Patent US3789336A successfully refreshed from Google Patents.
US3789336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retractible magnet holder
Assignee: SL Industries Inc
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Filing: 1973-02-22
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Granted: 1974-01-29
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Expires: 1993-02-22
Abstract
Abstract A retractible magnet holder including a barrel member with an elongated cap member extended outwardly from one end, and a sleeve member fixed in the barrel member adjacent such one end. The barrel member and end cap are composed of a non-magnetic material, and the sleeve member is formed of a magnetic material. A non-magnetic shaft member and an attached magnet are reciprocally movable within the barrel member to a first metal pick-up position wherein the magnet is within the cap member and to a second metal release position wherein the magnet is within the sleeve member. A latch means stops and releasably holds the shaft member and magnet in the second position therefor.
Inventors
- 👤 M Gordin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:50
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/02; H01F7/0231; H01F7/0252; H01F7/0257
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
174 words
A retractible magnet device comprising: a. a non-magnetic tubular barrel member having an axial bore closed at one end thereof, b. a cylindrical sleeve member of a ferrous material located within said bore at a position spaced inwardly from the closed end thereof, c. a manually actuated non-magnetic shaft member reciprocally movable within said bore having one end projected outwardly from the other end of said bore, d. a magnet means attached to the opposite end of said shaft member for movement therewith from an operative position, located within the bore of said barrel member at the closed end thereof, to an inoperative position located within said sleeve member, said magnet means in the inoperative position therefor having one end adjacent the closed end of the bore and the other end located intermediate the ends of said sleeve member, e. a latch means movably mounted on said shaft member, and f. a stop portion on said barrel member engageable with said latch means to releasably lock the magnet means in said inoperative position therefor.
Claim 2
Dependent Claim
174 words
A retractible magnet device comprising: a. a non-magnetic tubular barrel member having an axial bore closed at one end thereof, b. a cylindrical sleeve member of a ferrous material located within said bore at a position spaced inwardly from the closed end thereof, c. a manually actuated non-magnetic shaft member reciprocally movable within said bore having one end projected outwardly from the other end of said bore, d. a magnet means attached to the opposite end of said shaft member for movement therewith from an operative position, located within the bore of said barrel member at the closed end thereof, to an inoperative position located within said sleeve member, said magnet means in the inoperative position therefor having one end adjacent the closed end of the bore and the other end located intermediate the ends of said sleeve member, e. a latch means movably mounted on said shaft member, and f. a stop portion on said barrel member engageable with said latch means to releasably lock the magnet means in said inoperative position therefor.
Claim 3
Dependent Claim
171 words
The retractible magnet device according to claim 1, wherein: a. said latch means includes a stop pin movable transversely of and within said shaft member, with one end thereof extendible outwardly from said shaft member, and b. the axial bore of said barrel member has the wall surface thereof formed with an annular groove located between said sleeve member and the other end of said bore, said groove having the side surface thereof adjacent the sleeve member tapered in a direction inwardly of the barrel member and toward the sleeve member and the opposite side surface thereof located in a plane extended transversely of the barrel member, and c. means for yieldably urging said one end of the pin into bearing engagement with the wall surface of said bore, d. said one end of the pin member, when said magnet means is in the inoperative position therefor, being within said groove in abutting engagement with the opposite side surface of said annular groove which opposite side surface constitutes said stop portion.
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) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |