Patent EP0140334A2 successfully refreshed from Google Patents.
EP0140334A2
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Accelerometer
Assignee: Honeywell Inc
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Filing: 1984-10-24
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Granted: —
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Expires: 2004-10-24
Abstract
Abstract An accelerometer comprises a sheet (20) of silicon configured as an inertia plate (11) separate from a support plate (12) except at a pair of flexure sites (13, 14) spaced along an axis. Each flexure site includes a pair of flexures (31,33;32,34) mutually offset so that upon acceleration in a direction perpendicular to the inertia plate the flexures partake of compound bending. Stress responsive resistors (40-43) are positioned on said flexures so that upon compound bending the resistors change resistance in the opposite sense (Figure 1).
Inventors
- 👤 Vernon H. Aske
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 14:45
CPC Classifications
G; G01; G01P; G01P15/00; G01P15/02; G01P15/08; G01P15/12; G01P15/123; G01P15/0802
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
55 words
An accelerometer, characterized b y a sheet (20) of silicon configured as an inertia plate (11) separate from a support plate (12) except at a pair of flexure sites (13,14) spaced along an axis, and strain responsive resistors (40-43) at said flexures positioned so that upon bending the resistors change resistance in the opposite sense.
Claim 2
Dependent Claim
55 words
An accelerometer, characterized b y a sheet (20) of silicon configured as an inertia plate (11) separate from a support plate (12) except at a pair of flexure sites (13,14) spaced along an axis, and strain responsive resistors (40-43) at said flexures positioned so that upon bending the resistors change resistance in the opposite sense.
Claim 3
Dependent Claim
39 words
An accelerometer according to claim 1, characterized in that each flexure site -(13,14)-includes a pair of flexures .(31,33:32,34) mutually offset so that upon acceleration in a direction perpendicular to the inertia plate (11) the flexures partake of compund bending.
Claim 4
Dependent Claim
24 words
An accelerometer according to claim 2, characterized in that the strain responsive resistors (40-43) are provided at the same surface of the flexures (31,32).
Claim 5
Dependent Claim
98 words
An accelerometer according to claim 2 or 3, characterized by at least one pair of strain responsive resistors (40,41;42,43) carried by one surface of at least one of said flexures (31,32) and positioned so that upon said compound bending the resistances of each pair (40,41;42,43) are subject to physical strains of opposite senses, while upon accelerations in directions orthogonal to said input acceleration both resistors of said pair are subject to physical strains in the same sense; and means electrically interconnecting said resistors to give an output which varies with differential changes in the resistances of said resistors.
Claim 6
Dependent Claim
18 words
An accelerometer according to claim 4, characterized in that the resistors (40-43) are interconnected in a bridge circuit.
Claim 7
Dependent Claim
60 words
An accelerometer according to one of the preceding claims, characterized in that the inertia plate (11) is continuous with the support plate (12) at the flexure sites (13,14) spaced along a flexure axis and each flexure site includes an inward flexure (33,34) and an outward flexure (31,32) mutually offset in a direction parallel to the plane of the plate (11,12).
Claim 8
Dependent Claim
36 words
An accelerometer according to one of the preceding claims, characterized in that two pairs of strain responsive resistors (40,41;42,43) interconnected in a resistance bridge circuit are provided on one flexure (31,32) of each flexure site (13,14).
Claim 9
Dependent Claim
29 words
An accelerometer according to one of the preceding claims, characterized b y means (18) provided on the inertia plate (11) for applying a rebalancing force to the inertia plate.
Claim 10
Dependent Claim
46 words
An accelerometer according to one of the preceding claims, characterized in that the support plate (12) is U-shaped with the flexure sites (13,14) provided at the cross-bar of the U-form and that the inertia plate (11) filles the space between the side bars of the U-form.
References Cited (Backward Citations)
No citation records indexed.
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