US5363149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Projection television set
Assignee: Mauser Werke GmbH
•
Filing: 1993-04-21
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Granted: 1994-11-08
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Expires: 2013-04-21
Abstract
Abstract A projection television set includes a body composed of at least two divided upper and lower units, a screen assembly having an integrally formed screen corresponding to the body, and a plurality of bolt and nut assemblies for coupling the divided units together. Each of the upper and lower units has a projector for emitting light rays for forming an image on a screen and a reflector for reflecting the light rays from the projector onto the screen. The projector of the lower unit is arranged below the reflector of the lower unit, and the projector of the upper unit is arranged in an intermediate position between the reflector of the upper unit and the reflector of the lower unit so that setting angles of the two reflectors are different from each other. A screen assembly is mounted on a front face of the body. A hook member is mounted on a frame of the screen assembly, a hook receiving member is mounted on the body casing, and the screen assembly is supported by the hook receiving member and freely rotatable about the hook receiving member.
Inventors
- 👤 Takashi Furuno
- 👤 Toshiya Wakasa
- 👤 Jun Iizuka
- 👤 Kanehiro Hagiwara
- 👤 Mitsuyoshi Mitake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:35
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/10; H; H04; H04N; H04N9/00; H04N9/12; H04N9/31; H04N9/3141; H04N9/3147
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
165 words
A projection television set comprising: a body composed of right and left divided units, each unit having at least one projector and one reflex mirror for directing projection light rays from the projector to a screen; a screen assembly having an integrally formed screen arranged so that any seam lines of said units disappear and having a circular Fresnel lens and a lenticular sheet which receives projection light rays from the projectors to form an image on the screen; a coupling device for coupling said screen assembly and said divided units together, said coupling device including a hook pin provided at upper positions of the left and rights units and hook engagement devices provided on an upper portion of the screen assembly for engagement with the hook pins whereby the screen assembly may be openably held on respective front faces of the divided units; and a caster assembly at the bottom of each of the divided units to permit independent movement of the divided units.
Claim 2
Dependent Claim
165 words
A projection television set comprising: a body composed of right and left divided units, each unit having at least one projector and one reflex mirror for directing projection light rays from the projector to a screen; a screen assembly having an integrally formed screen arranged so that any seam lines of said units disappear and having a circular Fresnel lens and a lenticular sheet which receives projection light rays from the projectors to form an image on the screen; a coupling device for coupling said screen assembly and said divided units together, said coupling device including a hook pin provided at upper positions of the left and rights units and hook engagement devices provided on an upper portion of the screen assembly for engagement with the hook pins whereby the screen assembly may be openably held on respective front faces of the divided units; and a caster assembly at the bottom of each of the divided units to permit independent movement of the divided units.
Claim 3
Dependent Claim
46 words
The projection television set according to claim 1, wherein each divided units is further divided into upper and lower units, and each of the upper and lower units has a projector and a reflex mirror for directing projection light rays from the projector to the screen.
Claim 4
Dependent Claim
23 words
The projection television set according to claim 2, wherein each of said projectors has three CRTs for R, G and B projecting lenses.
Claim 5
Dependent Claim
34 words
The projection television set according to claim 3, wherein the left divided unit has a speaker on a left side thereof, and the right divided unit has a speaker on a right side thereof.
Claim 6
Dependent Claim
19 words
The projection television set according to claim 1, wherein said divided units each includes a leveler for fine adjustment.
Claim 7
Dependent Claim
91 words
The projection television set according to claim 1, further comprising: a body casing having a front face, said body casing provided with a projector portion in its interior; a screen assembly mounted on said front face of said body casing, said screen assembly having a frame, and a first hook means mounted on said frame of said screen assembly; and an associated second hook means mounted on said body casing for engaging with said first hook means to thereby support said screen assembly member freely rotatably about said second hook means.
Claim 8
Dependent Claim
32 words
The projection television set according to claim 6, further comprising a support rod means for retaining said screen assembly in an open state after opening said front face of said body casing.
Claim 9
Dependent Claim
30 words
The projection television set according to claim 7, wherein said support rod means includes a support rod rotatably mounted on said body casing and detachably retained in said body casing.
Claim 10
Dependent Claim
27 words
The projection television set according to claim 1, wherein said body includes a printed circuit board having a deflection drive circuit and a high voltage circuit thereon.
Claim 11
Dependent Claim
48 words
The projection television set according to claim 1, wherein each of said divided units includes an upper unit and a lower unit and a setting angle of the reflector corresponding to the lower unit is larger than a setting angle of the reflector corresponding to the upper unit.
Claim 12
Dependent Claim
41 words
A projection television set according to claim 1, wherein said circular Fresnel lens comprises four lens section which are bonded to each other, said four lens sections including two sections for the upper units and two sections for the lower units.
Claim 13
Dependent Claim
43 words
A projection television set according to claim 11, wherein each of the two lens sections for the upper unit has a circular center (O 1 ) corresponding to each of the upper units and being positioned below an inherent center (O 0 ).
Claim 14
Dependent Claim
56 words
The projection television set according to claim 12, wherein said body is composed of right, center and left divided units, each divided unit is further divided into upper and lower units, and each of the upper and lower units has a projector and reflex mirror for directing projection light rays from the projector to the screen.
Claim 15
Dependent Claim
18 words
The projection television set according to claim 12, wherein said coupling apparatus, includes a bolt and nut assembly.
Claim 16
Dependent Claim
25 words
The projection television set according to claim 12, wherein said divided units each includes a caster assembly for delivery and a leveler for fine adjustment.
Claim 17
Dependent Claim
22 words
A projection television set according to claim 1, wherein said lenticular sheet comprises two sheet sections which are bonded to each other.
Claim 18
Dependent Claim
171 words
A projection television set comprising: a body composed of right, center and left divided units, each unit having at least one projector and one reflex mirror for directing projection light rays from the projector to a screen; a screen assembly having an integrally formed screen arranged so that any seam lines of said units disappear and having a circular Fresnel lens and a lenticular sheet which receives projection light rays from the projectors to form an image on the screen; a coupling device for coupling said screen assembly and at least said right and left divided units together, said coupling device including a hook pin provided at upper positions of the left and right units and hook engagement devices provided on an upper portion of the screen assembly for engagement with the hook pins whereby the screen assembly may be openably held on respective front faces of the divided units; and a caster assembly at the bottom of each of the divided units to permit independent movement of the divided units.
Claim 19
Dependent Claim
171 words
A projection television set comprising: a body composed of right, center and left divided units, each unit having at least one projector and one reflex mirror for directing projection light rays from the projector to a screen; a screen assembly having an integrally formed screen arranged so that any seam lines of said units disappear and having a circular Fresnel lens and a lenticular sheet which receives projection light rays from the projectors to form an image on the screen; a coupling device for coupling said screen assembly and at least said right and left divided units together, said coupling device including a hook pin provided at upper positions of the left and right units and hook engagement devices provided on an upper portion of the screen assembly for engagement with the hook pins whereby the screen assembly may be openably held on respective front faces of the divided units; and a caster assembly at the bottom of each of the divided units to permit independent movement of the divided units.
Claim 20
Dependent Claim
46 words
The projection television set according to claim 17, wherein each divided unit is further divided into upper and lower units, and each of the upper and lower units has the projector and the reflex mirror for directing projection light rays from the projector to the screen.
Claim 21
Dependent Claim
29 words
The projection television set according to claim 12, wherein an eccentric angle between the center (O 1 ) and the inherent center (O 0 ) is approximately 3 degrees.
References Cited (Backward Citations)
JPS57127368A
Cited
JPS58161585A
Cited
US4577928A
Cited
FR2561792A1
Cited
JPS6388976A
Cited
JPS6420983A
Cited
EP0331847A2
Cited
US4903137A
Cited
JPH0373938A
Cited
US5011277A
Cited
JPH03226190A
Cited
US5085495A
Cited
EP0464663A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-11-07 | 1998-05-09 | 1998-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-11-07 | 2002-05-09 | 2002-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-11-07 | 2006-05-09 | 2006-11-08 | $7700.00 | Window Closed / Lapsed |