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"The abolishment of pain in surgery is a chimera. It is absurd to go on seeking it...knife and pain are two words in surgery that must forever be associated in the consciousness of the patient."
Dr. Alfred Velpeau, French surgeon ; 1839
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| Number | Title | Issue Date |
| 7350770 | Air conditioner compressor hoist The present invention provides a portable hoist for use by air conditioner mechanics, or others, to lift compressors in and out of HVAC units (or other heavy objects). The hoist has a lifting arm rotatable relative to a base and preferably provides a compact storage... | 04/01/2008 |
| 7310915 | Retractable column and method of forming The present invention is an improved apparatus and method for forming a retractable tower or column. The present invention includes pointed hooks wherein the hooks are attached to each section of a section chain, one in a horizontal direction and one in an off-set m... | 12/25/2007 |
| 7287948 | Load lifter for a motor vehicle A load lifter for a motor vehicle includes a vertically standing outer support firmly attached to the motor vehicle, having an outer support through whose interior a second load support can be pivoted around an axis located in the lower area. The load support is con... | 10/30/2007 |
| 7219810 | Mobile crane with elongated boom The invention concerns a mobile crane with a long main boom. According to the invention, the main boom is in two parts linked at a swivel point in such manner that the boom can bend when raised and can be positioned in extended or quasi-extended final erection posit... | 05/22/2007 |
| 7216774 | Crane The present invention provides a crane where a spreader retainer is disposed on a rear surface of an extreme end of the lowest boom portion used both for a tower boom and a normal boom, a distance between an upper spreader, which constitutes a boom raising/lowering ... | 05/15/2007 |
| 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 |
| 6955025 | Self-erecting tower and method for raising the tower A tall tower is divided into an upper section with a tower top and a lower section with a tower bottom. The sections are hinged together. The lower section is hinged to a tower base. A telescoping crane is attached to a lift point on the lower section. The crane is ... | 10/18/2005 |
| 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 |
| 6272413 | Safety system for boom-equipped vehicle While a crawler body 110 is traveling, infrared sensors 144 and an elevational difference calculator 132 incorporated in a controller 130 detects the magnitude of a step present ahead of the crawler body 110. A safety speed calculator 134 calculates a saf... | 08/07/2001 |
| 5431526 | Lifting system for transporting vehicle A lift mountable in a transporting vehicle for loading and unloading objects such as small motorized carts. The lift includes an adjustable stand and pivotal boom assembly. An electric motor selectively operates a drum on which is wound a lifting cable or... | 07/11/1995 |
| 4684306 | Auxiliary workover rig An auxiliary rig is used in combination with a primary drilling or workover rig. The primary drilling rig typically includes an elongated upstanding drill tower, a base and a crown block. The auxiliary rig of the present invention includes a racking tower... | 08/04/1987 |
| 4651884 | Portable and collapsible derrick structure A pickup truck derrick assembly includes a base frame, a derrick A-frame pivotally mounted on the base frame, a derrick frame erection subassembly, a frame support and locking subassembly and a cable compensation system. In one form, the frame erection su... | 03/24/1987 |
| 4590719 | Erection hinge An erection hinge for use in erecting columns for open air structures utilizes a mounting plate which removably attaches to the foundation of such structures and which supports an offset hinge. The offset hinge carries a cradle which supports a column to ... | 05/27/1986 |
| 4381060 | Ring supported mobile tower crane A ring supported mobile lift crane includes a load carrier and a counterweight carrier in riding contact with the ring and a tower mounted on the carrier for pivotal movement between generally horizontal and vertical positions with a boom pivoted to the o... | 04/26/1983 |
| 4004778 | Portable roof winch A portable roof winch comprising a collapsible frame that is adjustable to accommodate the slant of a roof, an extensible beam consisting of two telescoping parts one of which is pivotally mounted on the frame on a vertical axis and the other part being m... | 01/25/1977 |
