US3815425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for wheel balancing
Assignee: Individual
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Filing: 1972-10-24
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Granted: 1974-06-11
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Expires: 1992-10-24
Abstract
Abstract Apparatus is provided to effect a static and dynamic balance of a pneumatic tire and wheel combination in place on a vehicle or on a test stand. The technique involves measuring vibrations which occur on the mounting axle extended in at least two directions substantially 90* displaced from each other, translating the vibrations into usable information to indicate the position and the amount of weight that should be added to the tire rim combination to achieve a balancing to reduce the vibrations to below predetermined minimum requirements. The axial extension can be of variable length, but preferably in firm abutting relationship to the actual mounting axle of the wheel so that vibrations are accurately transferred to the axle extension. The wheel is spun up to a desired rotating speed to achieve the vibration measurements desired. Typical measurement systems might include a motion analyzer with magnetically attached transducers, or a unique electrical circuit combination with a strobe light to indicate the place and amount of weight necessary to achieve a proper balance.
Inventors
- 👤 F Skidmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:28
CPC Classifications
G; G01; G01M; G01M1/00; G01M1/14; G01M1/16; G01M1/28
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
177 words
Apparatus to effect balancing of a axle mounted pneumatic tire and rim combination said combination mounted so as to be rotatable with movement of the combination perpendicular to the axis of rotation limited to one plane which includes the axis of rotation, and wobble movement of the axle limited to a second plane which includes the axis of rotation substantially at 90* to said one plane, which includes a. means to spin the tire-rim combination at a predetermined speed, b. means to measure the vibration of the axle during spinning of the combination, and c. means to utilize the vibration measurement information to determine the amount and position of weight necessary to attach to the tire-rim combination to counterbalance the combination where the means to measure vibration includes an axle extension rod mounted in axially aligned relation to the axle And extending axially outwardly from the tire-rim combination, where the means to measure vibration measures the vibration of the extension rod in at least one of said planes of substantially 90* displacement with respect to the other.
Claim 2
Dependent Claim
177 words
Apparatus to effect balancing of a axle mounted pneumatic tire and rim combination said combination mounted so as to be rotatable with movement of the combination perpendicular to the axis of rotation limited to one plane which includes the axis of rotation, and wobble movement of the axle limited to a second plane which includes the axis of rotation substantially at 90* to said one plane, which includes a. means to spin the tire-rim combination at a predetermined speed, b. means to measure the vibration of the axle during spinning of the combination, and c. means to utilize the vibration measurement information to determine the amount and position of weight necessary to attach to the tire-rim combination to counterbalance the combination where the means to measure vibration includes an axle extension rod mounted in axially aligned relation to the axle And extending axially outwardly from the tire-rim combination, where the means to measure vibration measures the vibration of the extension rod in at least one of said planes of substantially 90* displacement with respect to the other.
Claim 3
Dependent Claim
54 words
Apparatus according to claim 1 where the means to measure vibration comprises a base removably attached to the rod, at least one spring substantially axially aligned attached to the base, said spring tuned to vibrate at a frequency corresponding to the number or a multiple of the number of rotation of the tire-rim combination.
Claim 4
Dependent Claim
54 words
Apparatus according to claim 1 where the means to measure vibration comprises a measuring block attached to the rod and having at least one horizontal surface and one vertical surface and separately mounted dial indicator means cooperating with said horizontal and vertical block surfaces to measure vertical and horizontal movement of said surfaces respectively.
Claim 5
Dependent Claim
54 words
Apparatus according to claim 1 where the means to measure vibration comprises a measuring block attached to the rod and having at least one horizontal surface and one vertical surface, and separately mounted electrical contact means cooperating with said horizontal and vertical block surfaces to measure vertical and horizontal movement of said surfaces respectively.
Claim 6
Dependent Claim
55 words
Apparatus according to claim 1 where the means to measure vibration comprises a measuring block attached to the rod and having at least one horizontal surface and one vertical surface, and transducer means magnetically attached to and cooperating with said horizontal and vertical block surfaces to measure vertical and horizontal movement of said surfaces respectively.
Claim 7
Dependent Claim
50 words
Apparatus according to claim 5 where the means to utilize includes a motion analyzer actuated by signals from the transducers to determine weight requirements, and a strobe light directed toward the tire-rim combination driven by the analyzer to indicate the position on the combination that the weight should be attached.
Claim 8
Dependent Claim
39 words
Apparatus according to claim 1 where the means to utilize comprises a strobe light directed toward the tire-rim combination and driven by the means to measure to indicate the position on the combination that the weight should be attached.
Claim 9
Dependent Claim
68 words
Apparatus according to claim 7 where the means to measure vibration comprises a measuring block attached to the rod and having at least one horizontal surface and one vertical surface, separately mounted electrical contact means cooperating with said horizontal and vertical block surfaces to measure vertical and horizontal movement of said surfaces respectively, and electrical power means actuated by the electrical contact means to drive the strobe light.
Claim 10
Dependent Claim
193 words
Apparatus to determine the amount and position of weight necessary to effect balancing of an axle mounted pneumatic tire and rim combination said combination mounted so as to be rotatable with movement of the combination perpendicular to the axis of rotation limited to one plane that includes the axis of rotation, and wobble movement of the axle limited to a second plane that includes the axis of rotation substantially at 90* to said one plane, which includes, rod means axially mounted to and extending outwardly from the axle to provide an axle extension, means to spin the combination, means to measure movement of the rod means in said one and second planes at a preselected axial distance from the tire-rim combination mounting to the axle, means to coordinate the movement of the rod means with relation to the rotation of the tire and rim combination to determine the circumferential position of the tire and rim combination causing the movement, and means to determine the distance of movement of the rod means in said one and second planes which distance represents weight needed to counterbalance the dynamic and static unbalance of the tire-rim combination.
Claim 11
Dependent Claim
193 words
Apparatus to determine the amount and position of weight necessary to effect balancing of an axle mounted pneumatic tire and rim combination said combination mounted so as to be rotatable with movement of the combination perpendicular to the axis of rotation limited to one plane that includes the axis of rotation, and wobble movement of the axle limited to a second plane that includes the axis of rotation substantially at 90* to said one plane, which includes, rod means axially mounted to and extending outwardly from the axle to provide an axle extension, means to spin the combination, means to measure movement of the rod means in said one and second planes at a preselected axial distance from the tire-rim combination mounting to the axle, means to coordinate the movement of the rod means with relation to the rotation of the tire and rim combination to determine the circumferential position of the tire and rim combination causing the movement, and means to determine the distance of movement of the rod means in said one and second planes which distance represents weight needed to counterbalance the dynamic and static unbalance of the tire-rim combination.
Claim 12
Dependent Claim
68 words
Apparatus according to claim 9 which includes means mounting the rod Means in resilient abutting non-affixed relation to the axle, said rod means having a pointed end, and said axle having a machined hole on the axis of rotation thereof receiving the pointed end of the rod means with the longitudinal axis of the rod means coincident with the axis of rotation of the tire and rim combination.
Claim 13
Dependent Claim
40 words
Apparatus according to claim 10 where the resilient mounting means for the rod is a fixed vertically directed stand, a sleeve slidably mounted on the stand, and a rubber cushion inside the sleeve through which the rod is supportably received.
Claim 14
Dependent Claim
59 words
Apparatus according to claim 10 where the means to determine the distance of movement of the rod means comprises a measuring block attached to the rod having at least one horizontal surface and one vertical surface and dial indicator means cooperating with said horizontal and vertical block surfaces to measure the vertical and horizontal movement of said surfaces respectively.
Claim 15
Dependent Claim
51 words
Apparatus according to claim 12 where said means to measure vibration is mounted to the means mounting the rod means, and includes separately mounted electrical contact means cooperating with said horizontal and vertical block surfaces, and means to control the spaced distances of said electrical contact means from said block surfaces.
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) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |