Patent US3746104A successfully refreshed from Google Patents.
US3746104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rock working implement carrier
Assignee: Air Advantage Pty Ltd
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Filing: 1971-09-09
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Granted: 1973-07-17
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Expires: 1991-09-09
Abstract
Abstract A rock working implement carrier comprising a boom adapted to be pivotally mounted by one end on a mobile machine, power means to move the boom relative to the machine and hold it in a selected position, a head pivotally mounted on the other end of the boom, a socket on the head, a mast vertically slidable and rotatable in the socket, power means to move the head and the mast and hold the several parts in selected positions, a yoke mounted on the bottom of the mast, an implement carrier swingably mounted in the yoke and means to move and hold the carrier in a selected position, an implement cradle slidably mounted in and projecting from the carrier and a pneumatic-cylinder plunger unit to actuate the cradle.
Inventors
- 👤 Intosh I Mc
- 👤 N Bowers
- 👤 B Bowers
- 👤 B Miles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:50
CPC Classifications
E; E21; E21C; E21C27/00; E21C27/20; E21C27/28
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
218 words
A rock working implement carrier comprising a boom pivotally mounted at one end on a mobile machine, power means to move the boom about its pivot in a vertical plane and hold it in a selected position, a head pivotally mounted on the other end of the boom and power means to move the head in a vertical plane about its pivot and hold it in a selected position, a socket transversely slidably mounted on the head, the longitudinal axis of the socket being at right angles to the longitudinal axis of the head, first power means connecting the head and socket to move the socket and hold it in a selected position on the head, a mast slidable and rotatable in the socket, second power means carried by the head and connected to said mast to rotate the mast and hold it in a selected position, third power means connected to said mast and said socket to raise and lower said mast, a yoke mounted on the bottom of the mast, an implement carrier swingably mounted in the yoke, fourth power means connecting the yoke and carrier to move and hold the carrier in a selected position, an implement cradle slidably mounted in and projecting from the carrier and a pneumatic-cylinder plunger unit to actuate the cradle.
Claim 2
Dependent Claim
218 words
A rock working implement carrier comprising a boom pivotally mounted at one end on a mobile machine, power means to move the boom about its pivot in a vertical plane and hold it in a selected position, a head pivotally mounted on the other end of the boom and power means to move the head in a vertical plane about its pivot and hold it in a selected position, a socket transversely slidably mounted on the head, the longitudinal axis of the socket being at right angles to the longitudinal axis of the head, first power means connecting the head and socket to move the socket and hold it in a selected position on the head, a mast slidable and rotatable in the socket, second power means carried by the head and connected to said mast to rotate the mast and hold it in a selected position, third power means connected to said mast and said socket to raise and lower said mast, a yoke mounted on the bottom of the mast, an implement carrier swingably mounted in the yoke, fourth power means connecting the yoke and carrier to move and hold the carrier in a selected position, an implement cradle slidably mounted in and projecting from the carrier and a pneumatic-cylinder plunger unit to actuate the cradle.
Claim 3
Dependent Claim
28 words
A rock working implement carrier as claimed in claim 1 wherein the boom is in two parts pivoted together for movement about the pivot in a vertical plane.
Claim 4
Dependent Claim
45 words
A rock working implement carrier as claimed in claim 1 wherein the boom is a telescopic boom of two parts namely a base part and a fore part, and including a piston-cylinder unit to move the fore part in and out of the base part.
Claim 5
Dependent Claim
58 words
A rock working implement carrier as claimed in claim 1 wherein said second power means comprises a motor and sprocket on said head and a chain connecting said mast and sprocket, said third power means comprising a piston-cylinder unit connected to said mast and a column rotatably supported in said socket and in which said mast can slide.
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) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |