Patent US3561630A successfully refreshed from Google Patents.
US3561630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spurt cap
Assignee: Individual
•
Filing: 1969-01-27
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Granted: 1971-02-09
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Expires: 1989-01-27
Abstract
Abstract A spurt cap for use with test tubes is provided. It is hollow, open bottomed and has top closure. A spring clip is attached to its bottom edge which clamps it over the test tube mouth. A transverse screen extends across its interior to slow down the movement of fluid spurting out of the tube.
Inventors
- 👤 Seth Morris Smedstad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:37
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/50; B01L3/508; B01L3/5082; B01L3/50825
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
109 words
A spurt cap, adapted to be detachably secured to a test tube having a lip, comprising: an open-buttomed cap, having a sidewall and top closure, defining a cavity; a flexible lug comprised of a downwardly directed extension of a portion of the rear sidewall; and a horizontal spring clip mounteD on the lug in spaced relation below the lower edge of the sidewall, said clip having spaced, forwardly projecting, resilient arms defining a gap between their forward ends whereby they are adapted to be snapped onto a test tube to position the cap over the mouth of the test tube whereby the cavity substantially overlies the test tube lip.
Claim 2
Dependent Claim
109 words
A spurt cap, adapted to be detachably secured to a test tube having a lip, comprising: an open-buttomed cap, having a sidewall and top closure, defining a cavity; a flexible lug comprised of a downwardly directed extension of a portion of the rear sidewall; and a horizontal spring clip mounteD on the lug in spaced relation below the lower edge of the sidewall, said clip having spaced, forwardly projecting, resilient arms defining a gap between their forward ends whereby they are adapted to be snapped onto a test tube to position the cap over the mouth of the test tube whereby the cavity substantially overlies the test tube lip.
Claim 3
Dependent Claim
144 words
In combination: a test tube having an outwardly protruding lip; a spurt cap, detachably secured to the test tube, comprising: an open-bottomed cap, having a sidewall and top closure, defining a cavity of greater diameter than the diameter of the test tube lip; a flexible lug comprising of a downwardly directed extension of a portion of the rear sidewall; a horizontal spring clip mounted on the lug in spaced relation below the lower edge of the sidewall, said claim clip having spaced, forwardly projecting resilient arms which embrace the test tube immediately below the test tube lip, said clip being adapted to be snapped on or off the test tube; said spring clip and lug being so constructed as to position the the cap in the operative position over the mouth of the test tube whereby the cavity substantially overlies the test tube lip.
Claim 4
Dependent Claim
31 words
The spurt cap of claim 1 wherein: a plurality of thin elongate members are attached to the wall of the spurt cap and extend at least part way across the cavity.
References Cited (Backward Citations)
US628460A
Cited
US1275441A
Cited
US1476300A
Cited
US1636215A
Cited
US1868730A
Cited
US2071881A
Cited
US2210996A
Cited
US2287746A
Cited
US2825276A
Cited
US2897992A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |