Patent US3799415A successfully refreshed from Google Patents.
US3799415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sluice pack
Assignee: Lee Raymond Organization Inc
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Filing: 1972-07-12
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Granted: 1974-03-26
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Expires: 1992-07-12
Abstract
Abstract A combination back pack and sluice box, which is equipped with straps for fastening to the back, and when removed, slides apart so as to be in the shape of a sluice box used for placer mining. The basic frame of the device is a U-shaped section of tubing to which webbing, a screen and mat tray and a riffle tray are fastened, together with D rings to which the fastening straps may be attached.
Inventors
- 👤 D Tidd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:09
CPC Classifications
A; A45; A45F; A45F4/00; B; B03; B03B; B03B5/00; B03B5/02; B03B5/26
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
275 words
A back pack which is convertible for use as a placer miner''s sluice box that is mounted on a frame which is fitted with means for fastening a pair of shoulder straps and including a section of wire screen, a gold dust mat, a screen and mat tray, and a sluice box and riffle tray, said frame being formed of two parallel members that are joined together in spaced relation to each other, with the frame members joined together along their length by back rest webbing for support when worn as a back pack, said frame members serving as the fastening means for the section of wire screen, the gold dust mat, the screen and mat tray and the sluice box and riffle tray fastened between the frame members, said sluice box and riffle tray being fitted with a first set of holes, for bolting in a retracted position to the device, said sluice box and riffle tray mounting adjacent to the wire screen, gold dust mat and the screen and mat tray in the retracted position; with said riffle tray fitted with a second set of holes for bolting in an extended position to the frame members of the device such that the sluice box and riffle tray is mounted in the extended position, to extend longitudinally beyond the frame members, said frame members being fitted with releasable means for joining of a pair of shoulder straps to the frame members, whereby the pack frame and sluice box function as a back pack in the retracted position, with the unit serving, in the extended position, as a placer mining sluice box and riffle tray.
Claim 2
Dependent Claim
275 words
A back pack which is convertible for use as a placer miner''s sluice box that is mounted on a frame which is fitted with means for fastening a pair of shoulder straps and including a section of wire screen, a gold dust mat, a screen and mat tray, and a sluice box and riffle tray, said frame being formed of two parallel members that are joined together in spaced relation to each other, with the frame members joined together along their length by back rest webbing for support when worn as a back pack, said frame members serving as the fastening means for the section of wire screen, the gold dust mat, the screen and mat tray and the sluice box and riffle tray fastened between the frame members, said sluice box and riffle tray being fitted with a first set of holes, for bolting in a retracted position to the device, said sluice box and riffle tray mounting adjacent to the wire screen, gold dust mat and the screen and mat tray in the retracted position; with said riffle tray fitted with a second set of holes for bolting in an extended position to the frame members of the device such that the sluice box and riffle tray is mounted in the extended position, to extend longitudinally beyond the frame members, said frame members being fitted with releasable means for joining of a pair of shoulder straps to the frame members, whereby the pack frame and sluice box function as a back pack in the retracted position, with the unit serving, in the extended position, as a placer mining sluice box and riffle tray.
Claim 3
Dependent Claim
25 words
The combination as cited in claim 1 is which the bottom interior surface of the sluice box and riffle tray is faced with round rods.
References Cited (Backward Citations)
US185116A
Cited
US2923410A
Cited
US2926786A
Cited
US3223300A
Cited
US3464607A
Cited
US3693849A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |