Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 7228631 | Contouring shave The invention is directed to a hand tool for cutting shavings from the surface of a workpiece of wood (or other workable material) to shape and make smooth any three-dimensional surface having concave, flat, and/or convex contours. The thickness of the shavings is m... | 06/12/2007 |
| 7210509 | Chipping head A chipping head, particularly a chipping head of a chipping canter, is disclosed comprising a head body having thereon mounted multiple chipping knives that are adapted on the head body in an annular fashion spaced at a distance from each other. Onto the chipping he... | 05/01/2007 |
| 6681692 | Self-adjusting blade A self-adjusting blade for engagement with a moving work surface, comprising a steel strip elongated in a first direction between first and second sides, said strip having an edge section along said first side for contact with said work surface, and said ... | 01/27/2004 |
| 6668463 | Grout removing tool A cutting and grinding tool for removing grout from between tiles comprises a rotatable cutting disc formed with a plurality of radially extending teeth about the circumference of the disc. A drive gear engagable with the teeth is rotated by a power drill... | 12/30/2003 |
| 6568999 | Method and apparatus for cleaning a surface of a microelectronic substrate A method and apparatus for cleaning a surface of a microelectronic substrate. In one embodiment, the apparatus can include a support member having a manifold in fluid communication with a source of liquid and in fluid communication with at least one exit ... | 05/27/2003 |
| 6467121 | Rotary tube scrubber A tube scrubber comprises an elongate body symmetrical about its longitudinal axis, having a central core with threaded stem for connection to a rotary driving device, and a plurality of flexible arms or webs extending outward from the central core and te... | 10/22/2002 |
| 6406358 | Method and apparatus for cleaning a surface of a microelectronic substrate A method and apparatus for cleaning a surface of a microelectronic substrate. In one embodiment, the apparatus can include a support member having a manifold in fluid communication with a source of liquid and in fluid communication with at least one exit ... | 06/18/2002 |
| 5893611 | Roofing removal apparatus A roofing removal apparatus for stripping shingles, roofing paper, tar paper and nails from roof decking prior to replacing and installing new shingles. The inventive device includes a frame having a pair of guide members with tapered ends, a motor having... | 04/13/1999 |
| 5732434 | Container side-wall scraper A scraper is formed by an assembly of upright blades supported by a frame which is fixed over a waste receptacle. Cylindrical containers are scraped by rotation of the container over the assembly of upright blades, the waste products from the containers t... | 03/31/1998 |
| 5644926 | Two-piece scraping blade construction A two-piece blade for use in a scraped surface heat exchanger comprising a larger plastic frame constructed of a plastic material component mixed with a metal component whose presence within a food product is detectable with conventional metal detecting e... | 07/08/1997 |
| 5632090 | Deglazing hand tool A hand tool comprising an angular handle, a circular blade and a hand guard permits efficient removal of caulking in window units.... | 05/27/1997 |
| 5606761 | Telescopic scraper tool A telescopic scraper tool including a first handle. The first handle has a first upper end with a threaded projection and a first lower end. Also included is a second handle. The second handle has a second upper end that is threaded and has a rounded end ... | 03/04/1997 |
| 5363530 | Pipe joint cleaner A pipe joint cleaner device primarily for plastic pipes which after being cut are to be joined together comprising an open tapered cone member having a plurality of sharp raised projections on both the exterior face of such cone and on the interior face t... | 11/15/1994 |
| 5339481 | Scrub brush A scrub brush intended primarily for hands and knees type scrubbing. The scrub brush has a substantially rectangular bristle block body of substantially uniform thickness. The bristle block has a rearward end and a forward end with a forwardly extending s... | 08/23/1994 |
| 5292120 | Golf tool A tool for golf equipment which combines various function and features such as an oval ring for cleaning golf shoe cleats, a golf cleat tightner, a divot repair device, and a golf club shaft rest in a single unit.... | 03/08/1994 |
| 5263221 | Paint scraper A point scraping device having a rotating coil spring which has one end mounted on a rod member having one end adapted to be mounted in a chuck. A rubber core having spring steel wires therein is mounted within the coil spring. The coil spring has rows of... | 11/23/1993 |
| 5178065 | Chambered doctor blade A chambered doctor blade utilizes parallel, axially extending spaced working and sealing doctor blades, together with spaced end plates to define an ink chamber. Free axial ends of the working doctor blade extend beyond the ends of the end plates and remo... | 01/12/1993 |
| 5155912 | Bowling ball tool & kit The improved bowling ball tool kit includes a tool having an elongated shaft with an expanded handle on one end and one of a number of bowling ball finger hole scrapers of differing diameters supplied by the kit. The scrapers are separately releasably att... | 10/20/1992 |
| 5081734 | Floor scraping machine A floor scraping machine includes a mounting plate rotatable about a vertical axis with a plurality of blade holding assemblies. Each assembly includes a blade mount for securing a scarfing blade, and a biasing means acting on the mount for urging the mou... | 01/21/1992 |
| 4920647 | Devices for the removal of caulk from existing caulked joints A caulk bead removal tool for removing caulk and beading from a groove between spaced side-by-side concrete building panels and includes a handle. A U-shaped mounting bracket is mounted at one end of the handle. Fasteners secure a center bracket leg of th... | 05/01/1990 |
| 4890351 | Scrapers, especially for griddles, hotplates and the like A hand scraper for griddles and the like has a support (11) for a blade (12) removably secured by a screw (13) projecting forwardly and downwardly from a handgrip (10), and a guard (14) which is conveniently formed of stainless steel rod, is spaced from t... | 01/02/1990 |
| 4860450 | Surface stripper A stripping device for wall coverings such as wallpaper comprising a hand-held casing (1) housing an electric motor, a gearbox (2) driving an output boss (3) on which is mounted a concave cutting blade (4) having a peripheral cutting edge. The gearbox (2)... | 08/29/1989 |
| 4858264 | Ultrasonic assisted protective coating removal A paint or other protective coating removal arrangement involving the use of reciprocal motion ultrasonic frequency mechanical energy applied to the coating by a variety of tool and abrasive substrate members in the company of surface preparation agents s... | 08/22/1989 |
| 4770712 | Method and apparatus for scraping ice and snow and illuminating a scraping area An ice/snow scraping apparatus and method characterized by an edge-illuminated, light transmitting scraping blade which provides illumination for the interior and scraping edge of a blade, thereby illuminating at least a portion of an area to be scraped f... | 09/13/1988 |
| 4531253 | Cleaning device A cleaning apparatus for contacting a surface to be cleaned comprising a plurality of bent wires mounted with a resilient mounting member and adapted to be moved to a cutting position when the mounting member is rotated or otherwise moved relative to the ... | 07/30/1985 |
| 4498512 | Lumber saw-sizing tool The invention comprises an attachment for a portable hand-tool for the dressing of lumber to obtain roughened or saw-sized surfaces. The attachment comprises a circular disk having a hub to attach it to a portable rotary drive such as a rotary hand-grinde... | 02/12/1985 |
| 4490879 | Scraping tool A scraping tool comprising scraping means adjustably and removably securable to an elongated, rigid handle, the scraping means comprising two rigid metal blades each having a scraping edge, and securing means for attaching one or both blades to the handle... | 01/01/1985 |
| 4486931 | Scarifying machine A scarifying machine is provided with a mounting plate having a plurality of downwardly open wells formed in it adjacent its periphery and that extend above the plane of the plate. Each well is defined and bounded by a pair of downwardly diverging, upward... | 12/11/1984 |
| 4445248 | Rotary stripper This rotary stripper is provided with a cylindrical housing rotatable in one direction. The housing has a plurality of peripheral wall openings through which project arms of flexible blades. Each blade has a longer work engaging flexing arm, and a shorter... | 05/01/1984 |
| 4385412 | Attachment for removing glued-on carpet padding An attachment adapted for mounting on a conventional rotary floor surfacing machine such as a buffer, sander, polisher or the like. The attachment having a plurality of individual wire blades that provide a brush like cutting edge for engaging and quickly... | 05/31/1983 |
| 4377412 | Improved rotary scraper having flexible fingers A rotary scraper device for treating a work surface, comprises a generally cylindrical hollow hub casing having a peripheral wall. The hub casing has a closed end wall and open opposite end with a cover plate removably mounted on the open end of the hub c... | 03/22/1983 |
| 4372242 | Assembly for treating vessel hulls An assembly for cleaning ships' hulls of such marine growth as seaweed, shell etc. is disclosed. The assembly has a frame with rotating brushes, the frame being reciprocally pivotal over the hull in an arcuate direction by being connected to one end of an... | 02/08/1983 |
| 4334334 | Thread cleaning device A thermowell or the like is installed in a pipe or similar member without taking the member out of service by first welding an adapter to the surface of the member at the point where the thermowell is to be installed, connecting a gate valve and hot tappi... | 06/15/1982 |
| 4324017 | Rotary device for treating work surfaces A rotary device for treating a work surface comprises a generally cylindrical hub body having a closed end wall, an open other end, and a rather serpentine endless peripheral wall formed with smoothly merging cylindrical wall sections, curved wall section... | 04/13/1982 |
| 4295274 | Scarifying machine A scarifying tool is disclosed suitable for use in conjunction with disc floor maintenance machines. The scarifying tool includes a support plate with a plurality of resilient or flexible members attached thereto. The flexible member may be lightweight sp... | 10/20/1981 |
| 4185350 | Scarifying attachment for floor machine Scarifying or abrading apparatus is designed for attachment to a hand-operated single-shaft rotary floor maintenance machine, the apparatus including a circular attachment plate having a plurality of pairs of radially spaced-apart rectangular holding memb... | 01/29/1980 |
| 4183113 | Rotary scraper An improved rotary scraper having a central rotatable hub and a plurality of scraper members pivotally attached to said hub and extending outwardly therefrom for sliding engagement with and at an angle to a work surface is provided. The scraper members ea... | 01/15/1980 |
| 4148110 | Rotating scraping or abrading tool A rotary scraping or abrading tool in which a rotatable disc has a multiple of guiding bores through which scraping elements are axially arranged. The scraping elements have outer active ends extending beyond the face of the disc facing the workpiece to b... | 04/10/1979 |
| 4137595 | Rotary tool for stripping adhesive carpeting from flooring A rotary adhesive carpeting removal tool has a circular base support member adapted to be coupled to a rotary drive floor finishing machine, against the underside of which base support member is removably secured a circular clamping member carrying a plur... | 02/06/1979 |
| 4106193 | Rotary scraper with non-gouging finger array A rotary scraper including a spool with fingers integral therewith and projecting radially therefrom, with the fingers striking the work surface as the wheel rotates, thereby to impact the work surface; the fingers are arranged in a plurality of comb-like... | 08/15/1978 |
