Celebrity Inventors
Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 7422409 | Device for gripping and displacing material, such as roughage A device for gripping and displacing material, such as roughage for animals, which device is provided with a gripper (2) for gripping and subsequently displacing the material, and with a collecting device (5) comprising a collecting element (6) ... | 09/09/2008 |
| 7347763 | Toy vehicle for children The toy vehicle is characterized in that a rear excavator is fastened to the toy vehicle, that a seat boom is rotatably arranged on a receiving block which is fastened to the toy vehicle, that a support leg is mounted on the receiving block and is pivotable between ... | 03/25/2008 |
| 7243870 | Portable studio hoist A portable studio hoist which can be positioned and secured in a studio pipe grid or other structural setting without the need for hard wired power supplies or fixed attachments. The portable studio hoist is designed to operate on standard single phase 120 volt powe... | 07/17/2007 |
| 5934858 | Clamshell basket loader A loading device mounted to a collection vehicle is disclosed. The loading device may comprise several embodiments for scooping a soft-sided object through either a horizontal or vertical plane. The loading device is attached to a mechanized arm for compo... | 08/10/1999 |
| 5919027 | Clamshell basket loader A loading device mounted to a collection vehicle is disclosed. The loading device may comprise several embodiments for scooping a soft-sided object through either a horizontal or vertical plane. The loading device is attached to a mechanized arm for compo... | 07/06/1999 |
| 5299905 | Rope drum driving gear for a mobile multi-purpose child's toy A rope drum gear for a child's toy, for example a toy crane, is constructed such that a child can operate an elevating mechanism and a grab spade by way of ropes via the drum gear. A crank handle for actuating the mechanisms is connected to a split rotati... | 04/05/1994 |
| 5257887 | Collection container and method A collection container adapted to be lifted and emptied with a grasping device. The container forms an enclosure with two sections each having a projection and being pivotally connected to each other. The sections are held together with a spring. The cont... | 11/02/1993 |
| 4826109 | Helicopter supported material transfer assembly A material handling assembly primarily in the form of a clamshell structure being hyraulically activated and used in combination with a helicopter for the support of the clamshell structure and its operation thereof between a closed and an open position. ... | 05/02/1989 |
| 4528893 | Powered swivel connection for turning hanging loads about an upright axis A hydraulic motor either of the radial or axial piston type is used for swivelling a hanging load about an upright axis. The motor has a distributor for controlling the flow of hydraulic fluid to the input and drain ducts of the motor. The motor further h... | 07/16/1985 |
| 4497608 | Monument foundation digger A digger for digging out substantially vertically-sided holes e.g. for gravestone monument foundations, is in the form of an attachment adapted to be connected on the dipper stick of a backhoe machine. The attachment has a downwardly-depending digger fram... | 02/05/1985 |
| 4385780 | Cylindrical hoist bucket for free flowing granular material Two nested half cylinders, having a concentric axis and closed ends, are pivoted together on aligned pivot pins mounted in the closed ends and on the concentric axis. The nested half cylinders are actuated to pivot 90 degrees oppositely around the concent... | 05/31/1983 |
| 4364704 | Grab bucket suspended from hoisting installation The disclosure is directed to a grab bucket suspended from the cable of a hoisting means. The hosting means includes a first reversible motor drive means to raise and lower the grab bucket and a second motor drive means is associated with the grab bucket ... | 12/21/1982 |
| 4265579 | Bulk material unloader A bulk material unloader in which a clamshell bucket is suspended from a boom which is luffed from a position over the material to be unloaded through the vertical to a position over a bulk material receiving hopper. The hoists and/or the anchors for the ... | 05/05/1981 |
| 4231698 | System for one-hand control of two winches during hoisting of closed clamshell, with differentiation The invention relates to cranes or the like in which two hoist lines control a clamshell bucket. If the winch for one line is operated to draw in this line, it closes the clamshell bucket and hoists it. During this hoisting, the winch for the other line m... | 11/04/1980 |
| 4189386 | Debris separation and disposal system A system for the removal and disposal of debris from the water intake of power plants or the like is disclosed. The system includes a strainer basket having pivoted, separable sections movable from an abutting position to an open position; the sections ar... | 02/19/1980 |
| 4181291 | Apparatus for supporting and controlling the grabbing device of hoisting gear The one ends of the closing rope and holding rope of the jib or other hoisting gear-suspended grab of a winch are wrapped about a common drum and travel equivalent paths for syncronization of rope movement as the grab is raised and lowered. The opposite e... | 01/01/1980 |
| 4047311 | Automatic grab bucket with pressure responsive solenoid control A time saving automatic hydraulic control for that sequence in operations in which a grab excursioning out of sight of the operator, is sequentially lowered open to engage work material, closed to pick up a load, and then hoisted with its load and emptied... | 09/13/1977 |
| 3996678 | Free-fall grab A scissors-type, free-fall grab is disclosed for picking up ground samples from a sea bed. The grab includes two grab halves which may pivot relative to one another. A transverse bar engages the upper ends of the grab halves to hold the grab in its opened... | 12/14/1976 |
| 3985384 | Hydraulic apparatus for grab device A new and improved apparatus for a grapple or clam shell bucket having a plurality of pivoted tines or bucket elements which are actuated to a closed or holding position by a first predetermined hydraulic pressure and which are held in closed position by ... | 10/12/1976 |
| 3967394 | Automatic grab crane A time saving automatic hydraulic control for that sequence in operations in which a grab excursioning out of sight of the operator, is sequentially lowered open to engage work material, closed to pick up a load, and then hoisted with its load and emptied... | 07/06/1976 |
