JPS5434983B2 - - Google Patents
Info
- Publication number
- JPS5434983B2 JPS5434983B2 JP5479273A JP5479273A JPS5434983B2 JP S5434983 B2 JPS5434983 B2 JP S5434983B2 JP 5479273 A JP5479273 A JP 5479273A JP 5479273 A JP5479273 A JP 5479273A JP S5434983 B2 JPS5434983 B2 JP S5434983B2
- Authority
- JP
- Japan
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
- B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
- B66C23/705—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by hydraulic jacks
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US25466572A | 1972-05-18 | 1972-05-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS4955048A JPS4955048A (https=) | 1974-05-28 |
| JPS5434983B2 true JPS5434983B2 (https=) | 1979-10-30 |
Family
ID=22965115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5479273A Expired JPS5434983B2 (https=) | 1972-05-18 | 1973-05-18 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3795321A (https=) |
| JP (1) | JPS5434983B2 (https=) |
| BR (1) | BR7303551D0 (https=) |
| DE (1) | DE2325117A1 (https=) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3921819A (en) * | 1974-07-26 | 1975-11-25 | Kidde & Co Walter | Boom latch mechanism |
| DE2638185C3 (de) * | 1976-08-25 | 1979-10-11 | O & K Orenstein & Koppel Ag, 1000 Berlin | Teleskopausleger für fahrbare Krane |
| DE2926292A1 (de) * | 1979-06-29 | 1981-01-08 | Harnischfeger Gmbh | Insbesondere mobiler teleskopauslegerkran |
| US4396126A (en) * | 1980-11-24 | 1983-08-02 | Harnischfeger Corporation | Telescoping crane boom |
| US4434902A (en) | 1981-03-05 | 1984-03-06 | Fmc Corporation | Apparatus for extending and retracting a manual boom section |
| US4514939A (en) * | 1981-08-17 | 1985-05-07 | Fmc Corporation | Extensible boom with manual section stored in base |
| US4492311A (en) * | 1981-08-17 | 1985-01-08 | Fmc Corporation | Coupling and latching mechanism for extensible boom |
| US4592474A (en) * | 1981-08-17 | 1986-06-03 | Fmc Corporation | Coupling and latching mechanism for extensible boom |
| US4585132A (en) * | 1984-09-10 | 1986-04-29 | Fmc Corporation | Extensible boom with manual section stored in base |
| US4688690A (en) * | 1986-03-07 | 1987-08-25 | Harnischfeger Corporation | Method and apparatus for extending fly section of crane boom |
| US4927315A (en) * | 1989-03-06 | 1990-05-22 | Chevron, Inc. | Vehicle lifting and towing apparatus |
| US4986721A (en) * | 1989-08-17 | 1991-01-22 | Eagle-Picher Industries, Inc. | Extendable boom fork lift vehicle |
| US5865327A (en) * | 1989-10-24 | 1999-02-02 | J & R Engineering Co., Inc. | Hydraulic boom for gantry and the like |
| US6685038B1 (en) | 1999-10-15 | 2004-02-03 | J & R Engineering Company, Inc. | Extendible boom with locking mechanism having equalizer arrangement |
| US10894699B2 (en) * | 2017-08-31 | 2021-01-19 | Stellar Industries, Inc. | Lightweight crane |
| EP3939929A4 (en) * | 2019-03-14 | 2022-11-02 | Tadano Ltd. | Expansion device and crane |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1217041B (de) * | 1964-10-01 | 1966-05-18 | Demag Zug Gmbh | Teleskopausleger mit einem innerhalb des Auslegers angeordneten Kraftgeraet |
| DE1268804B (de) * | 1965-09-17 | 1968-05-22 | Beteiligungs & Patentverw Gmbh | Teleskopausleger |
| JPS4427626Y1 (https=) * | 1966-03-30 | 1969-11-18 | ||
| JPS4518821Y1 (https=) * | 1967-03-03 | 1970-07-31 | ||
| US3386594A (en) * | 1967-05-08 | 1968-06-04 | Grove Mfg Company | Method of and apparatus for extending a telescopic crane boom |
| US3591016A (en) * | 1967-07-19 | 1971-07-06 | Tadano Tekkosho Kk | Boom extension means having more than three boom extension members for use with a truck crane |
| CH476625A (de) * | 1967-12-22 | 1969-08-15 | Warner Swasey Co | Teleskopischer hydraulisch ausfahrbarer Ladebaum für einen Kran, und Verfahren zum Betrieb des Ladebaumes |
| US3633460A (en) * | 1968-12-13 | 1972-01-11 | Tadano Tekkosho Kk | Extension means of a multistage extensible boom |
-
1972
- 1972-05-18 US US00254665A patent/US3795321A/en not_active Expired - Lifetime
-
1973
- 1973-05-15 BR BR3551/73A patent/BR7303551D0/pt unknown
- 1973-05-17 DE DE2325117A patent/DE2325117A1/de not_active Ceased
- 1973-05-18 JP JP5479273A patent/JPS5434983B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BR7303551D0 (pt) | 1974-06-27 |
| JPS4955048A (https=) | 1974-05-28 |
| DE2325117A1 (de) | 1973-12-06 |
| US3795321A (en) | 1974-03-05 |