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| Number | Title | Issue Date |
| 8371035 | Combined set of interacting instruments A combined set of interacting instruments for constructing and analyzing mathematical figures includes a ruler, an adjustable triangle assembly, a compass and a protractor. The ruler includes an elongated strip of rigid or semi-rigid plastic having a length, width a... | 02/12/2013 |
| 8191269 | Line gauge device for auto body repairs A line gauge device for constructing lines and contours on auto body components featuring a first pivot arm and a second pivot arm pivotally connected via a pivot component. The pivot arms can pivot toward and away from each other. The pivot component is biased to p... | 06/05/2012 |
| 8132333 | Pair of compasses Pair of compasses, having a first compass portion and a second compass portion which are connected together via a hinge having a locking device, which hinge comprises a hinge member mounted rotatably relative to the first or second compass portion, the locking devic... | 03/13/2012 |
| 8042278 | Compasses writing implement A compass writing implement includes a compass body having two compass legs mutually pivotable between closed and splayed-out states. A writing lead is mounted in one of the compass legs. A protective cap is or can be fitted onto the free end of at least the compass... | 10/25/2011 |
| 7937843 | Compass having a leg joint and information bearing surfaces A compass includes two legs having upper ends interconnected in a leg joint and lower ends with holders for refills or styluses. An adjusting spindle penetrates the legs, in particular, in vicinity of the leg joint. The legs have carrier zones in the form of widenin... | 05/10/2011 |
| 7640671 | Measuring compass A measuring compass is disclosed. The compass comprises a marking leg, a pegging leg which symmetrically form into a shape of a pencil. The upper end of the pegging leg and the marking leg is a center plate or gear module, and the bottom end is a protective cover fo... | 01/05/2010 |
| 7490410 | Pivot pencil The “Pivot Pencil” is a writing instrument: carpenters pencil, mechanical pencil, pen, marking pen, etc; A Pivot Swivel Joint inserted into the center of the Wooden Outer Casing that “allows the tool to pivot in various angles”, which allows the pencil acces... | 02/17/2009 |
| 7360264 | Patient immobilization device with diagnostic capabilities A patient immobilization device for immobilizing a patient and performing a diagnostic evaluation of such patient is comprised of a backboard, a structure configured to support the head of a patient on the backboard, and a pupil-sizing indicator positioned on a surf... | 04/22/2008 |
| 7316506 | Dual temperature indicator stick holder An apparatus to combine temperature indicator sticks used in the welding, metal fabrication, and heat treatment industries and capable of identifying at least two given temperatures is disclosed. The apparatus includes a first temperature indicator stick aligned alo... | 01/08/2008 |
| 7254855 | Multi-purpose hand tool and scribing apparatus utilizing multi-purpose hand tool A multi-purpose hand tool has a first member having a first portion and a second portion. A second portion member is slidably and pivotally coupled to the second portion of the first member. A coupling assembly pivotally couples the second member to the second porti... | 08/14/2007 |
| 7204124 | Sheet material detecting device A sheet material detecting device for identifying the material of a sheet by utilizing an impact applied to the sheet has an impact applying unit which is supported to be rotatable and shiftable toward the sheet, and applies an impact onto the sheet, an impact recei... | 04/17/2007 |
| 7188427 | Multi-task protractor A multi-task protractor apparatus having the capabilities of a rotating protractor, adjustable triangle, ruler, miniature leveler, framing square and roof angle finder is disclosed. The multi-task protractor accurately measures angles and slopes and provides two str... | 03/13/2007 |
| 7108439 | Flexible barrel writing instrument A writing instrument having a retractable ball point pen with a metallic coil or spring barrel which permits the instrument to bend, a cushion or textured grip, inner and upper sleeves to provide a housing for the ends of the ink refill cartridge, a click mechanism ... | 09/19/2006 |
| 7096592 | Method and apparatus for locating hole positions on an adjustable stair stringer A stairway can be constructed by using movable tread/riser supports placed along a stairway stringer and the supports can be moved as a group or individually to accommodate a stairway slope of any desired degree. It is desirable to mark a stringer for the uniform eq... | 08/29/2006 |
| 7024792 | Measuring tape holding tool A holder and guide for a measuring tape and a process of making and using the holder. The holder is made up of a hollow tube having a rectangular cross section. The tube has a slit or gap running the length of the tube to enable a measuring tape to be inserted. A ma... | 04/11/2006 |
| 7017683 | Cutter for tunnel boring machine A cutter for a tunnel boring machine is equipped with a cutter body (1) with a slanting surface (2), a cylindrical contact surface (12) and a preferably tapered threaded portion with specially designed threads (6), a clamping ring (4 | 03/28/2006 |
| 6981328 | Compass and ellipsograph for persons with manual limitations A safe, stable compass for making circles and ellipses, having a stable rotating platform with a variably adjustable arm that allows the device to be self-supporting upon a surface and to be easily rotated in any one of a variety of directions around a single rotati... | 01/03/2006 |
| 6978550 | Protractor and ruler combination A protractor and ruler combination includes a main ruler having a side formed with a protractor, a secondary ruler rotatably mounted on the main ruler, and an auxiliary ruler having a side secured on the secondary ruler, so that the secondary ruler is moved in conce... | 12/27/2005 |
| 6964103 | Retractable point compass There is provided a compass assembly that includes a first member pivotally connected to a second member at a common end. The first member has an anchor point opposite the common end, and the second member retains a marking device opposite the common end. The compas... | 11/15/2005 |
| 6941605 | Multi-purpose hand tool and scribing apparatus utilizing multi-purpose hand tool A multi-purpose hand tool has a first member having opposite main surfaces and an elongated slot extending through the the main surfaces. A second member is slidably and pivotally coupled to one of the main surfaces of the first member. The second member has opposit... | 09/13/2005 |
| 6923730 | Putting stroke training device A putting stroke training device has two adjustable arms, each joined to an elevated arch at the “closed end” of the device. Preferably, the elevated arch is of sufficient dimensions to allow a golf ball to travel underneath and through the arch. Each arm may be... | 08/02/2005 |
| 6918720 | Circle forming attachment for hand held power tool A circle forming apparatus (100) for a power tool and a method for using the apparatus provides for the formation of circles or circular apertures in a workpiece. A first arm (104) and second arm (106) are rotatably coupled, and a fastener allow... | 07/19/2005 |
| 6907674 | Electrical conduit layout template A template provides a quick and accurate method for marking locations of conduit entry holes to be formed in an electrical panelboard. The template is a rectangular sheet that is divided into longitudinal spacer zones, transverse spacer zones, a longitudinal marking... | 06/21/2005 |
| 6907669 | Drawing compass A drawing compass with a structure of L shape and a method of using the same provide improved single-hand manipulation and handling of drawing an arc or circle. The drawing compass comprises a handle rotatably mounted on one end of an arm and a pivot pin holder slid... | 06/21/2005 |
| 6886263 | Auxiliary drafting instrument combination applicable to digital board Auxiliary drafting instrument combination applicable to digital board, including a base seat formed with at least one pivot hole; a compass having a pivot seat for pivotally connecting two legs, a bottom end of one of the legs being snugly pivotally fitted in the pi... | 05/03/2005 |
| 6871406 | Protective member for compass pins A protective member is provided for a compass device including two pivotably connected legs wherein one leg has a distal end including a projecting pin. This end also includes matching elongate slots in opposed surfaces and matching spaced grooves formed in these op... | 03/29/2005 |
| 6497051 | Digital measuring device A measurement device having a pair of legs. Each leg has a measurement point and a fulcrum end, the fulcrum ends providing a pivot point for the legs so that the measurement points arcuately move apart from one another. The measurement device has a transd... | 12/24/2002 |
| 6430819 | Sport measuring apparatus A measuring apparatus for identifying the boundaries and indicia of a basketball court or street hockey rink, respectively. In a first embodiment, the measuring apparatus comprises the combination of an elongate measuring strip and the casing for containi... | 08/13/2002 |
| 6363622 | Multipurpose retractable tape measure A tape measure usable for positioning and repositioning an object on a vertical surface comprises a housing having a planar forward surface, a rearward surface spaced from the forward surface, and a cavity having an aperture therein. A flexible, retractab... | 04/02/2002 |
| 6311404 | Retractable safety mechanism and compass and method of using the same A compass assembly, a system and a method of using the compass assembly are provided. The compass assembly has a removable marking device attached to one of the legs. The other leg contains a retractable sleeve having a spring and engaging pin therein. In... | 11/06/2001 |
| 6233835 | Scribe/guide tool adapted for stair construction A scribe/guide tool used as a compass and to layout stair stringers. The tool is also used in conjunction with a straightedge or a rule to function as a compass, and is most often used in pairs. A scribe means is removably inserted into the body of the to... | 05/22/2001 |
| 6167628 | Carpenter's gauge A carpenter's gauge for use as a marking gauge or a compass includes a compass bar, a pin carrier, and a marking instrument holder. The compass bar is an elongated bar having a slot formed along its center. The pin carrier slides along the compass bar and... | 01/02/2001 |
| 6003231 | Compass with adjusting means A compass with an adjusting mechanism for adjusting the compass legs and for changing the distance between the compass points, wherein each compass leg includes a pivot bearing and an adjustment bearing. Each compass leg is constructed as a two-armed leve... | 12/21/1999 |
| 5979066 | Compass The compass according to the invention comprises a compass top and two compass legs (1,2) mounted rotatably in the compass top, the compass top comprising two top-halves (3,4). Provided in each compass-top half is a bearing pivot (19) for respectively bea... | 11/09/1999 |
| 5894671 | Compass with angle trisecting capability A new geometric instrument-compass for a practical use that allows the trisection of an arbitrary angle as well as retains its effective functionality for operations that can be performed by the conventional compass is disclosed. The design proposed makes... | 04/20/1999 |
| 5870830 | Conic section compass Conic Section Compass (CSC) is a hand-held drawing device. It applies a mathematics concept. CSC can be used to draw circles, ellipses, parabolas, hyperbolas or make surface curvatures of these types. Given a specific mathematics formula of the mentioned ... | 02/16/1999 |
| 5630278 | Circle compass A device for forming circles that includes a first member which is rotatably attached to a second member. The first and second members include a first peripheral section and a second peripheral section, with one of the sections being arcuate. The first pe... | 05/20/1997 |
| 5555630 | Compass with safety pivot A compass (1) with safety pivot is disclosed for drawing arcs or complete circles on a surface without perforating it and in an absolutely safe manner for young users. The safety pivot of said compass has a rounded end at the end of a pin (8) housed in th... | 09/17/1996 |
| 5546663 | Compass having a squat tip FIG. 1 shows a drawing instrument which is in chain dotted lines except for a lower portion of one leg of the instrument. The leg is formed generally of plastics and has a metal end piece provided with a non-needle-like or squat conical tip or point which... | 08/20/1996 |
| 5542185 | Device for describing arcs The present invention is directed to a device for describing arcs. The device includes a pair of legs connected at a pivot joint. A shoe is disposed at the end of one leg to support the device and maintain the center point of the arc while the device is u... | 08/06/1996 |
