Patent US4818980A successfully refreshed from Google Patents.
US4818980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Operator control panel
Assignee: New Holland North America Inc
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Filing: 1987-06-18
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Granted: 1989-04-04
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Expires: 2007-06-18
Abstract
Abstract In one embodiment, an operator control panel includes an enclosure in which a liquid crystal display and a pair of lamps are disposed. A first reflective surface is located inside the enclosure, and a second reflective surface is located outside the enclosure. The lamps are positioned so that light rays from their filaments are projected rearwardly onto the first reflective surface and then forwardly onto the back of the liquid crystal display while other light rays from the lamp filaments are projected forwardly onto the second reflective surface and then downwardly onto the front of the control panel. In another embodiment of the operator control panel, the lamps are disposed outside the enclosure and the second reflective surface is omitted.
Inventors
- 👤 Richard P. Strosser
- 👤 Stuart O. Swiler
- 👤 Marvin G. Weaver, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:27
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/02; G06F3/0202; G06F3/021; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/1336; G02F1/133615; G02F1/133616
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
138 words
An operator control panel comprising: an enclosure defined by a back wall, sidewalls, a top wall, a bottom wall, and a front panel; display means disposed inside said enclosure, said display means being viewable through a window in said front panel; lamp means disposed inside said enclosure; first reflective means located inside said enclosure rearwardly of said lamp means; second reflective means located outside said enclosure forwardly of said lamp means; said lamp means being positioned for projecting first light rays onto said first reflective means and then onto said display means and for projecting second light rays through another window in said front panel onto said second reflective means and then onto said front panel; and a circuit board disposed in said enclosure for supporting said display means, said lamp means being supported on said circuit board.
Claim 2
Dependent Claim
138 words
An operator control panel comprising: an enclosure defined by a back wall, sidewalls, a top wall, a bottom wall, and a front panel; display means disposed inside said enclosure, said display means being viewable through a window in said front panel; lamp means disposed inside said enclosure; first reflective means located inside said enclosure rearwardly of said lamp means; second reflective means located outside said enclosure forwardly of said lamp means; said lamp means being positioned for projecting first light rays onto said first reflective means and then onto said display means and for projecting second light rays through another window in said front panel onto said second reflective means and then onto said front panel; and a circuit board disposed in said enclosure for supporting said display means, said lamp means being supported on said circuit board.
Claim 3
Dependent Claim
40 words
The operator control panel of claim 1, wherein said first reflective means comprises a first reflective surface on said back wall and wherein said second reflective means comprises a second reflective surface on a forward extension of said top wall.
Claim 4
Dependent Claim
23 words
The operator control panel of claim 2, wherein said second reflective surface is disposed at an acute angle to said first reflective surface.
Claim 5
Dependent Claim
29 words
The operator control panel of claim 1, wherein said display means comprises a liquid crystal display positioned such that said first light rays are projected onto the back thereof.
Claim 6
Dependent Claim
61 words
The operator control panel of claim 1, wherein said first light rays are projected rearwardly from said lamp means onto said first reflective means and then forwardly onto the back of said display means while said second light rays are projected forwardly from said lamp means onto said second reflective means and then downwardly onto the front of said front panel.
Claim 7
Dependent Claim
18 words
The operator control panel of claim 1, wherein said lamp means is of the type having a filament.
Claim 8
Dependent Claim
108 words
An operator control panel comprising: an enclosure defined by a back wall, sidewalls, a top wall, a bottom wall, and a front panel; display means disposed inside said enclosure, said display means beng viewable through a window in said front panel; lamp means disposed outside said enclosure; reflective means located inside said enclosure on said back wall rearwardly of said lamp means; and said lamp means being mounted on a forward extension of said top wall for projecting first light rays through another window in said front panel onto said reflective means and then onto said display means and for projecting second light rays onto said front panel.
Claim 9
Dependent Claim
108 words
An operator control panel comprising: an enclosure defined by a back wall, sidewalls, a top wall, a bottom wall, and a front panel; display means disposed inside said enclosure, said display means beng viewable through a window in said front panel; lamp means disposed outside said enclosure; reflective means located inside said enclosure on said back wall rearwardly of said lamp means; and said lamp means being mounted on a forward extension of said top wall for projecting first light rays through another window in said front panel onto said reflective means and then onto said display means and for projecting second light rays onto said front panel.
Claim 10
Dependent Claim
29 words
The operator control panel of claim 7, wherein said display means comprises a liquid crystal display positioned such that said first light rays are projected onto the back thereof.
Claim 11
Dependent Claim
22 words
The operator control panel of claim 8, further comprising a circuit board disposed inside said enclosure for supporting said liquid crystal display.
Claim 12
Dependent Claim
52 words
The operator control panel of claim 7, wherein said first light rays are projected rearwardly from said lamp means onto said reflective means and then forwardly onto the back of said display means while said second light rays are projected downwardly from said lamp means onto the front of said front panel.
Claim 13
Dependent Claim
18 words
The operator control panel of claim 7, wherein said lamp means is of the type having a filament.
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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) | 1992-04-03 | 1992-10-03 | 1993-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-03 | 1996-10-03 | 1997-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-03 | 2000-10-03 | 2001-04-04 | $7700.00 | Window Closed / Lapsed |