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US3854216A Expired / Lapsed US ⏱️ 0.0 years remaining

Disc brake tool

Assignee: Owatonna Tool Co
•
Filing: 1973-05-14
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Granted: 1974-12-17
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Expires: 1993-05-14
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Abstract

Abstract A disc brake tool for checking a disc brake rotor for thickness variations and lateral run-out having a gauge leg of L-shape carrying an indicator gauge and with use of the gauge leg in one position to check rotor thickness variations and with the gauge leg in a second position being mounted by a gauge arm to a spindle rotatably mounting the rotor for checking of lateral runout.

Inventors

  • 👤 C Mosher

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 20:22
CPC Classifications
G; G01; G01B; G01B5/00; G01B5/02; G01B5/06

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 99 words
A disc brake tool for checking a disc brake rotor for thickness variations and lateral run-out comprising, a gauge arm mountable to a spindle supporting said rotor, a gauge leg carrying an indicator gauge, means on said gauge leg coacting with said gauge arm to mount the gauge leg and indicator gauge in position to check lateral run-out, and additional plane establishing means on said gauge leg to position the gauge leg and indicator gauge independently of the gauge arm wIth the gauge leg parallel to a face of the brake rotor for checking the rotor for thickness variations.
Claim 2
Dependent Claim 99 words
A disc brake tool for checking a disc brake rotor for thickness variations and lateral run-out comprising, a gauge arm mountable to a spindle supporting said rotor, a gauge leg carrying an indicator gauge, means on said gauge leg coacting with said gauge arm to mount the gauge leg and indicator gauge in position to check lateral run-out, and additional plane establishing means on said gauge leg to position the gauge leg and indicator gauge independently of the gauge arm wIth the gauge leg parallel to a face of the brake rotor for checking the rotor for thickness variations.
Claim 3
Dependent Claim 58 words
A disc brake tool as defined in claim 1 wherein said gauge arm has an offset section with an elongate slot extending lengthwise thereof, and means for holding the gauge leg and indicator gauge at varying positions lengthwise of said elongate slot whereby the position of the indicator gauge radially of the disc brake rotor may be varied.
Claim 4
Dependent Claim 47 words
A disc brake tool as defined in claim 1 wherein said gauge leg is an L-shape planar member with a pair of leg sections, one of said leg sections carrying said indicator gauge and the other leg section having both said mounting means and said additional means.
Claim 5
Dependent Claim 39 words
A disc brake tool as defined in claim 3 wherein said additional plane establishing means includes three projections engageable with a face of the disc brake rotor to place said other leg section in parallel relation with said face.
Claim 6
Dependent Claim 86 words
A disc brake tool for checking a disc brake rotor having opposite faces comprising, a gauge leg having an L-shape with leg sections at right angles, means on one leg section to engage one face of the rotor at three triangularly related points to have said one leg section parallel with said one face, an indicator gauge, and means on said other leg section adjustably mounting said indicator gauge for positioning relative to the other rotor face and along a line normal to said one face.
Claim 7
Dependent Claim 86 words
A disc brake tool for checking a disc brake rotor having opposite faces comprising, a gauge leg having an L-shape with leg sections at right angles, means on one leg section to engage one face of the rotor at three triangularly related points to have said one leg section parallel with said one face, an indicator gauge, and means on said other leg section adjustably mounting said indicator gauge for positioning relative to the other rotor face and along a line normal to said one face.
Claim 8
Dependent Claim 79 words
A disc brake tool as defined in claim 5 wherein said gauge leg is formed of planar materal, said adjustable mounting means includes an angle bar having a planar leg abutting said other leg section and mounting said indicator gauge, an elongate slot in said other leg section extending lengthwise thereof and a knob screw extended through said slot and threaded into said planar leg whereby the angle bar may be adjustably positioned lengthwise of said other leg section.
Claim 9
Dependent Claim 69 words
A disc brake tool as defined in claim 5 wherein said one leg section of the gauge leg has an opening therethrough, a gauge arm mountable to a spindle supporting the disc brake rotor, and means for mounting the gauge leg to the gauge arm with the gauge leg posititioned to place said one leg section on the same side of the disc brake rotor as the indicator gauge.
Claim 10
Dependent Claim 177 words
A disc brake tool for checking a disc brake rotor for thickness variations and lateral run-out comprising, a gauge arm mountable to a spindle supporting said rotor and having a pair of parallel parts with an offset therebetween, one of said parts being mounted to said spindle and the other part extending radially of the spindle and at a greater distance from said rotor than said one part, a gauge leg having an L-shape with a pair of leg sections normal to each other, an indicator gauge, means for adjustably mounting said indicator gauge to one of said leg sections with the stem of said gauge normal to a face of said rotor, first means on the other leg section of said gauge leg for removably attaching said gauge leg to said other part of the gauge arm, and second means on said other leg section for engaging a face of said rotor opposite from said first mentioned face to locate said stem normal to said rotor faces independently of and without attachment to said gauge arm.
Claim 11
Dependent Claim 177 words
A disc brake tool for checking a disc brake rotor for thickness variations and lateral run-out comprising, a gauge arm mountable to a spindle supporting said rotor and having a pair of parallel parts with an offset therebetween, one of said parts being mounted to said spindle and the other part extending radially of the spindle and at a greater distance from said rotor than said one part, a gauge leg having an L-shape with a pair of leg sections normal to each other, an indicator gauge, means for adjustably mounting said indicator gauge to one of said leg sections with the stem of said gauge normal to a face of said rotor, first means on the other leg section of said gauge leg for removably attaching said gauge leg to said other part of the gauge arm, and second means on said other leg section for engaging a face of said rotor opposite from said first mentioned face to locate said stem normal to said rotor faces independently of and without attachment to said gauge arm.
Claim 12
Dependent Claim 21 words
A disc brake tool as defined in claim 8 wherein said second means includes three projections on said other leg section.

References Cited (Backward Citations)

US1891185A Cited
US3618219A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-12-16 1978-06-17 1978-12-17 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-12-16 1982-06-17 1982-12-17 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-12-16 1986-06-17 1986-12-17 $7700.00 Window Closed / Lapsed

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