Patent US4559816A successfully refreshed from Google Patents.
US4559816A
Expired / Lapsed
US
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Displacement transducer for detecting the position of an adjusting device
Assignee: Robert Bosch GmbH
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Filing: 1984-03-19
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Granted: 1985-12-24
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Expires: 2004-03-19
Abstract
Abstract A displacement pickup for detecting positions of an adjusting device, in particular an adjusting device of fuel injection pumps. In an advantageous manner, an adjustment of the displacement pickup can be performed with the aid of a cylindrical tang, which is displaceable and fixable in a through bore in the wall of a housing receiving the adjusting device and through the interior of which an adjusting device of the displacement pickup can be adjusted from outside the housing. In a displacement pickup advantageously embodied as a rotary potentiometer, a contact means of a resistor (R a ) of the resistance course of the potentiometer can thus be adjusted.
Inventors
- 👤 Rolf Ebert
- 👤 Peter Knorreck
- 👤 Manfred Kramer
- 👤 Wilfried Merkel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:41
CPC Classifications
F; F02; F02M; F02M59/00; F02M59/44; G; G01; G01D; G01D5/00; G01D5/12; G01D5/14; G01D5/16; G01D5/165; F02M2200/00; F02M2200/24
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
82 words
A displacement pickup for detecting positions of an adjusting device of fuel injection pumps, comprising a housing which receives said adjusting device, a through bore in a wall of said housing, a movable pickup part actuated by said adjusting device and a stationary pickup part disposed on a carrier, a tang disposed on said carrier in which the tang is displaceable in said through bore in said wall of the housing which receives the adjusting device and said tang is flexible therein.
Claim 2
Dependent Claim
82 words
A displacement pickup for detecting positions of an adjusting device of fuel injection pumps, comprising a housing which receives said adjusting device, a through bore in a wall of said housing, a movable pickup part actuated by said adjusting device and a stationary pickup part disposed on a carrier, a tang disposed on said carrier in which the tang is displaceable in said through bore in said wall of the housing which receives the adjusting device and said tang is flexible therein.
Claim 3
Dependent Claim
55 words
A displacement pickup as defined by claim 1, in which the tang is slit on its outer end oriented toward the outside of the housing and is fixable in a predetermined relationship of the carrier to the adjusting device by means of a conical clamping piece introduced into the slit in said tang from outside.
Claim 4
Dependent Claim
36 words
A displacement pickup as defined by claim 2, in which the tang has a longitudinal through bore provided with a thread, into which a screw with a conical end section is insertable from outside the housing.
Claim 5
Dependent Claim
38 words
A displacement pickup as defined by claim 3, in which the tang is embodied cylindrically and the carrier is secured against twisting by a guide means provided on the housing and which permits longitudinal displacement of the tang.
Claim 6
Dependent Claim
38 words
A displacement pickup as defined by claim 2, in which the tang is embodied cylindrically and the carrier is secured against twisting by a guide means provided on the housing and which permits longitudinal displacement of the tang.
Claim 7
Dependent Claim
38 words
A displacement pickup as defined by claim 4, in which the displacement pickup is disposed in an at least partially fluid-filled space inside the housing and the tang is sealed off from the outside in the through bore.
Claim 8
Dependent Claim
52 words
A displacement pickup as defined by claim 1, in which a setting device is provided on said stationary displacement pickup part and actuatable through the longitudinal through bore in the tang, by means of which an adjustment of a signal emitted by the displacement pickup can be accomplished, by said setting device.
Claim 9
Dependent Claim
133 words
A displacement pickup as defined by claim 7, in which the stationary pickup part has a resistance path disposed on the carrier, which path is at least part of a resistance course connected between contact poles of a voltage source and is in contact with a wiper, in which said wiper at least partially embodies a movable pickup part and at which a voltage corresponding to the position of the adjusting device can be picked up, and a lever, said lever carrying the wiper, and the resistance course and said lever are disposed in a fluid-tight pickup housing, the lever is seated on a shaft that is guided tightly through a cap of the pickup housing and on the outer end has an actuating lever, which can be coupled with the adjusting device.
Claim 10
Dependent Claim
30 words
A displacement pickup as defined by claim 8, in which the effective total resistance of the resistance course is variable by means of said setting device on the displacement pickup.
Claim 11
Dependent Claim
33 words
A displacement pickup as defined by claim 9, in which the setting device comprises a wiper adjustable on the resistance path, which wiper is one of the contacts defining the effective resistance course.
Claim 12
Dependent Claim
48 words
A displacement pickup as defined by claim 10, in which the longitudinal bore is embodied as a threaded bore in the cylindrical tang, in which bore a screw can be fully rotated, while its end is projecting into the interior of the housing and coupled with the wiper.
Claim 13
Dependent Claim
155 words
A displacement pickup for detecting positions of an adjusting device of fuel injection pumps, comprising a movable pickup part actuated by the adjusting device, a carrier and a stationary pickup part disposed on said carrier, which stationary part has a resistance path disposed on the carrier, which resistance path is at least part of a resistance course connected between contact poles of a voltage source and is in contact with a wiper which wiper at least partially embodies the movable pickup part and at which a voltage corresponding to a position of the adjusting device can be picked up, in which the adjusting device executes a linear movement by means of which, a lever that is pivotable about a pivot point and carries said wiper can be actuated, a coupling for actuating said wiper and the resistance path is embodied as a path having a linear course located in a pivoting range of the wiper.
Claim 14
Dependent Claim
155 words
A displacement pickup for detecting positions of an adjusting device of fuel injection pumps, comprising a movable pickup part actuated by the adjusting device, a carrier and a stationary pickup part disposed on said carrier, which stationary part has a resistance path disposed on the carrier, which resistance path is at least part of a resistance course connected between contact poles of a voltage source and is in contact with a wiper which wiper at least partially embodies the movable pickup part and at which a voltage corresponding to a position of the adjusting device can be picked up, in which the adjusting device executes a linear movement by means of which, a lever that is pivotable about a pivot point and carries said wiper can be actuated, a coupling for actuating said wiper and the resistance path is embodied as a path having a linear course located in a pivoting range of the wiper.
Claim 15
Dependent Claim
65 words
A displacement pickup as defined by claim 12 which includes a fluid tight housing in which the resistance course and the lever carrying the wiper are accommodated, a shaft which is tightly guided through a cap of the housing on which said lever is disposed and which the outer end of said shaft has an actuating lever which can be coupled with the adjusting device.
Claim 16
Dependent Claim
28 words
A displacement pickup as defined by claim 12 in which the resistance path is made of conductive plastic and is disposed on a carrier plate of insulating material.
Claim 17
Dependent Claim
39 words
A displacement pickup as defined by claim 14, in which next to the resistance path is disposed a contact path, which is connected with the wiper and serves to further conduct the voltage picked up at the resistance path.
Claim 18
Dependent Claim
32 words
A displacement pickup as defined by claim 15, in which the connection conductor of the contact means of the resistance path and the contact path are cast integrally with the carrier plate.
Claim 19
Dependent Claim
26 words
A displacement pickup as defined by claim 14, in which the lever carrying the wiper is made of non-conductive plastic and is sprayed onto the shaft.
Claim 20
Dependent Claim
58 words
A displacement pickup as defined by claim 12, in which the displacement pickup includes a housing which is disposed in an at least partially fluid-filled space receiving the adjusting device, and for securing purposes the housing has a cylindrical tank, which is tightly displaceable in a through bore of a wall defining this space and is fixable therein.
Claim 21
Dependent Claim
46 words
A displacement pickup as defined by claim 18, in which the cylindrical tang is slit at its outermost end and by means of a conical clamping piece introduceable therein from outside the space is fixable in a predetermined relationship of the housing to the adjusting device.
Claim 22
Dependent Claim
47 words
A displacement transducer as defined by claim 18 in which the cylindrical tang has a longitudinal bore discharging into the interior of the housing, through which bore an adjusting device is actuatable, by means of which device the effective total resistance of the resistance course is variable.
Claim 23
Dependent Claim
34 words
A displacement pickup as defined by claim 20, in which the adjusting device comprises a wiper contact displaceable on the resistance path, which wiper contact is one of the contacts of the resistance course.
Claim 24
Dependent Claim
48 words
A displacement pickup as defined by claim 21, in which the longitudinal bore in the cylindrical tang is embodied as a threaded bore in which a screw can be fully rotated, with an end that protrudes into the interior of the housing which couples the wiper contact thereto.
Claim 25
Dependent Claim
30 words
A displacement pickup as defined by claim 22, in which a clamping screw with a conical head is threadable into the threaded bore in order to fix the cylindrical tang.
Claim 26
Dependent Claim
23 words
A displacement pickup as defined by claim 18, in which the through bore is tightly closable from the outside by a closure cap.
References Cited (Backward Citations)
US2642047A
Cited
US4455868A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-23 | 1989-06-24 | 1989-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-23 | 1993-06-24 | 1993-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-23 | 1997-06-24 | 1997-12-24 | $7700.00 | Window Closed / Lapsed |