US3698025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marking buoy
Assignee: HITCHCOCK GAS ENGINE CO Inc
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Filing: 1970-10-12
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Granted: 1972-10-17
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Expires: 1990-10-12
Abstract
Abstract The disclosed buoy is lightweight and portable and comprises an elongate tubular body of tough but resilient plastic material which is partially filled with light porous plastic material, the bottom end having a detachable connection with a receptacle which may be filled with sand or other ballast material, the open top end of the body carrying signaling means, such as a photoelectrically-controlled flashing light which is operated by a replaceable electric battery contained within the body of the buoy, there being means whereby the buoy may be attached to a boom for controlling oil spillage for instance or to an anchor.
Inventors
- 👤 Walter J Worobel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:07
CPC Classifications
B; B63; B63B; B63B22/00; B63B22/16; B63B22/166
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
A marking buoy comprising a unitary easily portable elongate hollow cylindrical body formed of tough, flexible lightweight plastic material having a closed bottom neck portion and an open top neck portion; a ballast container formed of tough lightweight plastic material having a neck portion having an opening through which ballast material may pass to load and unload the ballast container; screw-threaded means for detachably connecting the open end of the ballast container to the bottom neck portion of the body and thereby retain said ballast material in said container; cushion means partially filling the lower portion of the body and comprising porous plastic material molded in situ in said body and adhered thereto; closure means; screw-threaded means for detachably mounting said closure means on the open top neck portion of the body to close the same, said closure means including electric warning signal means; and a battery mounted within the body and supported in a pocket in said cushion means to energize said signal means.
Claim 2
Dependent Claim
165 words
A marking buoy comprising a unitary easily portable elongate hollow cylindrical body formed of tough, flexible lightweight plastic material having a closed bottom neck portion and an open top neck portion; a ballast container formed of tough lightweight plastic material having a neck portion having an opening through which ballast material may pass to load and unload the ballast container; screw-threaded means for detachably connecting the open end of the ballast container to the bottom neck portion of the body and thereby retain said ballast material in said container; cushion means partially filling the lower portion of the body and comprising porous plastic material molded in situ in said body and adhered thereto; closure means; screw-threaded means for detachably mounting said closure means on the open top neck portion of the body to close the same, said closure means including electric warning signal means; and a battery mounted within the body and supported in a pocket in said cushion means to energize said signal means.
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) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |