US3743334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interlocking assembly and method of making same
Assignee: Individual
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Filing: 1971-01-08
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Granted: 1973-07-03
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Expires: 1991-01-08
Abstract
Abstract A method of interlocking two elements comprises providing an inner element, an outer element capable of surrounding the inner element and locating at least part of the inner element therein. At least the internal dimensions of said outer element are caused to decrease whereby an internal surface thereof is pressed against said inner element to define cooperating surfaces. At least one of said cooperating surfaces is provided with longitudinal splines and thus is sufficiently hard to produce complementary splines in the other cooperating surface. Also, at least one of said cooperating surfaces is provided with a surface interruption extending across the direction of said splines, and being sufficiently hard and suitably shaped produces a complementary interruption in the other cooperating surface. Hence the assembled elements are secured against both longitudinal and rotational relative displacement.
Inventors
- 👤 Adelman R Witsenhausen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:56
CPC Classifications
F; F16; F16B; F16B17/00; F16B17/004; F16D; F16D1/00; F16D1/02; F16D1/027; F16D1/06; F16D1/064; F16D1/072; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49925; Y10T29/49927; Y10T29/49929; Y10T403/00; Y10T403/49; Y10T403/4966
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
139 words
A method of interlocking two elements comprising: providing an inner element; providing an outer element capable of surrounding the inner element and locating at least part of the inner element therein; causing at least the internal dimensions of said outer element to decrease whereby an internal surface thereof is pressed against said inner element to define cooperating surfaces; at least one of said cooperating surfaces being provided with longitudinal splines and being sufficiently hard to produce complementary splines in the other cooperating surface; at least one of said cooperating surfaces being provided with a helicoidal surface interruption extending across the direction of said splines and deeper than said splines, and being sufficiently hard and suitably shaped to produce a complementary interruption in the other cooperating surface; whereby the assembled elements are secured against both longitudinal and rotational relative displacement.
Claim 2
Independent Claim
139 words
A method of interlocking two elements comprising: providing an inner element; providing an outer element capable of surrounding the inner element and locating at least part of the inner element therein; causing at least the internal dimensions of said outer element to decrease whereby an internal surface thereof is pressed against said inner element to define cooperating surfaces; at least one of said cooperating surfaces being provided with longitudinal splines and being sufficiently hard to produce complementary splines in the other cooperating surface; at least one of said cooperating surfaces being provided with a helicoidal surface interruption extending across the direction of said splines and deeper than said splines, and being sufficiently hard and suitably shaped to produce a complementary interruption in the other cooperating surface; whereby the assembled elements are secured against both longitudinal and rotational relative displacement.
Claim 3
Independent Claim
110 words
A method of interlocking two elements, comprising: providing a rod-like inner element; providing a tubular outer element and locAting at least part of the rod-like element therein; compressing the tubular outer element over the rod-like inner element whereby the internal surface thereof is pressed against said inner element to define cooperating surfaces; the cooperating inner element surface being provided with longitudinal splines and with at least one helicoidal surface interruption extending across the splines and deeper than said splines, and being sufficiently hard and suitably shaped to produce a complementary interruption in the cooperating out element internal surface; whereby the assembled elements are secured against both longitudinal and rotational displacement.
Claim 4
Independent Claim
110 words
A method of interlocking two elements, comprising: providing a rod-like inner element; providing a tubular outer element and locAting at least part of the rod-like element therein; compressing the tubular outer element over the rod-like inner element whereby the internal surface thereof is pressed against said inner element to define cooperating surfaces; the cooperating inner element surface being provided with longitudinal splines and with at least one helicoidal surface interruption extending across the splines and deeper than said splines, and being sufficiently hard and suitably shaped to produce a complementary interruption in the cooperating out element internal surface; whereby the assembled elements are secured against both longitudinal and rotational displacement.
Claim 5
Dependent Claim
19 words
A process as claimed in claim 1 wherein the surface interruption is a groove and forms a complementary fin.
Claim 6
Dependent Claim
19 words
A process as claimed in claim 1 wherein the surface interruption is a projection and forms a complementary groove.
Claim 7
Dependent Claim
19 words
A process as claimed in claim 3 wherein the groove extends completely around one surface of the inner element.
Claim 8
Dependent Claim
101 words
An assembly of an inner element and a surrounding outer element which are pressed together to define cooperating surfaces with at least one of said cooperating surfaces being provided with longitudinal splines and being sufficiently hard to produce complementary splines in the other cooperating surface; at least one of said cooperating surfaces being provided with a surface helicoidal interruption extending across the direction of said splines and deeper than said splines, and being sufficiently hard and suitably shaped to produce a complementary interruption in the other cooperating surface; whereby the assembled elements are secured against both longitudinal and rotational relative displacement.
Claim 9
Dependent Claim
101 words
An assembly of an inner element and a surrounding outer element which are pressed together to define cooperating surfaces with at least one of said cooperating surfaces being provided with longitudinal splines and being sufficiently hard to produce complementary splines in the other cooperating surface; at least one of said cooperating surfaces being provided with a surface helicoidal interruption extending across the direction of said splines and deeper than said splines, and being sufficiently hard and suitably shaped to produce a complementary interruption in the other cooperating surface; whereby the assembled elements are secured against both longitudinal and rotational relative displacement.
Claim 10
Dependent Claim
44 words
An assembly as claimed in claim 6, said interruption being a helicoidal groove that extends continuously in a plurality of turns about said inner element and that interrupts said splines thereby to divide each of said splines into a plurality of longitudinally aligned portions.
Claim 11
Dependent Claim
20 words
An assembly as claimed in claim 7, said groove having a width greater than the width of a said spline.
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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |