US3675490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detection system for insecticides
Assignee: Sci-Med Inc
•
Filing: 1970-06-08
•
Granted: 1972-07-11
•
Expires: 1990-06-08
Abstract
Abstract The invention relates to a kit for obtaining samples in solution form of spills of suspected organo-phosphorous insecticides. An essential part of the kit is a small sponge saturated with a solvent such as chloroform. The sponge is attached to a tubular handle and, in operation, the sponge is pressed down on a small quantity of the suspected insecticide which becomes dissolved into the solvent to form a solution containing the suspected insecticide. Upon lifting the sponge a portion of the solution is drawn into the sponge. A portion of the solution drawn into the sponge is caused to be directed into and retained in the bore of the handle where it is then available for analysis.
Inventors
- 👤 Arnold W Blomquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:55
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/04; G01N1/10; G01N1/14; G01N2001/028; G01N2001/1472; G01N2001/149
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
101 words
A device for sampling spills of chemicals comprising a tube having a cylindrically shaped bore and threads at the lower end thereof, a valve seat at the upper end of said bore, a valve engageable with said valve seat, spring means biasing said valve in the direction of said valve seat, a button for said valve to allow manual opening of said valve, a base member having a bore and threads which are engageable with said threads of said tube, and a rectangularly shaped sponge member attached to said base member, said sponge member being laterally unrestrained by said base member.
Claim 2
Independent Claim
101 words
A device for sampling spills of chemicals comprising a tube having a cylindrically shaped bore and threads at the lower end thereof, a valve seat at the upper end of said bore, a valve engageable with said valve seat, spring means biasing said valve in the direction of said valve seat, a button for said valve to allow manual opening of said valve, a base member having a bore and threads which are engageable with said threads of said tube, and a rectangularly shaped sponge member attached to said base member, said sponge member being laterally unrestrained by said base member.
Claim 3
Dependent Claim
18 words
A device according to claim 1 wherein said tube has a constricted opening at the lower end thereof.
Claim 4
Dependent Claim
23 words
A sampling kit wherein said device of claim 1 is disposed in a sealed container, said sponge member being saturated with a solvent.
Claim 5
Dependent Claim
22 words
A sampling kit according to claim 3 wherein said solvent is highly volatile and has a selective solubility for a predetermined chemical.
Claim 6
Dependent Claim
12 words
A sampling kit according to claim 4 wherein said solvent is chloroform.
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) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |