Patent US4076313A successfully refreshed from Google Patents.
US4076313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underwater recovery apparatus
Assignee: Individual
•
Filing: 1976-08-20
•
Granted: 1978-02-28
•
Expires: 1996-08-20
Abstract
Abstract A system for recovery of relatively small items such as treasure located on and beneath the bottom of the sea or other body of water in the form of a head having a shaft with attachment at the upper end for suspension from a ship or the like, compressed-air and oscillatory means for driving the shaft into the sea-bottom and a circular net supported by chains and by ribs radiating from pivots at the lower end and deployed outwardly by upward movement through the bottom material when the shaft is drawn upward on retrieval of the head.
Inventors
- 👤 Frank P. Sperandeo, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:12
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/88; E02F3/90; E02F3/92; E02F3/9287; E02F3/46; E02F3/58; E02F3/60; E02F3/9293; E02F5/00; E02F5/006; E02F7/00; E02F7/005; B; B63; B63B; B63B21/00; B63B21/24; B63B21/26; B63B2021/267
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
182 words
In a device for submersion in a sea bottom or the like and retrieval therefrom to secure items from the sea bottom, including: an elongate shank having an upper and a lower end, means for attachment proximate the upper end, a plurality of arms in radial array about the shank, each arm having a first end and a second end, means pivoting the first end of each arm proximate the lower end of the shank, whereby the arms can pivot from radial position to position folded along the shaft; means flexibly connecting the second end of each arm to the shank, a net supported by the arms, means for forcing the device into the sea bottom and means for spreading all said arms and net and screening material from the sea bottom on said retrieval, the improvement comprising: the means for forcing including means for vibrating said device the lower end of the shank having a conical header pointing downwardly, and means around the conical header for ejecting compressed gas downwardly for coacting with the conical header in penetrating the sea bottom.
Claim 2
Dependent Claim
182 words
In a device for submersion in a sea bottom or the like and retrieval therefrom to secure items from the sea bottom, including: an elongate shank having an upper and a lower end, means for attachment proximate the upper end, a plurality of arms in radial array about the shank, each arm having a first end and a second end, means pivoting the first end of each arm proximate the lower end of the shank, whereby the arms can pivot from radial position to position folded along the shaft; means flexibly connecting the second end of each arm to the shank, a net supported by the arms, means for forcing the device into the sea bottom and means for spreading all said arms and net and screening material from the sea bottom on said retrieval, the improvement comprising: the means for forcing including means for vibrating said device the lower end of the shank having a conical header pointing downwardly, and means around the conical header for ejecting compressed gas downwardly for coacting with the conical header in penetrating the sea bottom.
Claim 3
Dependent Claim
36 words
In a device as recited in claim 1, the means for forcing further including means for ejecting compressed gas from the outer faces of the arms with said arms in folded position along the elongate shank.
Claim 4
Dependent Claim
31 words
In a device as recited in claim 1, the means for screening including means for ejecting compressed gas from said arms with the arms in radial position concurrently with said oscillating.
Claim 5
Dependent Claim
46 words
In a device as recited in claim 3, said means for ejecting including structure defining: a series of orifices in the outer face of each arm and a plurality of orifices in the lateral face of each arm with an internal passage connecting all said orifices.
Claim 6
Dependent Claim
43 words
In a device as recited in claim 4, the means for vibrating being an integral part of the elongate shank above the arms when the arms are in folded position along the elongate shank and below the upper end of said elongate shank.
Claim 7
Dependent Claim
22 words
In a device as recited in claim 4, the means for vibrating located on the elongate shank as part of said header.
Claim 8
Dependent Claim
59 words
In a device as recited in claim 1, the means for spreading including means for releasibly holding the arms in folded position along the elongate shank, comprising a split ring surrounding said arms, the split ring including plural arcs pivoted together, a removable pin for fastening the plural arcs around the arms, and means for removing the removable pin.
Claim 9
Dependent Claim
50 words
In a device as recited in claim 1, the elongate shank having an "X" shape in cross-section, part of the means for ejecting compressed gas having at least one conduit connecting therewith, and said at least one conduit passing down the elongate shank fitted between arms of said "X" shape.
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) | 1981-02-27 | 1981-08-29 | 1982-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-27 | 1985-08-29 | 1986-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-27 | 1989-08-29 | 1990-02-28 | $7700.00 | Window Closed / Lapsed |