Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 7264039 | Apparatus for cleaning heat exchanger plates and a bulk material heat exchanger using the same An apparatus removing material accumulated on the exterior surfaces of adjacent heat exchanger plates arranged side-by-side in a spaced relationship in a bulk material heat exchanger and a bulk material heat exchanger incorporating the apparatus is provided. In one ... | 09/04/2007 |
| 6971947 | Airless blaster arrangement An airless blaster arrangement (100) for the surface treatment of objects with blasting agents, comprising an airless blaster (10) consisting of several radially arranged thrower blades (11) which are secured to at least one side disk (14... | 12/06/2005 |
| 6835123 | Centrifugal projecting machine A centrifugally projecting apparatus is provided to allow a liner to be easily exchanged, to prevent projecting members from projecting through the connected parts of the liner components, and to prevent an impeller cover from being abraded. The apparatus comprises ... | 12/28/2004 |
| 6319101 | Shot-blasting machine for cleaning a linear metal element A shot-blasting machine for cleaning a linear metal element, such as a metal rod, a metal wire and the like. The shot-blasting machine is arranged in line with a drawing machine so that continuous process is provided. The shot-blasting machine is enclosed... | 11/20/2001 |
| 6042458 | Turn base for entrained particle flow An entrained particle flow turning device capable of turning entrained particle fluid flow about an abrupt turn without significant particle size and mass degradation provides significant improvement as part of a complete particle blast system. The turnin... | 03/28/2000 |
| 5779524 | Adjustable cage assembly for mobile surface abrading apparatus An adjustable cage assembly for selectively varying the path of abrasive in an abrasive blast swath produced by a mobile surface abrading apparatus. The adjustable cage assembly operates in cooperation with a rotable wheel having multiple, radially-extend... | 07/14/1998 |
| 5779523 | Apparatus for and method for accelerating fluidized particulate matter A fluid jet accelerator/pressurizer apparatus for accelerating and pressurizing a fluidized stream of particulate matter, e.g. for ice blasting, has a nozzle housing defining a main conduit, forming a passage for the flow of the fluidized stream through t... | 07/14/1998 |
| 5688162 | Blast wheels and cages for blast wheels A blast wheel assembly has a bladed rotor and an impeller which rotate together. A cage has an axial and angular wall including an aperture through which in use particulate material passes. The cross section of the aperture is irregular to control the uni... | 11/18/1997 |
| 5498197 | Hand-held blast cleaning machine A hand-held blast cleaning machine having a motor which serves as a handle. The machine includes a blast assembly for propelling abrasive material against a surface and a hopper for supplying abrasive material to the blast assembly. The blast assembly has... | 03/12/1996 |
| 5107629 | Texturing of acoustical mineral fiberboard with wheel blast machine A method for texturing the surface of an acoustical fiberboard by utilizing a wheel blast machine. The fiberboard is conveyed through a housing wherein at least one first centrifugal blasting wheel throws abrasive particles at a portion of the fiberboard ... | 04/28/1992 |
| 5107633 | Method and apparatus for cleaning pipe A method and apparatus for cleaning the outer periphery of a pipe (10) by a carriage (28) travelling along the pipe (10). A housing (58) supported from an upper support frame (56) of the carriage (28) includes a pair of housing halves (58, 60) pivotally c... | 04/28/1992 |
| 4922664 | Liquid sand blast nozzle and method of using same A method and apparatus is disclosed for using a nozzle to propel abrasive particles with high pressure water. The nozzle has a straight line path for a constant flow rate of air and abrasive particles to a propulsion chamber. A water path through the nozz... | 05/08/1990 |
| 4561220 | Portable abrasive throwing wheel device This relates to a portable abrasive throwing wheel device or abrasive blasting device which is utilized for blasting castings and the like to effect the cleaning thereof. The portable device is of such a construction whereby its total weight is on the ord... | 12/31/1985 |
| 4064656 | Device for blasting large and bulky workpieces Apparatus for blasting particulate material onto workpieces wherein the workpiece is positioned within an enclosure, and a centrifugal impeller of a conventional type is supported in the enclosure on mobile mounting means for movement in a plurality of di... | 12/27/1977 |
| 4004374 | Descaling bent rod with separated cleaning particles A method of descaling a rod comprises forming at least one bend in the rod and rotating the bent portion in an appproximately circular path while maintaining it in a space having a distribution of separated cleaning particles therein in a suspended relati... | 01/25/1977 |
| 4001976 | Apparatus for cleaning casting An apparatus is disclosed for removing molding sand from a cast part. The apparatus includes an open framework vibratory mechanism for causing movement of the molded parts through a tunnel-like member. This movement shakes and jolts the parts to loosen sa... | 01/11/1977 |
| 3977128 | Surface treating apparatus An improved abrasive throwing machine comprises an enclosure having means therein for projecting abrasive particles at an inclined angle relative to a surface to be treated. The improvement comprises rotatable means within the enclosure capable of propell... | 08/31/1976 |
| 3934374 | Sand reclamation system A sand reclamation system is disclosed for reconditioning and sizing sand utilized in precision molding. The system includes particulate blasting wheels for breaking down the sand molds and reducing them to discrete particles. A conveyor, a first air wash... | 01/27/1976 |
