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| Number | Title | Issue Date |
| 7967158 | Mobile lift crane with variable position counterweight A mobile lift crane includes a carbody, a rotating bed, a boom, a moveable counterweight unit, at least one linear actuation device and at least one arm pivotally connected at a first end to the rotating bed and at a second end to the linear actuation device. The ar... | 06/28/2011 |
| 7311452 | Telescoping camera crane A telescoping camera crane has mechanical drive and camera platform leveling systems, allowing for water resistant or submerged operation. Telescoping sections of the crane arm are driven by a hydraulic system, for smooth and near silent extension and retraction mov... | 12/25/2007 |
| 7258242 | Mobile crane boom having an autarchic hydraulic power unit mounted thereon The present invention relates to a mobile crane boom having a self-sufficient energy supply arranged on it for supplying hydraulic energy to at least one hydraulic load arranged on the mobile crane boom. The supply of the hydraulic load arranged on the mobile crane ... | 08/21/2007 |
| 7252441 | Telescoping camera crane A telescoping camera crane has mechanical drive and camera platform leveling systems, allowing for water resistant or submerged operation. Telescoping sections of the crane arm are driven by a hydraulic system, for smooth and near silent extension and retraction mov... | 08/07/2007 |
| 7231741 | Mobile cellular telephone tower A mobile cellular telephone tower comprises a self-propelled base and a tower connected to the base. The tower includes a base segment and at least a first extendable segment operatively connected to a second extendable segment. A winch is connected to the base, and... | 06/19/2007 |
| 7128479 | Telescoping camera crane A telescoping camera crane has mechanical drive and camera platform leveling systems, allowing for water resistant or submerged operation. Telescoping sections of the crane arm are driven by a hydraulic system, for smooth and near silent extension and retraction mov... | 10/31/2006 |
| 7121745 | Telescoping camera crane A telescoping camera crane has mechanical drive and camera platform leveling systems, allowing for water resistant or submerged operation. Telescoping sections of the crane arm are driven by a hydraulic system, for smooth and near silent extension and retraction mov... | 10/17/2006 |
| 7093730 | Tower crane with collapsible counter-jib The auto-erection tower crane possesses a tie-free jib, mounted at the summit of a mast and extended, toward the rear of its connection point to the summit of the mast, by a counter-jib, the end of which is connected, by a rear tie, to a bogie truck element of the c... | 08/22/2006 |
| 7062962 | Portable apparatus and method for measuring hydraulic features in rivers and streams A portable apparatus for measuring characteristics of hydraulic features in rivers and streams that are unwadeable. The apparatus consists of a tripod base, a horizontal boom that articulates on the tripod, a carriage configured to travel on the boom, and a measurin... | 06/20/2006 |
| 7048257 | Winch with telescoping mast A portable winch suitable for use in underground pipe bursting and replacement includes a mounting frame positionable at a top opening of a hole such as a receiving pit or manhole. A telescoping mast having a series of nested, top and bottom mast sections is mounted... | 05/23/2006 |
| 7021167 | Rotary joint mechanism A rotary joint mechanism for connecting two machine parts to effect relative movement between the two machine parts includes an outer ring adapted to be connected to a rotatable machine part, and an inner ring adapted to be connected to a fixed machine part, with th... | 04/04/2006 |
| 6928774 | Enveloping body The invention relates to a covering body for masts of construction cranes, electricity lines, or the like with an outer covering which is designed to partially or totally encase a mast in the direction of extension and/or peripheral direction and which furthermore h... | 08/16/2005 |
| 6234453 | Rolling door winch apparatus Winch apparatus for raising and holding a rolling steel door includes a wheeled base with telescoping members extending upwardly from the base. A hand cranked winch raises and lowers the telescoping members, while a reversible electric motor is used to po... | 05/22/2001 |
| 5850713 | Device raising and lowering apparatus An apparatus for raising and lowering devices such as an antenna including a multiple-stage cylinder system composed of a plurality of telescopically connected cylinder units each of which comprising an internal cylinder and an external cylinder that are ... | 12/22/1998 |
| 5813552 | Telescopic boom with multistage hydraulic cylinder A telescopic boom contains a multistage hydraulic cylinder for extending and retracting the boom parts. The telescopic boom is characterized in that a first component of a supporting device is secured to at least one cylinder and in that a second componen... | 09/29/1998 |
| 5769251 | Controlling operations of a reach tower crane An apparatus and a method for controlling the operation of a reach tower crane, in which a horizontal boom can safely and securely be operated or stored by one operator in the cab, and in which even if sensors are out of order, the stability of the crane ... | 06/23/1998 |
| 5733096 | Multi-stage telescoping structure A multi-stage telescoping tube structure and a robot including a multi-stage telescoping tube structure. The multi-stage telescoping tube structure includes an outer tube, an intermediate tube, and an inner tube. The intermediate tube is slidably received... | 03/31/1998 |
| 5601284 | Adjustable basketball goal An adjustable basketball goal generally includes a movable support, telescoped within a vertically mounted fixed support, and a hydraulic, water-powered drive mechanism for enabling the raising or lowering of a basketball rim connected to the upper end of... | 02/11/1997 |
| 5237690 | System for testing adaptor card upon power up and having disablement, enablement, and reconfiguration options A data processing system such as a personal computer includes a plurality of expansion connectors for receiving adapter cards. A non-volatile memory stores programmable option select (POS) data that is stored when the system is configured. A Power On Self... | 08/17/1993 |
| 5020323 | Telescopically extendable and retractable arm The arm includes a supporting member and a plurality of telescoping members located therein and having a subsequently decreasing diameter. The supporting member and the telescoping members are interconnected by means of at least one kinematic train which ... | 06/04/1991 |
| 4932176 | Extendible and retractible mast system A telescopic mast system has a base tube, a plurality of axially movable coaxial inner tubes nestable successively within each other and within the base tube, and a winch supported at the lower end of the base tube with a pair of preferably wire ropes dri... | 06/12/1990 |
| 4883186 | Easy erecting telescopic mast A system for the raising and lowering of telescopic masts which operates in one of two general ways, the first way of which includes an attached jack which pulls rather than pushes to effect erection of the mast and the second way where an external turnin... | 11/28/1989 |
| 4815757 | Rapid development surveillance vehicle and method A rapid deployment surveillance vehicle is disclosed for detecting illegal immigration across national borders and the like. An off-the-road vehicle (V) is equipped with a rapid mast erection/retraction assembly (A) which includes a carriage mechanism (24... | 03/28/1989 |
| 4663900 | Locking mast and stop ring assembly A locking assembly (35) for telescoping masts (10) having at least first and second tubes (12,13), the second tube (13) fitting within the first tube (12). The assembly includes sleeve means (36) encompassing one end (59) of the second tube (13) and rigid... | 05/12/1987 |
| 4616225 | Portable traffic control signal device A portable traffic control unit comprising a wheeled trailer having a main frame attachable to a towing vehicle. A telescoping, vertical mast carries a pivotally mounted boom assembly. A first traffic control signal is secured to the vertical mast and a s... | 10/07/1986 |
| 4596336 | Mobile crane According to the invention a extendible and retractable luffing jib (13) is hingedly supported by a main boom (10,25) which can be positioned in a horizontal position, which luffing jib (13) protrudes at its rear side over some distance beyond the main bo... | 06/24/1986 |
| 4383616 | Luffing jib for construction crane A massive crane luffing jib is held and loaded under compression atop the main crane boom such as a hydraulically extensible and retractable telescopic boom whose sections may be locked for safety. The luffing jib is pivoted to an adapter atop the boom to... | 05/17/1983 |
| 4350255 | Telescoping mobile crane A telescopic, mobile crane comprising, a first base member pivotally mounted on a carriage, a second telescopic member telescopically engaged with the first member, an idle or manual member telescopically engaged to the second member and a drive piston an... | 09/21/1982 |
| 4309854 | Telescopic mast A telescopic mast having a plurality of elements comprising the mast wherein the elements are slidably arranged in relation to each other, together with cables for the erection of the mast, wherein the cables are before the erection of the mast connected ... | 01/12/1982 |
| 4267934 | Telescopically extendible mast crane A device for folding and unfolding a hinged boom pivotally mounted atop a telescopic crane mast, in which a cable is secured to the mast and passes over pulleys located, in sequence, at the top of the lower mast section, the bottom of the upper mast secti... | 05/19/1981 |
| 3952467 | Extendible tower structure An extendible tower is disclosed herein having a base section and a plurality of nestable extendible sections associated therewith. A single cable drive system is concealed within the sections and is employed to raise and lower the extendible sections wit... | 04/27/1976 |
| 3944081 | Tower crane A tower pivotally connected to a base mounting on a platform is movable by raising and lowering means between a vertical operating position and a substantially horizontal stored position. A turntable has its non-rotatable part hingedly connected to the to... | 03/16/1976 |
| 3939988 | Tower crane A tower crane tower pivoted at its base to a mobile platform for movement from a horizontal travel position to a vertical operating position has a jib support structure mounted at the top of the tower which includes a part rotatable about the vertical axi... | 02/24/1976 |
| 3938670 | Tower crane A crane including a base, a tower pivoted thereto, a turntable mounted on top of the tower and a jib with a jib support platform hinged to the rotatable part of the turn table.... | 02/17/1976 |
| 3934729 | Tower crane A tower pivotally connected to a base mounting on a mobile platform is movable by raising means between a vertical operating position and a substantially horizontal travel position. A turntable at the top of the tower carries a tiltable unit which include... | 01/27/1976 |
