US3757613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple screwing system
Assignee: Fried Krupp AG
•
Filing: 1972-03-14
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Granted: 1973-09-11
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Expires: 1992-03-14
Abstract
Abstract A multiple screwing system, in which each individual screwing device has helical spring means associated therewith which surrounds one end portion of the individual housing surrounding the pertaining screw spindle, said helical spring means having one end portion connected to said individual housing and having its other end portion connecting to frame means common to and surrounding the individual housings, while the bearings for the individual housings are journalled in elastic supporting means permitting a slight radial displacement of said individual housings.
Inventors
- 👤 K Arndt
- 👤 H Nafe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:25
CPC Classifications
B; B25; B25B; B25B21/00; B25B21/002
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
146 words
A multiple screwing system, which includes: at least two individual screwing devices; supporting frame means common to and housing said individual screwing devices; each of said individual screwing devices comprising a housing, a screw spindle rotatably journalled within said housing, and means for driving said spindle; bearing means respectively associated with the end portions of each of said housings for rotatably supporting said housings; a plurality of helical spring means respectively associated with said housings and substantially coaxially surrounding the same; each of said spring means having one end portion connected to said supporting frame means and the other end portion connected to the pertaining housing; and supporting means of elastomeric material respectively mounted in said supporting frame means and supporting said bearing means to thereby permit a limited slight radial displacement of said housings and of said screw spindles relative to said supporting frame means.
Claim 2
Dependent Claim
146 words
A multiple screwing system, which includes: at least two individual screwing devices; supporting frame means common to and housing said individual screwing devices; each of said individual screwing devices comprising a housing, a screw spindle rotatably journalled within said housing, and means for driving said spindle; bearing means respectively associated with the end portions of each of said housings for rotatably supporting said housings; a plurality of helical spring means respectively associated with said housings and substantially coaxially surrounding the same; each of said spring means having one end portion connected to said supporting frame means and the other end portion connected to the pertaining housing; and supporting means of elastomeric material respectively mounted in said supporting frame means and supporting said bearing means to thereby permit a limited slight radial displacement of said housings and of said screw spindles relative to said supporting frame means.
Claim 3
Dependent Claim
18 words
A multiple screwing system according to claim 1, in which said elastomeric material consists of elastic rubber material.
Claim 4
Dependent Claim
49 words
A multiple screwing system according to claim 1, in which each screw spindle at one end portion thereof has connected thereto a screw head, and in which said helical spring means are respectively arranged at that end of the pertaining housing which is remote from the pertaining screw head.
Claim 5
Dependent Claim
24 words
A multiple screwing system according to claim 1, which includes fitting means interposed between said bearing means and said supporting means of elastomeric material.
References Cited (Backward Citations)
US2964152A
Cited
US3319494A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |