US5168758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Force/strain and structure-borne noise transducer
Assignee: KK Holding AG
•
Filing: 1991-05-31
•
Granted: 1992-12-08
•
Expires: 2011-05-31
Abstract
Abstract A transducer combining a force or strain or both sensor in a common housing with a structure-borne noise sensor and responsive to transmissions at a common mounting surface of the housing. The transducer may be in a force transducer, a surface strain transducer, or a screw strain transducer.
Inventors
- 👤 Peter Wolfer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:51
CPC Classifications
G; G05; G05D; G05D15/00; G05D15/01; B; B23; B23Q; B23Q17/00; B23Q17/09; B23Q17/0952; B23Q17/0966; B23Q17/098; G01; G01H; G01H11/00; G01H11/06; G01L; G01L1/00; G01L1/16; G01L5/00; G01L5/16; G01L5/167; G01P; G01P15/00; G01P15/18; G01N; G01N2291/00; G01N2291/02; G01N2291/028; G01N2291/02827
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
68 words
A force/strain and structure-borne noise transducer comprising: a housing having a mounting surface through which force, strain and structure-borne noise are transmitted from a structure to which said mounting surface is mounted; one of a force or strain sensor in said housing for receiving force or strain respectively from said mounting surface; and a structure-borne noise sensor in said housing for receiving structure-borne noise from said mounting surface.
Claim 2
Dependent Claim
68 words
A force/strain and structure-borne noise transducer comprising: a housing having a mounting surface through which force, strain and structure-borne noise are transmitted from a structure to which said mounting surface is mounted; one of a force or strain sensor in said housing for receiving force or strain respectively from said mounting surface; and a structure-borne noise sensor in said housing for receiving structure-borne noise from said mounting surface.
Claim 3
Dependent Claim
33 words
A force/strain and structure-borne noise transducer according to claim 1 wherein one sensor is an annular force sensor and said structure borne noise sensor is entirely in a central bore of said annulus.
Claim 4
Dependent Claim
21 words
Force/strain and structure-borne noise transducer according to claim 2 wherein said annular force sensor is responsive to forces along plural axes.
Claim 5
Dependent Claim
17 words
Force/strain and structure-borne noise transducer according to claim 2 wherein said annular force sensor includes quartz annuli.
Claim 6
Dependent Claim
17 words
Force/strain and structure-borne noise transducer according to claim 2 wherein said annular force sensor includes piezo-ceramic annuli.
Claim 7
Dependent Claim
22 words
Force/strain and structure-borne noise transducer according to claim 2 wherein said one sensor is a strain sensor of a surface strain transducer.
Claim 8
Dependent Claim
29 words
Force/strain and structure-borne noise transducer according to claim 2 wherein said one sensor is a strain sensor and said housing includes external threads to constitute a screw strain transducer.
Claim 9
Dependent Claim
40 words
Force/strain and structure-borne noise transducer according to claim 7 wherein said mounting surface is transverse to a main axis of the transducer and said strain sensor and said structure-borne noise sensor are sensitive along the main axis of the transducer.
Claim 10
Dependent Claim
43 words
Force/strain and structure-borne noise transducer according to claim 7 wherein said mounting surface is parallel to a main axis of the transducer said strain sensor and said structure-borne noise sensor are sensitive along an axis transverse to the main axis of the transducer.
Claim 11
Dependent Claim
34 words
Force/strain and structure-borne noise transducer according to claim 2 wherein said housing includes an integral threaded area and a thread nut for preloading said transducer between two surfaces of a machine to be monitored.
Claim 12
Dependent Claim
30 words
Force/strain and structure-borne noise transducer according to claim 2 wherein said housing includes an integral key plate, a separate mating key plate and a bracing screw between said key plates.
Claim 13
Dependent Claim
18 words
Force/strain and structure-borne noise transducer combination according to claim 1, wherein said structure-borne noise sensor has multi-axial sensitivity.
Claim 14
Dependent Claim
16 words
Force/strain and structure-borne noise transducer according to claim 1, wherein said structure-borne noise sensor is piezoelectric
Claim 15
Dependent Claim
16 words
Force/strain and structure-borne noise transducer according to claim 1, wherein said structure-borne noise sensor is piezoresistive.
Claim 16
Dependent Claim
16 words
Force/strain and structure-borne noise transducer according to claim 1 wherein said structure-borne noise sensor is capacitive.
Claim 17
Dependent Claim
22 words
Force/strain and structure-borne noise transducer according to claim 2, including impedance transformer/preamplifiers in said housing for providing separate signals from said sensors.
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) | 1995-12-08 | 1996-06-08 | 1996-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-12-08 | 2000-06-08 | 2000-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-12-08 | 2004-06-08 | 2004-12-08 | $7700.00 | Window Closed / Lapsed |