Patent US4121303A successfully refreshed from Google Patents.
US4121303A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lightshielding hood for an electrical instrument
Assignee: Individual
•
Filing: 1977-10-17
•
Granted: 1978-10-24
•
Expires: 1997-10-17
Abstract
Abstract A light shield for use with video display units, such as video monitors, television monitors, oscilloscopes or the like to block out ambient light. The light shield is made of a sleeve or hood having one end adapted to fit over video display units and a second end fitting over the face such that the user can view the display unit through the sleeve and limit the outside ambient light reaching the display unit.
Inventors
- 👤 Lawrence L. Reece
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:18
CPC Classifications
A; A42; A42B; A42B1/00; A42B1/018; A42B1/0181; G; G01; G01R; G01R13/00; G01R13/20; G01R13/202
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
155 words
A hood for viewing a video display unit or like device having a front screen in a cabinet with controls adjacent the screen for adjusting the device, said hood comprising: a tubular flexible sleeve of a material that is substantially impervious to light having first and second ends and forming a center opening and having a first opening in said first end communicating with said center opening and of a sufficient diameter and flexibility to fit around the cabinet; means for holding said sleeve around the cabinet; said sleeve second end forming a second opening communicating with the sleeve center opening and being of sufficient size for fitting over the face of a person using the video display unit; and means for maintaining the sleeve over the person's face whereby the user can adjust the sleeve for viewing the oscilloscope screen through the second opening, the center opening and the first opening in the sleeve.
Claim 2
Dependent Claim
155 words
A hood for viewing a video display unit or like device having a front screen in a cabinet with controls adjacent the screen for adjusting the device, said hood comprising: a tubular flexible sleeve of a material that is substantially impervious to light having first and second ends and forming a center opening and having a first opening in said first end communicating with said center opening and of a sufficient diameter and flexibility to fit around the cabinet; means for holding said sleeve around the cabinet; said sleeve second end forming a second opening communicating with the sleeve center opening and being of sufficient size for fitting over the face of a person using the video display unit; and means for maintaining the sleeve over the person's face whereby the user can adjust the sleeve for viewing the oscilloscope screen through the second opening, the center opening and the first opening in the sleeve.
Claim 3
Dependent Claim
43 words
A hood as defined in claim 1 including at least one opening in the sleeve intermediate the first and second ends communicating with the center opening and through which the hand can be inserted for adjusting the controls of the video display unit.
Claim 4
Dependent Claim
39 words
A hood as defined in claim 1 wherein said sleeve is cut the entire length thereof from the first opening to the second opening and a zipper is fixed to the edges of said cut for closing the sleeve.
Claim 5
Dependent Claim
224 words
A hood for viewing a video display unit or like device having a front screen in a cabinet with controls adjacent the screen for adjusting the device, said hood comprising: a tubular flexible sleeve having first and second ends and forming a center opening and having a first opening in said first end communicating with said center opening and of a sufficient diameter and flexibility to fit around the cabinet; means for holding said sleeve around the cabinet; said sleeve second end forming a second opening communicating with the sleeve center opening and being of sufficient size for fitting over the face of a person using the video display unit; said sleeve being cut the entire length thereof from the first opening to the second opening and a zipper fixed to the edges of said cut for closing the sleeve; said zipper including two slide members whereby one slide member can be moved towards the first opening for affixing the hood to the video display unit and the second slide member can be moved towards the second opening for closing the hood over the face of the user; and means for maintaining the sleeve over the person's face whereby the user can adjust the sleeve for viewing the oscilloscope screen through the second opening, the center opening and the first opening in the sleeve.
Claim 6
Dependent Claim
224 words
A hood for viewing a video display unit or like device having a front screen in a cabinet with controls adjacent the screen for adjusting the device, said hood comprising: a tubular flexible sleeve having first and second ends and forming a center opening and having a first opening in said first end communicating with said center opening and of a sufficient diameter and flexibility to fit around the cabinet; means for holding said sleeve around the cabinet; said sleeve second end forming a second opening communicating with the sleeve center opening and being of sufficient size for fitting over the face of a person using the video display unit; said sleeve being cut the entire length thereof from the first opening to the second opening and a zipper fixed to the edges of said cut for closing the sleeve; said zipper including two slide members whereby one slide member can be moved towards the first opening for affixing the hood to the video display unit and the second slide member can be moved towards the second opening for closing the hood over the face of the user; and means for maintaining the sleeve over the person's face whereby the user can adjust the sleeve for viewing the oscilloscope screen through the second opening, the center opening and the first opening in the sleeve.
References Cited (Backward Citations)
US2103608A
Cited
US2376345A
Cited
US2496752A
Cited
US2625684A
Cited
US3109063A
Cited
US3462852A
Cited
US3968521A
Cited
US3849598A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-23 | 1982-04-24 | 1982-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-23 | 1986-04-24 | 1986-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-23 | 1990-04-24 | 1990-10-24 | $7700.00 | Window Closed / Lapsed |