US3862500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plumb- or inclination-setting device
Assignee: Linde Sverige AB
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Filing: 1973-04-17
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Granted: 1975-01-28
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Expires: 1993-04-17
Abstract
Abstract A plumb- or inclination-setting device for an apparatus such as a driling machine, crane, platform or the like, having a member which is tiltable in relation to the horizontal plane, said member being regulated from an operating position located at a distance from the tiltable member, comprises a housing attachable to the tiltable member. In the housing there is a level illuminated by a lamp or mirror and a means for magnification and reproduction of the level, so that convenient viewing of the enlarged image of this with the naked eye is permitted from the operating position. The housing has an aiming device movable in relation to and fixable to the housing, which aiming device is arranged for such advance setting that when the image of the level bubble is centered in the level housing, the tiltable member adopts a predetermined direction in both the horizontal and the vertical plane.
Inventors
- 👤 Gustaf Hakan Oskar Wibom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:08
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/02; E21B47/022; E21B7/00; E21B7/02; E21B7/022; E21B7/025
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
122 words
A plumb or inclination-setting device for an apparatus comprising a member which is tiltable in a vertical plane such as a drilling machine, crane, platform or the like, the inclination of said tiltable member in relation to the horizontal plane being regulated from an operating position located at a distance from said tiltable member, characterized by a housing, means for mounting said housing upon said tiltable member so that said housing is rotatable about a first axis perpendicular to said vertical plane, a level carried by said housing, means for illuminating said level, and means for projecting a magnified image of said level so that said magnified image of said level may be viewed with the naked eye from the operating position.
Claim 2
Dependent Claim
122 words
A plumb or inclination-setting device for an apparatus comprising a member which is tiltable in a vertical plane such as a drilling machine, crane, platform or the like, the inclination of said tiltable member in relation to the horizontal plane being regulated from an operating position located at a distance from said tiltable member, characterized by a housing, means for mounting said housing upon said tiltable member so that said housing is rotatable about a first axis perpendicular to said vertical plane, a level carried by said housing, means for illuminating said level, and means for projecting a magnified image of said level so that said magnified image of said level may be viewed with the naked eye from the operating position.
Claim 3
Dependent Claim
30 words
A plumb- or inclination-setting device according to claim 1, characterized in that the housing is in the form of a plummet pendulously suspended from said means for mounting said housing.
Claim 4
Dependent Claim
28 words
A plumb or inclination-setting device according to claim 1, characterized in that said means for mounting said housing is movable along the longitudinal axis of the tiltable member.
Claim 5
Dependent Claim
36 words
A plumb- or inclination-setting device according to claim 1 characterized by a graduated scale on said housing for setting the horizontal angle of inclination of said housing in relation to said means for mounting said housing.
Claim 6
Dependent Claim
62 words
A plumb- or inclination-setting device according to claim 4, wherein said housing includes an upper and lower portion, said lower portion being rotatably attached to said upper portion to rotate about a second axis orthogonal to said first axis and further includes a second graduated scale for indicating rotation of said lower portion of said housing with respect to said upper portion.
Claim 7
Dependent Claim
17 words
A plumb- or inclination-setting device according to claim 1, including a compass for aiming said tiltable member.
Claim 8
Dependent Claim
52 words
A plumb- or inclination-setting device according to claim 1, characterized in that said means for projecting a magnified image of said level comprises at least one lens defining a single optical axis, a mirror inclined in relation to the optical axis of at least one of said lenses, and a focusing screen.
Claim 9
Dependent Claim
36 words
A plumb- or inclination-setting device according to claim 7, characterized in that the focussing screen is surrounded by a protective hood, so that viewing of the enlarged image of the level in sunny weather is facilitated.
Claim 10
Dependent Claim
19 words
A plumb- or inclination-setting device according to claim 7, characterized in that the focussing screen has a circular shape.
Claim 11
Dependent Claim
55 words
A plumb- or inclination-setting device according to claim 1, wherein said means for mounting said housing comprises an angle housing mounted on said tiltable member, and said device further includes aiming means for sighting on a fixed point on the horizon, and means rotatably mounting said aiming means for rotation with respect to said housing.
Claim 12
Dependent Claim
30 words
A plumb or inclination-setting device according to claim 10, characterized in that said aiming means comprise holding means including means for fixing said aiming means in relation to said housing.
Claim 13
Dependent Claim
25 words
A plumb- or inclination-setting device according to claim 11, including means for setting said housing in a fixed position with respect to said mounting means.
Claim 14
Dependent Claim
23 words
A plumb or inclination-setting device according to claim 1, including a motor for rotating said mounting means with respect to said tiltable member.
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) | 1978-01-27 | 1978-07-29 | 1979-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-27 | 1982-07-29 | 1983-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-27 | 1986-07-29 | 1987-01-28 | $7700.00 | Window Closed / Lapsed |