Patent US4015940A successfully refreshed from Google Patents.
US4015940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Holding device for laboratory ware
Assignee: INSTRUMENTS FOR RESEARCH AND INDUSTRY
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Filing: 1976-04-28
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Granted: 1977-04-05
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Expires: 1996-04-28
Abstract
Abstract A supporting device for laboratory containers, bottles, and the like which comprises a helical spring joined at its ends to form a torus-shaped body with several turns of said spring being loosely affixed to a base, thereby permitting expansion of said torus-shaped body when an object having a dimension greater than the central opening of the torus is inserted therein. Preferably said helical spring is wound to have substantially no compression and tension between turns, a natural frequency between 10 and 100 cycles per minute, and the spring wire is of a thin, rectangular cross-section with the long side directed radially.
Inventors
- 👤 Daniel R. Conlon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:25
CPC Classifications
B; B01; B01L; B01L9/00; B01L9/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
121 words
A supporting device for laboratory flasks and containers, bottles and the like which are relatively unstable on a flat surface which comprises a helical spring joined at its ends to form a torus-shaped body with several turns of said spring being loosely affixed to a base, thereby permitting expansion of said torus-shaped body when an object having a dimension greater than the central opening of the torus is inserted therein, wherein said helical spring is constructed of a thin wire having a rectangular cross-section with its long side directed radially relative to the helix and is wound to have no compression or tension between turns, and wherein the natural frequency of said spring is between 10 and 100 cycles per minute.
Claim 2
Dependent Claim
121 words
A supporting device for laboratory flasks and containers, bottles and the like which are relatively unstable on a flat surface which comprises a helical spring joined at its ends to form a torus-shaped body with several turns of said spring being loosely affixed to a base, thereby permitting expansion of said torus-shaped body when an object having a dimension greater than the central opening of the torus is inserted therein, wherein said helical spring is constructed of a thin wire having a rectangular cross-section with its long side directed radially relative to the helix and is wound to have no compression or tension between turns, and wherein the natural frequency of said spring is between 10 and 100 cycles per minute.
Claim 3
Dependent Claim
136 words
In combination, a laboratory container which is relatively unstable on a flat surface and a supporting device for said laboratory container surrounding and in contact with said container and holding it in a fixed position, said supporting device comprising a helical spring joined at its ends to form a torus-shaped body with several turns of said spring being loosely affixed to a base, said helical spring being constructed of a thin wire having a rectangular cross-section with its long side directed radially relative to the helix and being wound to have no compression or tension between turns, said helical spring having a natural frequency of between 10 and 100 cycles per minute, said container having a dimension, at its location of contact with said torus-shaped body, greater than the unexpanded central opening of said torus-shaped body.
Claim 4
Dependent Claim
136 words
In combination, a laboratory container which is relatively unstable on a flat surface and a supporting device for said laboratory container surrounding and in contact with said container and holding it in a fixed position, said supporting device comprising a helical spring joined at its ends to form a torus-shaped body with several turns of said spring being loosely affixed to a base, said helical spring being constructed of a thin wire having a rectangular cross-section with its long side directed radially relative to the helix and being wound to have no compression or tension between turns, said helical spring having a natural frequency of between 10 and 100 cycles per minute, said container having a dimension, at its location of contact with said torus-shaped body, greater than the unexpanded central opening of said torus-shaped body.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-04 | 1980-10-04 | 1981-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-04 | 1984-10-04 | 1985-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-04 | 1988-10-04 | 1989-04-05 | $7700.00 | Window Closed / Lapsed |