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Lawrence Welk, the bandleader who entertained millions of Americans over a generation of broadcasting his TV show, once received a patent: for a music-themed design of an ashtray.
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| Number | Title | Issue Date |
| 7377398 | Portable knockdown trolley hoist A portable knockdown trolley hoist, comprising: a trolley support member having opposing ends; a trolley having a plurality of upper roller bearings and a plurality of lower roller bearings, the trolley rollably sandwiching an upper portion and a lower portion of th... | 05/27/2008 |
| 7069681 | Sliding sign A sliding sign is movably mounted on an overhead truss which extends over a roadway. The sliding sign is mounted on rails connected to the top and bottom chords of the truss so that the sign may be moved from a position over the roadway to a position adjacent the sh... | 07/04/2006 |
| 6957859 | Chair for a person lift A chair for transporting a person from a first location to a second location along a rail in response to an input provided to a control for a hoist and motorized conveyor by the person. The chair includes first and second seat portions that are pivotally attached to... | 10/25/2005 |
| 6640986 | Anti-sway hydraulic system for grappler A hydraulic system for actuating opposed arms of a grappler for a gantry crane dampens swaying motion of the arms. Within a conduit which carries pressurized fluid to and/or from actuators to pivot the arms, a dampener includes a restrictor having an orif... | 11/04/2003 |
| 6286696 | Hoist system anti-drift device A gantry crane including a lifting grappler is provided with a hoist locking mechanism to prevent undesired downward drifting of the grappler, especially during periods when the crane is parked and not in operation. The hoist locking device can selectivel... | 09/11/2001 |
| 5865327 | Hydraulic boom for gantry and the like A hydraulic boom gantry and a method of lifting a load associated therewith. The gantry includes telescoping sections with a hydraulic cylinder mounted therein. A swiveling plate structure allows minor deviation between sets of telescoping sections. A col... | 02/02/1999 |
| 5660143 | Apparatus for lifting and transporting large animals A mobile apparatus is provided that is capable of recovering, supporting and transporting sick or injured large animals in their natural upright position. The mobile apparatus having a telescoping boom associated with the support structure of the apparatu... | 08/26/1997 |
| 5427494 | Container carrier A four-wheel device used to lift drums with compressed air stored in an on-board storage tank without special straps, tools, or clamps that allows the operator to lift the drum with no physical stress and to roll the unit to another location with minimum ... | 06/27/1995 |
| 5188247 | Lifting apparatus A lifting apparatus that permits an object to be precisely lifted in a highly safe manner along a number of selected paths. The object to be lifted can be vertically raised along selected transversely spaced paths by vertically raising the lifting arms of... | 02/23/1993 |
| 5035336 | Compact collapsible manhole cover lifter A manually actuated, hydraulic manhole cover lifter (10) comprises a frame (12) mounted on wheels (58) and adapted to straddle a manhole. An actuator (30) is mounted on the frame. The actuator comprises a cylinder (36) connected to a pump (34). A magnet (... | 07/30/1991 |
| 4789072 | Hydraulic manhole cover lifter A manually actuated, hydraulic manhole cover lifter (10) comprises a frame (12) mounted on wheels (58)and adapted to straddle a manhole. An actuator (30) is mounted on the frame. The actuator comprises a cylinder (36) connected to a pump (34). A magnet (5... | 12/06/1988 |
| 4718563 | Overhead gantry The instant invention concerns a transportable overhead gantry for spanning a roadway having two supports linked in an articulated manner to a cross-member. The cross-member is adjustable for height, for example using a winch operable to move the cross-me... | 01/12/1988 |
| 4294176 | Portable hoist frame The invention is an improved portable hoist frame for use in automotive and other type work that requires a frame from which to hang a hoist to lift automotive components and other objects. The portable frame consists of detachable elements for a knock-do... | 10/13/1981 |
| 4227464 | Gantries Leg structure for portable, height-adjustable gantries is disclosed having an upper, single vertical tubular post member telescopingly received within an open-ended sleeve formed by coupled aligned channel members of lower, break-apart sectional supportin... | 10/14/1980 |
| 4003479 | Hoist and transporting apparatus A hoist and transporting apparatus for lifting and moving disabled persons, such as paraplegics, polio victims, and the like, as from a bed to a chair. The apparatus has a frame structure with an overhead support deck. A boom carrier is rotatably mounted ... | 01/18/1977 |
