Patent US4581689A successfully refreshed from Google Patents.
US4581689A
Expired / Lapsed
US
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Lamp
Assignee: J&D Oram Ltd
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Filing: 1984-03-29
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Granted: 1986-04-08
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Expires: 2004-03-29
Abstract
Abstract A lamp (5) is secured to the end (4) of a support arm for at least horizontal translational movement, and is pivotable about a vertical axis (10) for azimuth adjustment of the light beams (from lenses 82, 83). To facilitate such horizontal movement by means of a handle (15), the handle is disposed on or adjacent the vertical pivot axis (10). The lamp, which may also be pivotable by means of the handle (15) about a horizontal axis 11, is preferably located substantially entirely on one side of the vertical axis (11).
Inventors
- 👤 John A. Oram
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:15
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/14; F21V21/26; F21V21/30; F21W; F21W2131/00; F21W2131/20; F21W2131/202; F21W2131/205; Y; Y10; Y10S; Y10S362/00; Y10S362/804
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
98 words
An adjustable lamp comprising a lamp unit, a support, said lamp unit being mounted on said support, and said support providing a plurality of rotational degrees of freedom for said lamp unit about an equal plurality of axes, and a handle attached to said lamp unit asymmetrically, said unit being rotatable about one of the axes to alter the handedness of the lamp, and said lamp further comprising a clutch, said handle being connected to the lamp unit through said clutch, and said clutch, when released, allowing the handle to be rotationally adjusted relative to the lamp unit.
Claim 2
Dependent Claim
98 words
An adjustable lamp comprising a lamp unit, a support, said lamp unit being mounted on said support, and said support providing a plurality of rotational degrees of freedom for said lamp unit about an equal plurality of axes, and a handle attached to said lamp unit asymmetrically, said unit being rotatable about one of the axes to alter the handedness of the lamp, and said lamp further comprising a clutch, said handle being connected to the lamp unit through said clutch, and said clutch, when released, allowing the handle to be rotationally adjusted relative to the lamp unit.
Claim 3
Dependent Claim
23 words
A lamp according to claim 1, wherein the lamp unit is free to rotate about a substantially vertical and a substantially horizontal axis.
Claim 4
Dependent Claim
20 words
A lamp according to claim 2, wherein the support permits translational motion of the lamp unit in a horizontal plane.
Claim 5
Dependent Claim
17 words
A lamp according to claim 2, wherein the support permits vertical translational motion of the lamp unit.
Claim 6
Dependent Claim
34 words
A lamp according to claim 2, wherein the lamp can be reversed for operation by left- or right-handed operators by rotating the lamp unit through 180° about each axis and rotationally adjusting the handle.
Claim 7
Dependent Claim
16 words
A lamp according to claim 2, wherein the handle is located on or near both axes.
Claim 8
Dependent Claim
15 words
A lamp according to claim 2, wherein said horizontal axis passes through the lamp unit.
Claim 9
Dependent Claim
33 words
A lamp according to claim 7, wherein the lamp unit comprises means operable to generate two mutually convergent light beams, said beams leaving the lamp unit in a plane containing said horizontal axis.
Claim 10
Dependent Claim
20 words
A lamp according to claim 2, wherein the handle and lamp unit are located on opposite sides of the support.
Claim 11
Dependent Claim
21 words
A lamp according to claim 2, further comprising a control member mounted on the handle and operable to release the clutch.
Claim 12
Dependent Claim
48 words
A lamp according to claim 10, wherein the clutch comprises a serrated clutch surface fixed to the lamp unit, and the control member has integral teeth and is mounted on the handle to be movable to bring the teeth into and out of engagement with the clutch surface.
Claim 13
Dependent Claim
59 words
A lamp according to claim 11, further comprising a cup member, said cup member being fixed to said lamp unit and having a portion of circular section, said clutch surface being formed on the inner face of said circular section, and the control member being movable in a direction having a component along a radius of the circular section.
Claim 14
Dependent Claim
18 words
A lamp according to claim 2, wherein the handle is shaped to conform to a surrounding, gripping hand.
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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) | 1989-04-07 | 1989-10-07 | 1990-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-07 | 1993-10-07 | 1994-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-07 | 1997-10-07 | 1998-04-08 | $7700.00 | Window Closed / Lapsed |