US3700271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spacer ring
Assignee: Bosch Rexroth AG
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Filing: 1971-04-08
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Granted: 1972-10-24
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Expires: 1991-04-08
Abstract
Abstract A tubular spacer ring for frictionally fastening a shaft in the oversized bore of a machine element is bent from a strip of embossed sheet metal having several circumferential rows of axially elongated projections on one face and corresponding recesses in the other face. The projections have a preferred axial length of 5-8 times their radial height, and must have a length of 3-10 times the height. The projections are identical and uniformly distributed in each row, but the rows are circumferentially offset by a fraction of the center-to-center spacing of the projections in each row.
Inventors
- 👤 Gunter Blaurock
- 👤 Hans Stender
- 👤 Werner Will
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:25
CPC Classifications
F; F16; F16D; F16D1/00; F16D1/06; F16D1/08; F16D1/0829; F16D1/0835; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7047; Y10T403/7061
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
128 words
In a spacer ring of sheet metal having substantially uniform thickness, the ring having approximately cylindrical inner and outer faces, the improvement which comprises: a. said ring having respective pluralities of axially alternating first and second sections bounded by radial planes, b. each first section being formed with a row of integral projections in one of said faces and a corresponding row of recesses in the other face, c. said projections and recesses being axially elongated and circumferentially aligned in each row in spaced relationship, d. the axial length of each projection being three to 10 times the radial height of said projection, e. said second sections being substantially cylindrical and free from said projections anD recesses and respective second sections being axially interposed between said first sections.
Claim 2
Dependent Claim
128 words
In a spacer ring of sheet metal having substantially uniform thickness, the ring having approximately cylindrical inner and outer faces, the improvement which comprises: a. said ring having respective pluralities of axially alternating first and second sections bounded by radial planes, b. each first section being formed with a row of integral projections in one of said faces and a corresponding row of recesses in the other face, c. said projections and recesses being axially elongated and circumferentially aligned in each row in spaced relationship, d. the axial length of each projection being three to 10 times the radial height of said projection, e. said second sections being substantially cylindrical and free from said projections anD recesses and respective second sections being axially interposed between said first sections.
Claim 3
Dependent Claim
20 words
In a ring as set forth in claim 1, said axial length being between five to eight times said height.
Claim 4
Dependent Claim
50 words
In a ring as set forth in claim 2, the two axially terminal portions of said ring being constituted by respective second sections, the axial width of each second section axially interposed between two first sections being approximately twice the axial width of each of said axially terminal second sections.
Claim 5
Dependent Claim
24 words
In a ring as set forth in claim 2, said projections being substantially uniformly distributed in each row over the circumference of said ring.
Claim 6
Dependent Claim
33 words
In a ring as set forth in claim 4, said projections in said rows being substantially identical and uniformly spaced, the axial width of each second section being smaller than said axial length.
Claim 7
Dependent Claim
17 words
In a ring as set forth in claim 5, the projections in each row being axially aligned.
Claim 8
Dependent Claim
32 words
In a ring as set forth in claim 4, the projections in each row being circumferentially offset from the projections in each axially adjacent row, the offset being smaller than said spacing.
Claim 9
Dependent Claim
24 words
In a ring as set forth in claim 7, said offset being approximately equal to said spacing divided by the number of said rows.
Claim 10
Dependent Claim
18 words
In a ring as set forth in claim 7, said offset being approximately one quarter of said spacing.
Claim 11
Dependent Claim
19 words
In a ring as set forth in claim 1, said second sections being free from all projections and recesses.
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) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |