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US5678913A Expired / Lapsed US ⏱️ 0.0 years remaining

Indicating instrument

Assignee: Denso Corp
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Filing: 1996-11-08
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Granted: 1997-10-21
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Expires: 2016-11-08
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Abstract

Abstract An indicator for use in a vehicle instrument panel has a light conductive pointer illuminated by a light emitting diode or LED. In order to provide an increased illuminating surface of the pointer, a slit is formed on a cap to extend from the outer periphery of the cap to a portion above a center of rotation of the pointer driven by a driving shaft. A fixture is connected to the driving shaft and holds a light receiving portion of the pointer at the portion above the center of rotation and the LED in the optical alignment with the pointer at a portion off an axis of the center of rotation. A balancing weight is disposed at a portion opposite the LED with respect to the driving shaft in order to keep balance of the indicator.

Inventors

  • 👤 Tadaaki Ishimaru
  • 👤 Teruaki Araki
  • 👤 Tsutomu Yoshikawa

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 12:43
CPC Classifications
G; G01; G01D; G01D11/00; G01D11/28; B; B60; B60Q; B60Q3/00; B60Q3/10; B60Q3/14; B60K; B60K35/00; B60K35/20; B60K35/21; B60K35/60; B60Q3/60; B60Q3/62; B60Q3/64; G01D13/00; G01D13/22; G01D13/26; G01D13/265; G01D13/28; B60K2360/00; B60K2360/60; B60K2360/68; B60K2360/698; B60K2360/6992

Claims Analysis

Total Claims: 38
Claim 1
Independent Claim 132 words
An indicating instrument including an internal driving unit with a driving shaft, an indicator, a light emitting element with leads and an electric source, wherein said indicator comprises: a light conductive pointer having a light receiving portion and an illuminating surface; a fixture, having a center of rotation connected to said driving shaft, for securing said light receiving portion of said pointer adjacent to said light emitting element; a cap-shaped cover disposed on said fixture for holding said pointer and said light emitting element in a space formed between said cover and said fixture in place; and a connecting member for connecting said light emitting element and said electric source; wherein said fixture comprises a balancing weight at a portion opposite said light emitting element with respect to said center of rotation.
Claim 2
Dependent Claim 132 words
An indicating instrument including an internal driving unit with a driving shaft, an indicator, a light emitting element with leads and an electric source, wherein said indicator comprises: a light conductive pointer having a light receiving portion and an illuminating surface; a fixture, having a center of rotation connected to said driving shaft, for securing said light receiving portion of said pointer adjacent to said light emitting element; a cap-shaped cover disposed on said fixture for holding said pointer and said light emitting element in a space formed between said cover and said fixture in place; and a connecting member for connecting said light emitting element and said electric source; wherein said fixture comprises a balancing weight at a portion opposite said light emitting element with respect to said center of rotation.
Claim 3
Dependent Claim 32 words
An indicating instrument claimed in claim 1 wherein said cap-shaped cover has a slit extending from an outer periphery so that said illuminating surface of said pointer is visible to a driver.
Claim 4
Dependent Claim 23 words
An indicating instrument claimed in claim 2, wherein said slit extends from said outer periphery to a portion above said center of rotation.
Claim 5
Dependent Claim 38 words
An indicating instrument claimed in claim 1, wherein said connecting member has a flat portion which is longer than said light emitting element and disposed on said fixture in parallel with an axis of said light emitting element.
Claim 6
Dependent Claim 36 words
An indicating instrument claimed in claim 4, wherein said connecting member comprises terminal members extending close to said leads of said light emitting element so that said leads are connected to said terminal members without bending.
Claim 7
Dependent Claim 24 words
An indicating instrument claimed in claim 1, wherein said flat portion of said connecting member comprises a conductive plate molded integrally with said fixture.
Claim 8
Dependent Claim 24 words
An indicating instrument claimed in claim 6, wherein said connecting member comprises a plurality of terminal members made of a same sheet of material.
Claim 9
Dependent Claim 36 words
An indicating instrument claimed in claim 1, wherein said connecting member comprises terminal members extending close to said leads of said light emitting element so that said leads are connected to said terminal members without bending.
Claim 10
Dependent Claim 24 words
An indicating instrument claimed in claim 1, wherein said cap-shaped cover and said fixture in combination comprises ribs for securing said light emitting element.
Claim 11
Dependent Claim 31 words
An indicating instrument claimed in claim 9, wherein said cap-shaped cover and said fixture in combination comprises member for providing a small clearance between said ribs and said light emitting element.
Claim 12
Dependent Claim 25 words
An indicating instrument claimed in claim 10, wherein said cap-shaped cover and said fixture in combination comprises a cushion member disposed in said small clearance.
Claim 13
Dependent Claim 27 words
An indicating instrument claimed in claim 1, wherein said light receiving portion of said pointer comprises a concave light receiving surface at least an upper portion thereof.
Claim 14
Dependent Claim 33 words
An indicating instrument claimed in claim 12, wherein said concave light receiving surface comprises a hemispheric surface having its center disposed at a portion where light of said light emitting element is emitted.
Claim 15
Dependent Claim 18 words
An indicating instrument claimed in claim 12, wherein said concave light receiving surface comprises a vertically cylindrical surface.
Claim 16
Dependent Claim 29 words
An indicating instrument claimed in claim 1, wherein said light receiving portion of said pointer comprises a horizontally convex light receiving surface at least at an upper portion thereof.
Claim 17
Dependent Claim 18 words
An indicating instrument claimed in claim 15, wherein said concave light receiving surface comprises a horizontally cylindrical surface.
Claim 18
Dependent Claim 25 words
An indicating instrument claimed in claim 1, wherein said light receiving portion of said pointer comprises a horizontally convex surface and a vertically concave surface.
Claim 19
Dependent Claim 32 words
An indicating instrument claimed in claim 1, wherein said pointer comprises a toothed bottom surface having first reflecting surfaces facing said light receiving portion and second reflecting surfaces facing said pointed end.
Claim 20
Dependent Claim 34 words
An indicating instrument claimed in claim 18, wherein said first reflecting surfaces have an inclination angle with respect to an axis of said light emitting element smaller than that of said second reflecting surfaces.
Claim 21
Dependent Claim 24 words
An indicating instrument claimed in claim 18, wherein said toothed bottom surface is disposed in parallel with an axis of said light emitting element.
Claim 22
Dependent Claim 27 words
An indicating instrument claimed in claim 18, wherein said inclination angle of said second reflecting surfaces are approximately perpendicular to said axis of said light emitting element.
Claim 23
Dependent Claim 18 words
An indicating instrument claimed in claim 1, wherein said pointer comprises a matted portion at said upper surface.
Claim 24
Dependent Claim 18 words
An indicating instrument claimed in claim 1, wherein said pointer comprises a colored portion at a bottom portion.
Claim 25
Dependent Claim 17 words
An indicating instrument claimed in claim 1, wherein said light emitting element comprises a light emitting diode.
Claim 26
Dependent Claim 144 words
An indicating instrument for use in a vehicle instrument panel including an internal driving unit for driving an indicator in response to a vehicle information, a light emitting element with leads and an electric source, wherein said indicator comprises: a light conductive pointer having an illuminating surface and a light receiving portion; a casing, having a center of rotation connected to said internal driving unit and a slit exposing said illuminating surface to the outside, for securing said light receiving portion of said pointer to a portion above said center of rotation and said light emitting element in an optical alignment to said light receiving portion; and a connecting member for connecting said light emitting element and said electric source, wherein said casing further comprises a balancing weight disposed at a portion opposite said light emitting element with respect to said center of rotation.
Claim 27
Dependent Claim 144 words
An indicating instrument for use in a vehicle instrument panel including an internal driving unit for driving an indicator in response to a vehicle information, a light emitting element with leads and an electric source, wherein said indicator comprises: a light conductive pointer having an illuminating surface and a light receiving portion; a casing, having a center of rotation connected to said internal driving unit and a slit exposing said illuminating surface to the outside, for securing said light receiving portion of said pointer to a portion above said center of rotation and said light emitting element in an optical alignment to said light receiving portion; and a connecting member for connecting said light emitting element and said electric source, wherein said casing further comprises a balancing weight disposed at a portion opposite said light emitting element with respect to said center of rotation.
Claim 28
Dependent Claim 17 words
An indicating instrument claimed in claim 25, wherein said light conductive pointer comprises a toothed bottom surface.
Claim 29
Dependent Claim 20 words
An indicating instrument claimed in claim 26, wherein said light conductive pointer comprises a matted portion at said illuminating surface.
Claim 30
Dependent Claim 209 words
An indicating instrument including an internal driving unit with a driving shaft, an indicator, a light emitting element with leads and an electric source, wherein said indicator comprises: a light conductive pointer having a pointed end, a light receiving portion and an illuminating surface; a fixture, having a center of rotation connected to said driving shaft, for securing said light receiving portion of said pointer to a portion above said center of rotation and said light emitting element adjacent to said light receiving portion; a cap-shaped cover disposed on said fixture for holding said pointer and said light emitting element in a space formed between said cover and said fixture in place, said cover having a slit extending from an outer periphery to a portion above said center of rotation so that said illuminating surface of said pointer is visible to a driver; and a connecting member for connecting said light emitting element and said electric source, said connecting member having a flat portion which is longer than said light emitting element and disposed on said fixture in parallel with an axis of said light emitting element, wherein said fixture comprises a balancing weight at a portion opposite said light emitting element with respect to said center of rotation.
Claim 31
Dependent Claim 209 words
An indicating instrument including an internal driving unit with a driving shaft, an indicator, a light emitting element with leads and an electric source, wherein said indicator comprises: a light conductive pointer having a pointed end, a light receiving portion and an illuminating surface; a fixture, having a center of rotation connected to said driving shaft, for securing said light receiving portion of said pointer to a portion above said center of rotation and said light emitting element adjacent to said light receiving portion; a cap-shaped cover disposed on said fixture for holding said pointer and said light emitting element in a space formed between said cover and said fixture in place, said cover having a slit extending from an outer periphery to a portion above said center of rotation so that said illuminating surface of said pointer is visible to a driver; and a connecting member for connecting said light emitting element and said electric source, said connecting member having a flat portion which is longer than said light emitting element and disposed on said fixture in parallel with an axis of said light emitting element, wherein said fixture comprises a balancing weight at a portion opposite said light emitting element with respect to said center of rotation.
Claim 32
Dependent Claim 127 words
An indicating instrument including an internal driving unit with a driving shaft, an indicator, a light emitting element with leads and an electric source, wherein said indicator comprises: a light conductive pointer having a light receiving portion and an illuminating surface; a fixture, having a center of rotation connected to said driving shaft, for securing said light receiving portion of said pointer adjacent to said light emitting element; a cap-shaped cover disposed on said fixture for holding said pointer in a space formed between said cover and said fixture in place; and a connecting member for connecting said light emitting element and said electric source; wherein said fixture comprises a balancing weight at a portion opposite said light emitting element with respect to said center of rotation.
Claim 33
Dependent Claim 127 words
An indicating instrument including an internal driving unit with a driving shaft, an indicator, a light emitting element with leads and an electric source, wherein said indicator comprises: a light conductive pointer having a light receiving portion and an illuminating surface; a fixture, having a center of rotation connected to said driving shaft, for securing said light receiving portion of said pointer adjacent to said light emitting element; a cap-shaped cover disposed on said fixture for holding said pointer in a space formed between said cover and said fixture in place; and a connecting member for connecting said light emitting element and said electric source; wherein said fixture comprises a balancing weight at a portion opposite said light emitting element with respect to said center of rotation.
Claim 34
Dependent Claim 32 words
An indicating instrument claimed in claim 29 wherein said cap-shaped cover has a slit extending from an outer periphery so that said illuminating surface of said pointer is visible to a driver.
Claim 35
Dependent Claim 23 words
An indicating instrument claimed in claim 30, wherein said slit extends from said outer periphery to a portion above said center of rotation.
Claim 36
Dependent Claim 38 words
An indicating instrument claimed in claim 29, wherein said connecting member has a flat portion which is longer than said light emitting element and disposed on said fixture in parallel with an axis of said light emitting element.
Claim 37
Dependent Claim 36 words
An indicating instrument claimed in claim 32, wherein said connecting member comprises terminal members extending close to said leads of said light emitting element so that said leads are connected to said terminal members without bending.
Claim 38
Dependent Claim 17 words
An indicating instrument claimed in claim 29, wherein said light emitting element is mounted on said fixture.

References Cited (Backward Citations)

EP0006361A1 Cited
JPS6410625A Cited
JPH0249592A Cited
DE3837295A1 Cited
EP0411799A1 Cited
US5142453A Cited
US5078079A Cited
US5319527A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2000-10-20 2001-04-21 2001-10-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2004-10-20 2005-04-21 2005-10-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2008-10-20 2009-04-21 2009-10-21 $7700.00 Window Closed / Lapsed

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