Patent US3677583A successfully refreshed from Google Patents.
US3677583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bushing and method of manufacturing
Assignee: Reliance Electric Co
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Filing: 1970-07-30
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Granted: 1972-07-18
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Expires: 1990-07-30
Abstract
Abstract A method of fabricating tapered bushings for use with hubs having a tapered internal wall corresponding to the external taper on the bushing, for use with securing screws inserted in holes intersecting the tapered surfaces. The method includes the steps of placing the blanks having the tapered surfaces together and drilling a single hole in the area of contact between the two blanks and tapping the hole while said blanks are in contact with one another. The hole may be drilled with the bushings facing in opposite directions to one another with the blanks facing in the same direction, in which flattened surfaces are provided on the two blanks at the point of contact with one another. The bushing having the foregoing configuration with the flattened surfaces also constitutes a part of the present concept.
Inventors
- 👤 Fred J Steinke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:46
CPC Classifications
F; F16; F16D; F16D1/00; F16D1/06; F16D1/08; F16D1/09; F16D1/093; F16D1/095; F16D1/096; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7047; Y10T403/7051; Y10T403/7052; Y10T403/7056; Y10T403/7058; Y10T403/7061; Y10T408/00; Y10T408/03
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
130 words
In a method of fabricating tapered bushings for use with hubs having a tapered internal wall corresponding to the external taper on the bushings for use with securing screws inserted in holes intersecting said tapered surfaces: the steps including forming two essentially identical metal blanks each having tapered external surfaces with a groove in the surface parallel with the axis of the blank, placing said blanks side-by-side with their peripheries in contact and their axes parallel with one another and with the grooves in juxtaposition to form a round hole intersecting the contacting surfaces, one half of said hole being in one of said blanks and the other half being in the other of said blanks, and threading said hole while said blanks are held in contact with one another.
Claim 2
Dependent Claim
130 words
In a method of fabricating tapered bushings for use with hubs having a tapered internal wall corresponding to the external taper on the bushings for use with securing screws inserted in holes intersecting said tapered surfaces: the steps including forming two essentially identical metal blanks each having tapered external surfaces with a groove in the surface parallel with the axis of the blank, placing said blanks side-by-side with their peripheries in contact and their axes parallel with one another and with the grooves in juxtaposition to form a round hole intersecting the contacting surfaces, one half of said hole being in one of said blanks and the other half being in the other of said blanks, and threading said hole while said blanks are held in contact with one another.
Claim 3
Dependent Claim
22 words
The method of fabricating tapered bushings as defined in claim 1 in which said threading step is performed by a tapping operation.
Claim 4
Dependent Claim
23 words
The method of fabricating tapered bushings as defined in claim 1 in which said threading step is performed by a thread rolling operatiOn.
Claim 5
Dependent Claim
104 words
In a method of fabricating tapered bushings for use with hubs having a tapered internal wall corresponding to the external taper on the bushings for use with securing screws inserted in holes intersecting said tapered surfaces: the steps including forming two essentially identical metal blanks each having tapered external surfaces, placing two of said blanks side-by-side with their peripheries in contact and their axes parallel with one another, forming a hole parallelling the axis of said blanks and intersecting the contacting surfaces, one half of said hole being in one of said blanks and the other half being in the other of said blanks.
Claim 6
Dependent Claim
104 words
In a method of fabricating tapered bushings for use with hubs having a tapered internal wall corresponding to the external taper on the bushings for use with securing screws inserted in holes intersecting said tapered surfaces: the steps including forming two essentially identical metal blanks each having tapered external surfaces, placing two of said blanks side-by-side with their peripheries in contact and their axes parallel with one another, forming a hole parallelling the axis of said blanks and intersecting the contacting surfaces, one half of said hole being in one of said blanks and the other half being in the other of said blanks.
Claim 7
Dependent Claim
37 words
The method of fabricating tapered bushings as defined in claim 4 in which the tapered surfaces of said blanks face in opposite directions and are held in contact with one another throughout substantially their full axial length.
Claim 8
Dependent Claim
24 words
The method of fabricating tapered bushings as defined in claim 4 in which said hole is threaded while said blanks are being held together.
Claim 9
Dependent Claim
40 words
The method of fabricating tapered bushings as defined in claim 6 in which said blanks are placed together with the tapered surfaces facing in the same direction and the area of contact between the two blanks is a flat surface.
Claim 10
Dependent Claim
108 words
In a method of fabricating tapered bushings for use with hubs having a tapered internal wall corresponding to the external taper on the bushings for use with securing screws inserted in holes intersecting said tapered surfaces: the steps including forming two metal blanks each having tapered external surfaces with a flat area parallel with the axis of the bushing, placing two of said tapered blanks together with the taper facing in the same direction and with the flat areas in face-to-face contact with one another, and forming a hole on a line with the plane of said contacting areas and parallel with the axis of the two bushings.
Claim 11
Dependent Claim
108 words
In a method of fabricating tapered bushings for use with hubs having a tapered internal wall corresponding to the external taper on the bushings for use with securing screws inserted in holes intersecting said tapered surfaces: the steps including forming two metal blanks each having tapered external surfaces with a flat area parallel with the axis of the bushing, placing two of said tapered blanks together with the taper facing in the same direction and with the flat areas in face-to-face contact with one another, and forming a hole on a line with the plane of said contacting areas and parallel with the axis of the two bushings.
Claim 12
Dependent Claim
26 words
The method of fabricating tapered bushings as defined in claim 8 in which is included the step of threading said hole while said blanks are together.
Claim 13
Dependent Claim
22 words
The method of fabricating tapered bushings as defined in claim 9 in which said hole is threaded substantially the full length thereof.
Claim 14
Dependent Claim
87 words
A bushing for use with hubs having a tapered internal wall for use with securing screws inserted in holes intersecting the tapered surface, comprising a frusto-conically shaped body having two screw receiving grooves substantially diametrically opposite to one another and in parallel relationship to the axis of the blank, a third groove disposed in a parallel relationship with the axis of the blank and having screw threads therein, and a flat surface parallel with the axis of the blank on either side of said last mentioned groove.
Claim 15
Dependent Claim
87 words
A bushing for use with hubs having a tapered internal wall for use with securing screws inserted in holes intersecting the tapered surface, comprising a frusto-conically shaped body having two screw receiving grooves substantially diametrically opposite to one another and in parallel relationship to the axis of the blank, a third groove disposed in a parallel relationship with the axis of the blank and having screw threads therein, and a flat surface parallel with the axis of the blank on either side of said last mentioned groove.
Claim 16
Dependent Claim
21 words
The bushing as defined in claim 11 in which said last mentioned groove extends substantially the full length of the bushing.
Claim 17
Dependent Claim
22 words
The bushing as defined in claim 12 in which said last mentioned groove contains screw threads throughout substantially the full length thereof.
Claim 18
Dependent Claim
29 words
The bushing as defined in claim 11 in which said body has a single slot extending axially through the body and positioned approximately equally between said first mentioned grooves.
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) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |