Patent US3785210A successfully refreshed from Google Patents.
US3785210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balancing apparatus for balancing out-of-balance bodies
Assignee: Gebr Hofmann GmbH and Co KG Maschinenfabrik
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Filing: 1972-02-03
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Granted: 1974-01-15
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Expires: 1992-02-03
Abstract
Abstract An apparatus for balancing a body such as a motor vehicle wheel in two balancing planes whereby a driving shaft is supported by two separated bearings, one movable and the other immovable and, each having a force measuring device associated with it for each measuring the force which the shaft applies to its associated bearing. The force measuring devices are connected via suitable resistances to a two position switch which in turn is connected to an indicator for displaying imbalance. The switch has a first position connecting both force measuring devices to the indicator so that, when the body is mounted with one of the planes coinciding with the immovable bearing, the indicator displays the imbalance in that plane after imbalance in the other plane has been corrected. The second switch position connects only the force measuring device associated with the movable bearing to the indicator so that, when the body is mounted with the one of the planes coinciding with the immovable bearing, the indicator displays the imbalance in that other plane.
Inventors
- 👤 R Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:54
CPC Classifications
G; G01; G01M; G01M1/00; G01M1/02; G01M1/04; G01M1/045; G01M1/14; G01M1/16; G01M1/22; G01M1/225
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
224 words
Apparatus for balancing an out-of-balance body in two balancing planes, comprising: a drive shaft for carrying the body to be balanced; a first bearing supporting the drive shaft and being in the form of a radially immovable swing bearing supported by a rigid force-measuring element; a radially movable second bearing supporting the shaft and being supported by a second rigid force-measuring element and a spring; means for mounting the body to be balanced on the drive shaft so as to permit the body to be displaced in the axial direction of the shaft and then locked thereto in a position such that a first of the balancing planes coincides with the first bearing; measuring and indicator means; and switch means for connecting the measuring and indicator means selectively to the second force-measuring element or to the first and second force-measuring elements in parallel, the arrangement being such that in operation in a first measuring run the second force-measuring element is connected by the switch means to the measuring and indicator means whereby the balance in the second balancing plane can be determined, and then corrected, and in a second measuring run the first forcemeasuring element and the second force-measuring element are connected in parallel by the switch means to the measuring and indicator means, thereby to determine the unbalance in the first measuring plane.
Claim 2
Dependent Claim
224 words
Apparatus for balancing an out-of-balance body in two balancing planes, comprising: a drive shaft for carrying the body to be balanced; a first bearing supporting the drive shaft and being in the form of a radially immovable swing bearing supported by a rigid force-measuring element; a radially movable second bearing supporting the shaft and being supported by a second rigid force-measuring element and a spring; means for mounting the body to be balanced on the drive shaft so as to permit the body to be displaced in the axial direction of the shaft and then locked thereto in a position such that a first of the balancing planes coincides with the first bearing; measuring and indicator means; and switch means for connecting the measuring and indicator means selectively to the second force-measuring element or to the first and second force-measuring elements in parallel, the arrangement being such that in operation in a first measuring run the second force-measuring element is connected by the switch means to the measuring and indicator means whereby the balance in the second balancing plane can be determined, and then corrected, and in a second measuring run the first forcemeasuring element and the second force-measuring element are connected in parallel by the switch means to the measuring and indicator means, thereby to determine the unbalance in the first measuring plane.
Claim 3
Dependent Claim
47 words
Apparatus according to claim 1 wherein the spring is relatively hard and is so adjusted that in operation the resonance frequency of the swing movement about the first swing bearing, together with the body to be balanced, lies above the speed of rotation of the drive shaft.
Claim 4
Dependent Claim
53 words
Apparatus according to claim 1 further including a first step switch with a plurality of resistors to control the sensitivity of the measuring and indicator means and to take account of the spacing of the first and second balancing planes, which first step switch can be cut out during the second measuring run.
Claim 5
Dependent Claim
28 words
Apparatus according to claim 3 wherein said resistors are connected in series between the second force-measuring element of the radially movable bearing and the measuring and indicator means.
Claim 6
Dependent Claim
45 words
Apparatus according to claim 1 further including a first potentiometer to control the sensitivity of the measuring and indicator means and to take account of the spacing of the first and second balancing planes, which potentiometer can be cut out during the second measuring run.
Claim 7
Dependent Claim
57 words
Apparatus according to claim 1 further including a second step switch with a plurality of resistors or a second potentiometer, to take account of the balancing radius of the first and second balancing planes and for direct indication of the magnitude of unbalance in grams or in another suitable weight unit at the measuring and indicator means.
Claim 8
Dependent Claim
22 words
Apparatus according to claim 1 wherein the first bearing is pressed into frictional engagement with the first force-measuring element by a spring.
Claim 9
Independent Claim
190 words
An apparatus for balancing a body in two balancing planes comprising: a drive shaft, means for mounting said body on said shaft so that said body is axially displaceable along said shaft, a first radially immovable bearing supporting said shaft, first force-measuring means associated with said first bearing for measuring the force applied by said shaft to said first bearing, a second radially movable bearing supporting said shaft, second force-measuring means associated with said second bearing for measuring the force applied by said shaft to said second bearing, means for indicating imbalance, and switch means connecting said first and second force-measuring meaNs to said indicating means having a first position connecting both said first and second force-measuring means to said indicating means so as to indicate the imbalance in one of said planes when said body is mounted so that said one plane coincides with said first bearing and a second position connecting only said second force measuring means to said indicating means so as to indicate the imbalance in the other of said plane when said body is mounted so that said one plane coincides with said first bearing.
Claim 10
Independent Claim
190 words
An apparatus for balancing a body in two balancing planes comprising: a drive shaft, means for mounting said body on said shaft so that said body is axially displaceable along said shaft, a first radially immovable bearing supporting said shaft, first force-measuring means associated with said first bearing for measuring the force applied by said shaft to said first bearing, a second radially movable bearing supporting said shaft, second force-measuring means associated with said second bearing for measuring the force applied by said shaft to said second bearing, means for indicating imbalance, and switch means connecting said first and second force-measuring meaNs to said indicating means having a first position connecting both said first and second force-measuring means to said indicating means so as to indicate the imbalance in one of said planes when said body is mounted so that said one plane coincides with said first bearing and a second position connecting only said second force measuring means to said indicating means so as to indicate the imbalance in the other of said plane when said body is mounted so that said one plane coincides with said first bearing.
Claim 11
Dependent Claim
43 words
Apparatus as in claim 8 further including resistive means connecting said first and second force-measuring means to said switch means and having values so as to compensate for the difference in distance from said other measuring plane to said first and second bearings.
Claim 12
Independent Claim
244 words
A method of balancing a body in two balancing planes with an apparatus having: a drive shaft, means for mounting said body on said shaft so that said body is axially displaceable along said shaft, a first radially immovable bearing supporting said shaft, first force measuring means associated with said first bearing for measuring the force applied by said shaft to said first bearing, a second radially movable bearing supporting said shaft, second force-measuring means associated with said second bearing for measuring the force applied by said shaft to said second bearing, means for indicating imbalance, and switch means connecting said first and second force-measuring means to said indicating means having a first position connecting both said first and second force-measuring means to said indicating means so as to indicate the imbalance in one of said planes when said body is mounted so that said one plane coincides with said first bearing and a second position connecting only said second force-measuring means to said indicating means so as to indicate the imbalance in the other of said plane when said body is mounted so that said one plane coincides with said first bearing, comprising the steps of: mounting said body on said shaft so that said one plane coincides with said first bearing, measuring said imbalance in said one plane with said switch means in said first position, and measuring said imbalance in said other plane with said switch means in said second position.
Claim 13
Independent Claim
244 words
A method of balancing a body in two balancing planes with an apparatus having: a drive shaft, means for mounting said body on said shaft so that said body is axially displaceable along said shaft, a first radially immovable bearing supporting said shaft, first force measuring means associated with said first bearing for measuring the force applied by said shaft to said first bearing, a second radially movable bearing supporting said shaft, second force-measuring means associated with said second bearing for measuring the force applied by said shaft to said second bearing, means for indicating imbalance, and switch means connecting said first and second force-measuring means to said indicating means having a first position connecting both said first and second force-measuring means to said indicating means so as to indicate the imbalance in one of said planes when said body is mounted so that said one plane coincides with said first bearing and a second position connecting only said second force-measuring means to said indicating means so as to indicate the imbalance in the other of said plane when said body is mounted so that said one plane coincides with said first bearing, comprising the steps of: mounting said body on said shaft so that said one plane coincides with said first bearing, measuring said imbalance in said one plane with said switch means in said first position, and measuring said imbalance in said other plane with said switch means in said second position.
References Cited (Backward Citations)
GB964937A
Cited
US3605502A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |