US4531301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-way level
Assignee: Individual
•
Filing: 1984-07-09
•
Granted: 1985-07-30
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Expires: 2004-07-09
Abstract
Abstract A level for leveling in three dimensions such as leveling the top surface and corner edges of a wall. The level has a body that is L-shaped in cross section with two legs at right angles to one another. The legs are made of plate like members with equally spaced holes. Some of the holes have level vials in them. Each leg has a longitudinally extending rib. The vials are supported in rings fixed to the sides of the plate like legs. The rings could be fixed in position by set screws or other fastening means. The ribs are at least as thick as the rings so that they protect the rings and the vials supported in the rings.
Inventors
- 👤 Ralph Tau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:44
CPC Classifications
G; G01; G01C; G01C9/00; G01C9/18; G01C9/24; G01C9/26; G01C9/28
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
249 words
A level comprising a body having a first plate like leg and a second plate like leg integrally connected together at an apex and disposed at right angles to one another, said first leg having a first outwardly extending rib on its outside of its distal end and said second leg having a second outwardly extending rib on its outside of its distal end, said legs having a third rib attached to said legs on its outside of said apex, said first rib having a first outwardly directed first working surface, said first rib having a second outwardly directed working surface, said third rib having a third working surface and a fourth working surface, said third working surface and said fourth working surface being disposed at right angles to one another, said second working surface being coplanar with a first plane passing through said third working surface, said second working surface being coplanar with a second plane passing through said third working surface, a plurality of first generally equally spaced holes in said first plate like leg, a plurality of second generally equally spaced holes in said second plate like leg, a first level vial in said first leg in one of said spaced holes, a second level vial in said second leg in one of said spaced holes, and means supporting said level vials in said first leg and in said second leg, said legs and said ribs being of greater thickness than said means supporting said vial.
Claim 2
Dependent Claim
249 words
A level comprising a body having a first plate like leg and a second plate like leg integrally connected together at an apex and disposed at right angles to one another, said first leg having a first outwardly extending rib on its outside of its distal end and said second leg having a second outwardly extending rib on its outside of its distal end, said legs having a third rib attached to said legs on its outside of said apex, said first rib having a first outwardly directed first working surface, said first rib having a second outwardly directed working surface, said third rib having a third working surface and a fourth working surface, said third working surface and said fourth working surface being disposed at right angles to one another, said second working surface being coplanar with a first plane passing through said third working surface, said second working surface being coplanar with a second plane passing through said third working surface, a plurality of first generally equally spaced holes in said first plate like leg, a plurality of second generally equally spaced holes in said second plate like leg, a first level vial in said first leg in one of said spaced holes, a second level vial in said second leg in one of said spaced holes, and means supporting said level vials in said first leg and in said second leg, said legs and said ribs being of greater thickness than said means supporting said vial.
Claim 3
Dependent Claim
29 words
The level recited in claim 1 wherein said means supporting said vials comprise rings substantially the same diameter as said holes in said legs and fitting into said holes.
Claim 4
Dependent Claim
75 words
The level recited in claim 2 wherein said first leg has a fifth working surface on the side opposite said first working surface and said second leg has a sixth working surface on the side opposite said second working surface and some of said vial support means are disposed between said fifth working surface and said first plane and some of said vial supports are disposed between said sixth working surface and said second plane.
Claim 5
Dependent Claim
35 words
The level recited in claim 1 wherein said vial support means are each disposed in at least one said hole in said first leg and at least one vial support means in said second leg.
Claim 6
Dependent Claim
26 words
The level recited in claim 2 wherein said means supporting said vial in said ring comprises cement fixing the ends of said vials to said ring.
Claim 7
Dependent Claim
18 words
The level recited in claim 1 wherein at least one said vial is disposed in each said leg.
Claim 8
Dependent Claim
17 words
The level recited in claim 1 wherein at least two vials are supported in each said leg.
Claim 9
Dependent Claim
54 words
The level recited in claim 2 wherein some of said rings are disposed between said fifth working surface and a plane passing through said first working surface and said third working surface, other said rings are disposed between said sixth working surface and a plane passing through said second and said fourth working surface.
Claim 10
Dependent Claim
25 words
The level recited in claim 2 wherein said supporting means supporting said vial in said ring comprises a threaded set screw threadably engaging said body.
Claim 11
Dependent Claim
19 words
The level recited in claim 9 wherein at least one said level vial has marks thereon providing a protractor.
References Cited (Backward Citations)
US1683065A
Cited
US2466829A
Cited
US2633640A
Cited
US2752692A
Cited
US2906031A
Cited
US3303569A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-29 | 1989-01-28 | 1989-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-29 | 1993-01-28 | 1993-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-29 | 1997-01-28 | 1997-07-30 | $7700.00 | Window Closed / Lapsed |