US5224410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power booster with vacuum supply passage in position sensor housing
Assignee: Continental Teves AG and Co OHG
•
Filing: 1990-09-05
•
Granted: 1993-07-06
•
Expires: 2010-09-05
Abstract
Abstract A vacuum brake power booster with a connecting member (23) for the connecting nozzle (2) of the vacuum line and for the vacuum non-return valve (3). The connecting member is configured in the shape of a housing for a sensing device which detects the position of the diaphragm retainer (16) within the servo-cylinder (15). The sensing device consists of a scanning pin (22) which allows rotation of a gear (9) by means of a flexible toothed rack (6). The gear allows rotation of a tap (12) on an ohmic resistance. The different voltage values generated in this manner indicated the position of the diaphragm retainer within the servo-cylinder. By an appropriate selection of components, by their configuration, by their mutual adaptation, and by the appropriate assembly of these components into a compact overall assembly unit, the contour of a conventional vacuum brake power booster is not exceeded. The mounting space requirements of the booster are thus reduced. The booster is universally applicable.
Inventors
- 👤 Kai-Michael Graichen
- 👤 Christof Kornas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:04
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/24; B60T13/46; B60T13/52; B60T17/00; B60T17/18; B60T17/22; B60T8/00; B60T8/32; B60T8/34; B60T8/40; B60T8/404; B60T8/4059; B60T8/44; B60T8/447; B60T8/448
Claims Analysis
Total Claims: 61
Claim 1
Independent Claim
103 words
A brake power booster for brake systems with anti-lock and/or traction slip control, which comprises a servo-cylinder having a wall defining a portion of a housing of said servo-cylinder and a servo-piston within said servo-cylinder housing, the position of said servo-piston in said servo-cylinder housing being detected by a sensing device characterized in that a portion of the wall of said servocylinder is configured as a sensing device housing for at lest part of said sensing device, and a connecting member for a servo-fluid is positioned in the wall of said servo-cylinder, which connecting member accommodates at least part of said sensing device.
Claim 2
Dependent Claim
103 words
A brake power booster for brake systems with anti-lock and/or traction slip control, which comprises a servo-cylinder having a wall defining a portion of a housing of said servo-cylinder and a servo-piston within said servo-cylinder housing, the position of said servo-piston in said servo-cylinder housing being detected by a sensing device characterized in that a portion of the wall of said servocylinder is configured as a sensing device housing for at lest part of said sensing device, and a connecting member for a servo-fluid is positioned in the wall of said servo-cylinder, which connecting member accommodates at least part of said sensing device.
Claim 3
Dependent Claim
29 words
A vacuum brake power booster as claimed in claim 1 characterized in that said connecting member is configured as a housing for at least part of said sensing device.
Claim 4
Dependent Claim
22 words
A brake power booster as claimed in claim 2, characterized in that said movable element is positioned centrically within said suction duct.
Claim 5
Dependent Claim
65 words
A vacuum brake power booster as claimed in claim 1, characterized in that said sensing device is composed of a scanning member which actuates a gearing, of an electric element to generate a sensor signal, which is actuated by said gearing, in that at least part of the guide for said scanning member, said gearing, and said electric element are accommodated in said connecting member.
Claim 6
Dependent Claim
31 words
A vacuum brake power booster as claimed in claim 4, characterized in that said gearing comprises a flexible toothed rack and a gear which are in interacting connection with each other.
Claim 7
Dependent Claim
40 words
A vacuum brake power booster as claimed in claim 5, characterized in that said scanning member is comprised of a scanning pin which is connected to said flexible toothed rack and of a telescopic device to guide said scanning pin.
Claim 8
Dependent Claim
31 words
A vacuum brake power booster as claimed in claim 1, characterized in that a spring member is provided which keeps said scanning pin in abutment with said servo-piston through said gearing.
Claim 9
Dependent Claim
27 words
A vacuum brake power booster as claimed in claim 7, characterized in that said electric part consists of a rotary potentiometer which is actuated by said gear.
Claim 10
Dependent Claim
30 words
A vacuum brake power booster as claimed in claim 8, characterized in that a baseplate for the said rotary potentiometer is provided which forms one component together with said gear.
Claim 11
Dependent Claim
72 words
A vacuum brake power booster as claimed in claim 9, characterized in that said rotary potentiometer is comprised of said baseplate which is fabricated of an electrically nonconductive material and on which an ohmic resistance of particularly circular arc-shaped configuration is accommodated, and of a tapping member which is in physical contact with said ohmic resistance and which is adapted to perform a particularly circular arc-shaped movement relative to said ohmic resistance.
Claim 12
Dependent Claim
34 words
A vacuum brake power booster as claimed in claim 10, characterized in that said tapping member is arranged so as to be rotatable by said gear relative to said baseplate with said ohmic resistance.
Claim 13
Dependent Claim
35 words
A vacuum brake power booster as claimed in claim 10, characterized in that said baseplate with said ohmic resistance is arranged so as to be rotatable by said gear relative to the said tapping member.
Claim 14
Dependent Claim
21 words
A vacuum brake power booster as claimed in claim 10, characterized in that said ohmic resistance is positioned on said gear.
Claim 15
Dependent Claim
26 words
A vacuum brake power booster as claimed in claim 10, characterized in that said gear and said rotatable baseplate of said rotary potentiometer are configurated one-part.
Claim 16
Dependent Claim
54 words
A vacuum brake power booster as claimed in claim 6, characterized in that said connecting member is configured as a housing and is positioned at a portion of the wall of said servo-cylinder in such a manner that said scanning pin performs paraxial movements in respect of the axis of the brake power booster.
Claim 17
Dependent Claim
41 words
A vacuum brake power booster as claimed in claim 8, characterized in that said connecting member is made of plastic material and is configured as a hosing within which a common shaft for said gear and said rotary potentiometer is accommodated.
Claim 18
Dependent Claim
32 words
A vacuum brake power booster as claimed in claim 16, characterized in that said connecting member is configured as a housing within which a slide rail for said toothed rack is accommodated.
Claim 19
Dependent Claim
27 words
A vacuum brake power booster as claimed in claim 1, characterized in that said connecting member is configured as an accommodating element for a vacuum non-return valve.
Claim 20
Dependent Claim
27 words
A vacuum brake power booster as claimed in claim 1, characterized in that said connecting member is configured as an accommodating element for a vacuum connecting nozzle.
Claim 21
Dependent Claim
28 words
A vacuum brake power booster as claimed in claim 19, characterized in that said vacuum connecting nozzle is accommodated within said connecting member such as to be rotatable.
Claim 22
Dependent Claim
28 words
A vacuum brake power booster as claimed in claim 1, characterized in that the range of its coupling to said servo-cylinder said connecting member presents a non-circular configuration.
Claim 23
Dependent Claim
66 words
A vacuum brake power booster as claimed in claim 1, characterized in that at its outer circumference and in the range of its connection with said wall of said servo-cylinder, said connecting member is furnished with a buttoning-in collar presenting a saw tooth-shaped external profile, in that an elastic sealing plug is positioned between said opening in said wall of said servo-cylinder and said buttoning-in collar.
Claim 24
Dependent Claim
65 words
A vacuum brake power booster as claimed in claim 1, characterized in that said connecting member is configured as a vacuum connecting valve and is provided with a suction duct which ends up in a vacuum chamber, is positioned in a valve housing, and into which a movable element of said sensing device is introduced telescopingly, covering part of the cross sectional area of suction.
Claim 25
Dependent Claim
37 words
A brake power booster as claimed in claim 23, characterized in that said sensing device is positioned in said vacuum connecting valve which generates an electric output signal depending on the position of the said movable element.
Claim 26
Dependent Claim
33 words
A brake power booster as claimed in claim 24, characterized in that said sensing device is configured as a resistance track on which a slider slides which is driven by said movable element.
Claim 27
Dependent Claim
62 words
A vacuum brake power booster as claimed in claim 24, characterized in that said sensing device is provided with a plurality of contact surfaces which are separated from one another electrically and which in the event of a movement of the said movable element come in touch one after the other with a movable contact being driven by the said movable element.
Claim 28
Dependent Claim
74 words
A brake power booster as claimed in claim 23, characterized in that said movable element is prestressed by a first spring in the direction of its position of rest, in that in said movable element a telescopic element is positioned which is prestressed in the direction of its position of rest by a second spring acting in the same direction, and in that said second spring is much more rigid than said first spring.
Claim 29
Dependent Claim
45 words
A vacuum brake power booster as claimed in claim 37, characterized in that said vacuum connecting valve is provided with a suction nozzle which extends at a predetermined angle in respect of said suction duct, said suction nozzle being rotatable relative to said valve housing.
Claim 30
Dependent Claim
40 words
A vacuum brake power booster as claimed in claims 28, characterized in that an electric connecting device is provided which is fixed to said valve housing and which is rotatable into its fixing position in respect of said valve housing.
Claim 31
Dependent Claim
56 words
A vacuum brake power booster as claimed in claim 29, characterized in that said valve housing is furnished with a plurality of sliding contact rings which are electrically connected to said sensing device and in that said connecting device is provided with a corresponding number of sliding contacts which are adhering onto said sliding contact rings.
Claim 32
Dependent Claim
90 words
A brake power booster comprising: a servo-cylinder having a wall defining a portion of a housing of said servo-cylinder; a servo-piston located within said servo-cylinder housing; sensing means for detecting the position of said servo-piston within said servo-cylinder housing; and a sensing means housing containing at least a portion of said sensing means and positioned in said wall of said servo-cylinder housing to form a portion of said wall, wherein said sensing means housing includes a connecting member positioned in said wall of said servocylinder and through which servo-fluid passes.
Claim 33
Dependent Claim
90 words
A brake power booster comprising: a servo-cylinder having a wall defining a portion of a housing of said servo-cylinder; a servo-piston located within said servo-cylinder housing; sensing means for detecting the position of said servo-piston within said servo-cylinder housing; and a sensing means housing containing at least a portion of said sensing means and positioned in said wall of said servo-cylinder housing to form a portion of said wall, wherein said sensing means housing includes a connecting member positioned in said wall of said servocylinder and through which servo-fluid passes.
Claim 34
Dependent Claim
59 words
A brake power booster according to claim 31 wherein said sensing means include: (a) a movable scanning member responsive to movement of said servo-piston, (b) a guide for said scanning member, (c) a gearing actuated by said scanning member, and (d) signal generating means actuated by said gearing for generating a sensor signal representative of movement of said servo-piston.
Claim 35
Dependent Claim
28 words
A brake power booster according to claim 32 wherein at least part of said guide, said gearing and said signal generating means are positioned within said connecting means.
Claim 36
Dependent Claim
25 words
A brake power booster according to claim 33 wherein said gearing includes: (a) a gear, and (b) a flexible toothed rack engaged by said gear.
Claim 37
Dependent Claim
40 words
A brake power booster according to claim 35 wherein said scanning member is a pin which is coupled to said flexible toothed rack and said guide is a telescoping unit through which said flexible toothed rack and said pin extend.
Claim 38
Dependent Claim
22 words
A brake power booster according to claim 35 further including spring means for urging said pin to maintain contact with said servo-piston.
Claim 39
Dependent Claim
20 words
A brake power booster according to claim 36 wherein said spring means include a helical spring acting upon said gearing.
Claim 40
Dependent Claim
37 words
A brake power booster according to claim 37 wherein said signal generating means include: (a) an ohmic resistance of circular arcshaped configuration located on said gear, and (b) a tapping member in contact with said ohmic resistance.
Claim 41
Dependent Claim
21 words
A brake power booster according to claim 35 wherein said signal generating means include a rotary potentiometer coupled to said gear.
Claim 42
Dependent Claim
58 words
A brake power booster according to claim 39 wherein said rotary potentiometer includes: (a) a baseplate fabricated of an electrically non-conductive material, (b) an ohmic resistance of circular arcshaped configuration located on said baseplate, and (c) a tapping member in contact with said ohmic resistance said tapping member and said ohmic resistance adapted for circular arc-shaped relative movement.
Claim 43
Dependent Claim
17 words
A brake power booster according to claim 40 wherein said tapping member is rotatable by said gear.
Claim 44
Dependent Claim
16 words
A brake power booster according to claim 40 wherein said baseplate is rotatable by said gear.
Claim 45
Dependent Claim
32 words
A brake power booster according to claim 10 wherein said sensing means include a common shaft positioned within said connecting member and upon which said gear and said rotary potentiometer are mounted.
Claim 46
Dependent Claim
23 words
A brake power booster according to claim 43 wherein said connecting member includes a slide rail along which said flexible toothed rack moves.
Claim 47
Dependent Claim
24 words
A brake power booster according to claim 35, wherein said brake power booster defines an axis and said pin moves parallel to said axis.
Claim 48
Dependent Claim
23 words
A brake power booster according to claim 40 wherein said gear and said baseplate of aid potentiometer are formed as a single unit.
Claim 49
Dependent Claim
19 words
A brake power booster according to claim 31 further including a vacuum non-return valve positioned in said connecting member.
Claim 50
Dependent Claim
19 words
A brake power booster according to claim 31 further including a vacuum connecting nozzle positioned in said connecting member.
Claim 51
Dependent Claim
20 words
A brake power booster according to claim 48 wherein said vacuum connecting nozzle is rotatable relative to said connecting member.
Claim 52
Dependent Claim
24 words
A brake power booster according claim 31, wherein said connecting member includes a non-circular part which is positioned in said wall of said servocylinder.
Claim 53
Dependent Claim
47 words
A brake power booster according to claim 32 wherein said connecting member has a saw tooth-shaped external profile and said brake power booster further includes an elastic sealing plug interposed between said saw tooth-shaped external profile of said connecting member collar and said wall of said servo-cylinder.
Claim 54
Dependent Claim
50 words
A brake power booster according to claim 32 wherein: (a) said power brake booster has a vacuum chamber, (b) said connecting member is a vacuum connecting valve having a suction duct opening into said vacuum chamber, and (c) said sensing means include a telescoping unit extending through said suction duct.
Claim 55
Dependent Claim
19 words
A brake power booster according to claim 52 wherein said telescoping unit is positioned centrally within said suction duct.
Claim 56
Dependent Claim
33 words
A brake power booster according to claim 53 wherein said sensing means include: (a) a resistance track, and (b) a sliding element coupled to said telescoping unit and movable along said resistance track.
Claim 57
Dependent Claim
44 words
A brake power booster according to claim 53 wherein said sensing means include: (a) a plurality of contact surfaces electrically isolated from one another, and (b) a contact element coupled to said telescoping unit and movable from one of said contact surfaces to another.
Claim 58
Dependent Claim
51 words
A brake power booster according to claim 52 further including: (a) a first spring urging said telescoping unit to move to its position of rest, and (b) a second spring urging said telescoping unit to move to its position of rest said second spring being more rigid than said first spring.
Claim 59
Dependent Claim
29 words
A brake power booster according to claim 52 wherein said vacuum connecting valve includes a rotatably mounted suction nozzle extending at a predetermined angle relative to said suction duct.
Claim 60
Dependent Claim
24 words
A brake power booster according to claim 57 wherein said sensing means include an electric connecting device rotatable mounted on said vacuum connecting valve.
Claim 61
Dependent Claim
43 words
A brake power booster according to claim 58 wherein said vacuum connecting valve includes a plurality of sliding contact rings electrically connected to said sensing means and said electric connecting device includes a corresponding number of sliding contacts coupled to said sliding rings.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-07-05 | 1997-01-04 | 1997-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-05 | 2001-01-04 | 2001-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-05 | 2005-01-04 | 2005-07-06 | $7700.00 | Window Closed / Lapsed |