Patent US3672175A successfully refreshed from Google Patents.
US3672175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ice cutter
Assignee: Sunoco Inc
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Filing: 1970-10-02
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Granted: 1972-06-27
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Expires: 1990-10-02
Abstract
Abstract A cutter rotatably mounted on a marine structure for cutting and diverting encroaching ice floes. The cutter has upper and lower cutting edges that are angled from one another and intersect. Sides angle away from the cutting edges, and the trailing edge of the sides flare outwardly to divert the ice around the marine structure. The cutter is attached to a sleeve which rotates around the marine structure in response to a vane member which also acts as a counterweight and is shaped to act as a protected boat dock.
Inventors
- 👤 Charley Mack Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:18
CPC Classifications
E; E02; E02B; E02B17/00; E02B17/0017; E02B17/0021
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
53 words
Apparatus for shearing ice floes floating in a body of water and encroaching a marine structure comprising: a cutting member rotatably mounted on the marine structure, said cutting member having upper and lower cutting edges facing each other which are substantially equal in length and converge at a point near the ice level.
Claim 2
Dependent Claim
53 words
Apparatus for shearing ice floes floating in a body of water and encroaching a marine structure comprising: a cutting member rotatably mounted on the marine structure, said cutting member having upper and lower cutting edges facing each other which are substantially equal in length and converge at a point near the ice level.
Claim 3
Dependent Claim
46 words
The apparatus of claim 1 wherein the cutting member has upper and lower wedge shaped portions having concave sides and wherein the upper cutting edge is formed on the upper wedge shaped portion and the lower cutting edge is formed on the lower wedge shaped portion.
Claim 4
Dependent Claim
60 words
The apparatus of claim 1 wherein the portion of the cutting member having the upper and lower cutting edges is shaped in the form of a pair of plow members, one of which is inverted and positioned above the other plow member in such a manner that the end of the cutting edges facing the ice floe are vertically spaced.
Claim 5
Dependent Claim
28 words
The apparatus of claim 1 wherein a vertical section of the cutting member taken at the intersection of the upper and lower cutting edges describes two isosceles triangles.
Claim 6
Dependent Claim
35 words
The apparatus of claim 1 including nozzle means for directing a liquid at high pressure against the ice so as to cut the ice at a point prior to the ice reaching the cutting member.
Claim 7
Dependent Claim
28 words
The apparatus of claim 1 including means responsive to elements directing the movement of ice for orienting the cutting member relative to direction of movement of the ice.
Claim 8
Dependent Claim
27 words
The apparatus of claim 1 including a sleeve member for mounting the cutting member and including a counterweight attached to the sleeve member opposite the cutting member.
Claim 9
Dependent Claim
36 words
The apparatus of claim 7 wherein the counterweight is shaped to provide a cove-like area for docking vessels servicing the marine structure to protect said vessels against the ice floes being diverted around the marine structure.
Claim 10
Dependent Claim
28 words
The apparatus of claim 7 wherein the counterweight is shaped similar to a vane member to align the cutting member with the direction of movement of the water.
Claim 11
Dependent Claim
65 words
The apparatus of claim 2 wherein the wedge shaped cutting member is titled so that the concave sides thereof divert one portion of the ice floe above the normal level of the ice floe and another portion is diverted below the normal level of the ice floe to minimize the amount of crushing of the ice floe as the ice floe by-passes the marine structure.
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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |