US3826013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined level, square and plumb tool
Assignee: Individual
•
Filing: 1972-12-13
•
Granted: 1974-07-30
•
Expires: 1992-12-13
Abstract
Abstract A measuring instrument is disclosed to level, square and plumb adjacent and opposite surfaces of cylindrical, curved, inclined and planar shaped objects. A body member having right-angular arms with mutually perpendicular included-angle grooves for accommodating the contacted object surfaces being measured is an embodiment of the invention. Means to indicate the degree of level in the horizontal and vertical planes throughout 360* are provided in each arm and include liquid or ''''bulls-eye'''' target vials. Alternatively, a single level means may be utilized in either right-angular arm member.
Inventors
- 👤 B Baher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:32
CPC Classifications
G; G01; G01B; G01B3/00; G01B3/56; G01B3/566; G01C; G01C9/00; G01C9/18; G01C9/24
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
94 words
A tool comprising: a body member of a substantially rigid material having right angular arm portions each having a substantially flat surface; mutually perpendicular first and second object accommodating means comprising recessed grooves defining an included angle provided in the surface opposite said flat surface of one of said arm portions; and target type spirit level means for indicating the degree of displacement of an object engaged by said body member grooves throughout 360* with one positioning in a horizontal or vertical direction mounted in the flat surface of each of said arm portions.
Claim 2
Dependent Claim
94 words
A tool comprising: a body member of a substantially rigid material having right angular arm portions each having a substantially flat surface; mutually perpendicular first and second object accommodating means comprising recessed grooves defining an included angle provided in the surface opposite said flat surface of one of said arm portions; and target type spirit level means for indicating the degree of displacement of an object engaged by said body member grooves throughout 360* with one positioning in a horizontal or vertical direction mounted in the flat surface of each of said arm portions.
Claim 3
Dependent Claim
29 words
The tool according to claim 1 and means comprising slots in the sidewalls of said body member for accepting means for encircling and securing said tool to said object.
Claim 4
Dependent Claim
135 words
A combined level, square and plumb tool comprising: a body member of a substantially rigid material having right angular arm portions with substantially flat outer surfaces; first object accommodating means comprising an elongated recessed groove defining an included angle extending substantially throughout the length of the surface opposite said flat surface of one of said arm portions; second object accommodating means comprising a recessed groove defining an included angle extending mutually perpendicular to said first groove at an intermediate point and substantially across the width of said one of said arm portions; and target type liquid level means for indicating the degree of displacement of an object engaged by said body member grooves throughout 360* with one positioning in a horizontal or vertical direction mounted in the flat surface of each of said arm portions.
Claim 5
Dependent Claim
135 words
A combined level, square and plumb tool comprising: a body member of a substantially rigid material having right angular arm portions with substantially flat outer surfaces; first object accommodating means comprising an elongated recessed groove defining an included angle extending substantially throughout the length of the surface opposite said flat surface of one of said arm portions; second object accommodating means comprising a recessed groove defining an included angle extending mutually perpendicular to said first groove at an intermediate point and substantially across the width of said one of said arm portions; and target type liquid level means for indicating the degree of displacement of an object engaged by said body member grooves throughout 360* with one positioning in a horizontal or vertical direction mounted in the flat surface of each of said arm portions.
References Cited (Backward Citations)
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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) | 1977-07-29 | 1978-01-28 | 1978-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-29 | 1982-01-28 | 1982-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-29 | 1986-01-28 | 1986-07-30 | $7700.00 | Window Closed / Lapsed |