: 1987-12-01
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Granted: 1989-03-21
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Expires: 2007-12-01
Abstract
Abstract A level device has an extendable body portion with a pair of pivotally mounted extendable swingers. The swingers may be adjusted to swing freely, or be locked at any desired angular position. A protractor scale on the pivot mount of each swinger provides an indication of the angle of the swinger with respect to the main body portion. A spirit level is also provided on the pivot mount of each of the swingers to allow the body portion to be held in a horizontal level position. The device is useful for hanging pictures on walls, locating shelves, drawing designs on walls and measuring operations.
Inventors
- 👤 Robert D. Herkimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:52
CPC Classifications
B; B25; B25H; B25H7/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
160 words
A new and improved level device, comprising: elongated base means; elongated swinger means pivotally mounted at opposite ends of said elongated base means; pivot mount means at opposite ends of said base means for selectively mounting said swinger means for free swinging movement or for securing said swinger means at a selected angular position; protractor scale means on each of said pivot mount means; reference mark means on each of said swinger means for cooperation with said protractor scale means; measuring scale means on said base means and each of said swinger means; said elongated base having a left hand base portion and a right hand base portion connected by a base extension; said base extension slidably received within longitudinal slots centrally disposed in said left and right hand base portions; and an arcuate projection formed on one end of said left hand base portion and a cooperating arcuate recess formed on one end of said right hand base portion.
Claim 2
Dependent Claim
160 words
A new and improved level device, comprising: elongated base means; elongated swinger means pivotally mounted at opposite ends of said elongated base means; pivot mount means at opposite ends of said base means for selectively mounting said swinger means for free swinging movement or for securing said swinger means at a selected angular position; protractor scale means on each of said pivot mount means; reference mark means on each of said swinger means for cooperation with said protractor scale means; measuring scale means on said base means and each of said swinger means; said elongated base having a left hand base portion and a right hand base portion connected by a base extension; said base extension slidably received within longitudinal slots centrally disposed in said left and right hand base portions; and an arcuate projection formed on one end of said left hand base portion and a cooperating arcuate recess formed on one end of said right hand base portion.
Claim 3
Dependent Claim
22 words
The level device of claim 1, further comprising spirit level means on a top surface of each of said pivot mount means.
Claim 4
Dependent Claim
35 words
The level device of claim 1, wherein each of said pivot mount means has a circular annular rib for engagement with a circular groove on a lock collar provided on each of said swinger means.
Claim 5
Dependent Claim
180 words
A new and improved level device, comprising: an elongated base; said base having a left hand portion and a right hand portion; a base extension slidably received in longitudinal slots centrally disposed in said left and right hand base portions; a pair of upstanding generally cylindrical pivot mounts secured to opposite ends of said base; a spirit level and a protractor scale provided on a top surface of each of said pivot mounts; a circular annular rib around each of said pivot mounts; a pair of elongated swingers pivotally mounted on said pivot mounts; each of said swingers having a circular aperture received around one of said pivot mounts; a rubber lock collar on each of said swingers surrounding said aperture and having a circular groove for receiving said circular annular rib on said pivot mount; said swinger lock collars movable between a freely swingable position and a lock position; a pair of swinger extensions received in central longitudinal slots in said swingers; a measuring scale on each of said base, said base extension, said swingers and said swinger extensions.
Claim 6
Dependent Claim
180 words
A new and improved level device, comprising: an elongated base; said base having a left hand portion and a right hand portion; a base extension slidably received in longitudinal slots centrally disposed in said left and right hand base portions; a pair of upstanding generally cylindrical pivot mounts secured to opposite ends of said base; a spirit level and a protractor scale provided on a top surface of each of said pivot mounts; a circular annular rib around each of said pivot mounts; a pair of elongated swingers pivotally mounted on said pivot mounts; each of said swingers having a circular aperture received around one of said pivot mounts; a rubber lock collar on each of said swingers surrounding said aperture and having a circular groove for receiving said circular annular rib on said pivot mount; said swinger lock collars movable between a freely swingable position and a lock position; a pair of swinger extensions received in central longitudinal slots in said swingers; a measuring scale on each of said base, said base extension, said swingers and said swinger extensions.
Claim 7
Dependent Claim
152 words
A new and improved level device, comprising: elongated base means; elongated swinger means pivotally mounted at opposite ends of said elongated base means; pivot mount means at opposite ends of said base means for selectively mounting said swinger means for free swinging movement or for securing said swinger means at a selected angular position; protractor scale means on each of said pivot mount means; reference mark means on each of said swinger means for cooperation with said protractor scale means; measuring scale means on said base means and each of said swinger means; swinger extension means on each of said swinger means; said swinger extension means comprising an elongated swinger extension slidably received within a centrally disposed longitudinal slot in each of said swinger means; and each of said elongated swinger extensions having an upstanding arcuate projection for cooperation with an arcuate recess formed at one end of each of swinger means.
Claim 8
Dependent Claim
152 words
A new and improved level device, comprising: elongated base means; elongated swinger means pivotally mounted at opposite ends of said elongated base means; pivot mount means at opposite ends of said base means for selectively mounting said swinger means for free swinging movement or for securing said swinger means at a selected angular position; protractor scale means on each of said pivot mount means; reference mark means on each of said swinger means for cooperation with said protractor scale means; measuring scale means on said base means and each of said swinger means; swinger extension means on each of said swinger means; said swinger extension means comprising an elongated swinger extension slidably received within a centrally disposed longitudinal slot in each of said swinger means; and each of said elongated swinger extensions having an upstanding arcuate projection for cooperation with an arcuate recess formed at one end of each of swinger means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-20 | 1992-09-19 | 1993-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-20 | 1996-09-19 | 1997-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-20 | 2000-09-19 | 2001-03-21 | $7700.00 | Window Closed / Lapsed |