US5070728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Throttle sensor
Assignee: Hitachi Ltd
•
Filing: 1990-09-12
•
Granted: 1991-12-10
•
Expires: 2010-09-12
Abstract
Abstract A throttle value spindle (3) is rotatably fixed to a throttle body (1). A recess is provided within the throttle body at one side of the throttle value spindle along the axial direction of the throttle valve spindle. A holder (6) is fixed to the throttle valve spindle within the recess and has brushes (7) at the opposite side of the throttle valve spindle, which rotates together with the throttle valve spindle. Resistors (12) are mounted on a ceramics circuit board (8) fixed on a housing (12). The housing engages with the recess in such a manner that the resistors contact with the brushes. When the brushes slide on the resistors corresponding to the rotation of the throttle value spindle, an electric signal is outputted continuously from the resistors.
Inventors
- 👤 Masanori Kubota
- 👤 Sadayasu Ueno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:01
CPC Classifications
G; G01; G01D; G01D5/00; G01D5/12; G01D5/14; G01D5/16; G01D5/165; G01D5/1655; G01B; G01B7/00; G01B7/30
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
133 words
A contact type throttle sensor for detecting a rotational angle of a throttle valve spindle rotatably mounted in a throttle body of an internal combustion engine comprising: a holder fixed to one end of said throttle valve spindle and having a brush which rotates along a predetermined path together with said throttle valve spindle; a circuit board having a resistor mounted thereon for contact with said brush and which is positioned perpendicular to the axial direction of said throttle valve spindle; and a housing holding said circuit board and being furnished with a lead frame and a connector for relaying an electric signal of said resistor, said housing being detachably fixed to said throttle body; wherein said housing further comprises means for adjusting a position of said brush with respect to the resistor.
Claim 2
Dependent Claim
133 words
A contact type throttle sensor for detecting a rotational angle of a throttle valve spindle rotatably mounted in a throttle body of an internal combustion engine comprising: a holder fixed to one end of said throttle valve spindle and having a brush which rotates along a predetermined path together with said throttle valve spindle; a circuit board having a resistor mounted thereon for contact with said brush and which is positioned perpendicular to the axial direction of said throttle valve spindle; and a housing holding said circuit board and being furnished with a lead frame and a connector for relaying an electric signal of said resistor, said housing being detachably fixed to said throttle body; wherein said housing further comprises means for adjusting a position of said brush with respect to the resistor.
Claim 3
Dependent Claim
42 words
A contact type throttle sensor according to claim 1, wherein a first surface of said holder is adjacent to said throttle body, said brush being located on a second surface of the holder facing in a direction opposite to said first surface.
Claim 4
Dependent Claim
21 words
A contact type throttle sensor according to claim 2, wherein said brushes are located adjacent to a rim of said holder.
Claim 5
Dependent Claim
61 words
A contact type throttle sensor according to claim 1, wherein said holder is located within a recess of said throttle body, and said circuit board is fixed to said housing which engages in said recess said recess and said housing being dimensional, whereby said brushes hold a predetermined contact pressure with said resistor when said housing is engaged in said recess.
Claim 6
Dependent Claim
26 words
A contact type throttle sensor according to claim 1, wherein said housing forms a unitary structure with said circuit board, said lead frame and said connector.
Claim 7
Dependent Claim
47 words
A contact type throttle sensor according to claim 1, wherein said adjusting means comprises adjustment slots for finely adjusting the position of said housing on said throttle body to produce an initial value of the electric signal corresponding to the rotational angle of the throttle valve spindle.
Claim 8
Dependent Claim
19 words
A contact type throttle sensor as in claim 6 wherein said at least two adjustment slots comprise unloaded holes.
Claim 9
Dependent Claim
16 words
A contact type throttle sensor according to claim 1, wherein said resistors comprises electrically conductive plastic.
Claim 10
Dependent Claim
25 words
A contact type throttle sensor as in claim 1, wherein said adjusting means moves said resistor either up or down with respect to said brush.
Claim 11
Dependent Claim
15 words
A contact type throttle sensor as in claim 1, wherein said circuit board is ceramic.
Claim 12
Dependent Claim
122 words
A contact type throttle sensor for detecting a rotational angle of a throttle valve spindle rotatably mounted in a throttle body of an internal combustion engine comprising: a holder being fixed to one end of said throttle valve spindle and having a plurality of brushes which rotate along a predetermined path together with said throttle valve spindle; a circuit board having a plurality of resistors mounted thereon for contact with said plurality of brushes and located on a plane substantially perpendicular to the axial direction of said throttle valve spindle; and a housing holding said circuit board and having a lead frame and a connector for transmitting an electric signal of said resistors, said housing being detachably fixed to said throttle body.
Claim 13
Dependent Claim
122 words
A contact type throttle sensor for detecting a rotational angle of a throttle valve spindle rotatably mounted in a throttle body of an internal combustion engine comprising: a holder being fixed to one end of said throttle valve spindle and having a plurality of brushes which rotate along a predetermined path together with said throttle valve spindle; a circuit board having a plurality of resistors mounted thereon for contact with said plurality of brushes and located on a plane substantially perpendicular to the axial direction of said throttle valve spindle; and a housing holding said circuit board and having a lead frame and a connector for transmitting an electric signal of said resistors, said housing being detachably fixed to said throttle body.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-12-09 | 1995-06-10 | 1995-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-09 | 1999-06-10 | 1999-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-09 | 2003-06-10 | 2003-12-10 | $7700.00 | Window Closed / Lapsed |