Patent US1237872A successfully refreshed from Google Patents.
Patent US3686768A successfully refreshed from Google Patents.
US3686768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-plane bore leveling device
Assignee: KWIK-WAY INDUSTRIES Inc A CORP OF IOWA
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Filing: 1971-06-30
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Granted: 1972-08-29
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Expires: 1991-06-30
Abstract
Abstract A two-plane bore leveling device for use in aligning bores in various structures, such as valve guides in automotive engines during reconditioning and/or salvage operations. The leveling device comprises a try square having a horizontal leg and a vertical leg. Two spirit level vials are positioned within the horizontal leg for top and side viewing. The vertical leg is provided with an interiorly hollow sleeve portion for receiving a shaft fitting within the bore to be aligned. Leveling is accomplished by inserting an appropriate shaft within the bore, sliding the sleeve portion of the leveling device onto the shaft and tilting the bore-containing structure to level in one plane. The horizontal leg of the leveling device is then rotated 90* on the shaft and the bore-containing structure is tilted to level in the other plane.
Inventors
- 👤 Marvin H Humbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:12
CPC Classifications
B; B23; B23Q; B23Q17/00; B23Q17/22
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
173 words
A two-plane bore leveling device for use in aligning bores, comprising in combination, a shaft having an upper portion of a given diameter and a lower portion of a diameter corresponding to an original diameter of the bore being aligned, a rigid unitary assembly comprised of a horizontal leg and a vertical leg, each leg having an outer longitudinal face surface parallel with an inner longitudinal face surface, said legs being joined to one another so that their respective longitudinal outer face surfaces are substantially perpendicular to each other, a spirit level means mounted for view within said horizontal leg for indicating alignment of said horizontal leg in horizontal planes, and a hollow sleeve member mounted on the inner longitudinal face surface of said vertical leg so as to have a centerline substantially parallel with the outer longitudinal face surface of the vertical leg and substantially perpendicular with the outer longitudinal face surface of the horizontal leg, said sleeve member having an inner diameter of a size snugly receiving said shaft upper portion.
Claim 2
Dependent Claim
173 words
A two-plane bore leveling device for use in aligning bores, comprising in combination, a shaft having an upper portion of a given diameter and a lower portion of a diameter corresponding to an original diameter of the bore being aligned, a rigid unitary assembly comprised of a horizontal leg and a vertical leg, each leg having an outer longitudinal face surface parallel with an inner longitudinal face surface, said legs being joined to one another so that their respective longitudinal outer face surfaces are substantially perpendicular to each other, a spirit level means mounted for view within said horizontal leg for indicating alignment of said horizontal leg in horizontal planes, and a hollow sleeve member mounted on the inner longitudinal face surface of said vertical leg so as to have a centerline substantially parallel with the outer longitudinal face surface of the vertical leg and substantially perpendicular with the outer longitudinal face surface of the horizontal leg, said sleeve member having an inner diameter of a size snugly receiving said shaft upper portion.
Claim 3
Dependent Claim
21 words
A two-plane bore leveling device as defined in claim 1 wherein the sleeve member is adhesively bonded to the vertical leg.
Claim 4
Dependent Claim
153 words
A two-plane leveling instrument for use in aligning a work pIece center line with a machine spindle centerline comprising, a unitary assembly having a horizontal leg and a vertical leg joined to one another, each leg having an outer longitudinal face surface parallel to an inner longitudinal face surface, said legs being joined to one another so that their respective longitudinal outer face surfaces are substantially perpendicular to each other, a spirit level means mounted for view within said horizontal leg for indicating alignment of said instrument in a horizontal plane, and a hollow sleeve member having a given inner diameter for mounting onto a workpiece, said sleeve member being mounted on the inner longitudinal face surface of said vertical leg so as to have a center line substantially parallel with the outer longitudinal face surface of said vertical leg and substantially perpendicular with the outer longitudinal face surface of the horizontal leg.
Claim 5
Dependent Claim
153 words
A two-plane leveling instrument for use in aligning a work pIece center line with a machine spindle centerline comprising, a unitary assembly having a horizontal leg and a vertical leg joined to one another, each leg having an outer longitudinal face surface parallel to an inner longitudinal face surface, said legs being joined to one another so that their respective longitudinal outer face surfaces are substantially perpendicular to each other, a spirit level means mounted for view within said horizontal leg for indicating alignment of said instrument in a horizontal plane, and a hollow sleeve member having a given inner diameter for mounting onto a workpiece, said sleeve member being mounted on the inner longitudinal face surface of said vertical leg so as to have a center line substantially parallel with the outer longitudinal face surface of said vertical leg and substantially perpendicular with the outer longitudinal face surface of the horizontal leg.
Claim 6
Dependent Claim
44 words
A two-plane leveling instrument as defined in claim 3 including a shaft having an upper portion with an outer diameter snugly fitting within the sleeve member and a lower portion of a diameter corresponding to an original diameter of a bore in a workpiece.
Claim 7
Dependent Claim
33 words
A two-plane bore leveling instrument as defined in claim 3 wherein the spirit level means comprises of at least two spirit level vials mounted in the horizontal leg for side and top viewing.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |