In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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| Number | Title | Issue Date |
| 7883289 | Retainer for printed circuit boards A printed circuit board retaining device for use in securing a printed circuit board in an elongated slot of a rack provides an efficient design allowing for the utilization of an off-the-shelf screw in the device. A screw having a head located within a first end pi... | 02/08/2011 |
| 7824125 | Clamping assemblies A self-aligning coupling device for installation in a channel having an open end and a pair of substantially parallel side walls. The device includes an elongate connecting portion having a longitudinal axis, a channel abutment portion, and at least one laterally pr... | 11/02/2010 |
| 7488137 | Sanitary hub assembly and method for impeller mounting on shaft A hub for removable mounting onto a shaft has an inner sleeve having a first end and a second end, and having a substantially cylindrical inner diameter and having an outer surface having a threaded region and a tapered conical surface located substantially near the... | 02/10/2009 |
| 7455471 | Eccentric conical fastening system Fastening systems for parts that endure high vibration shear loads have traditionally been difficult or expensive to produce. This application describes a fastening system with multiple conical surfaces and eccentric offsets. The novel conical fastener system allows... | 11/25/2008 |
| 7401995 | Channel connector A channel connector comprises a main portion having a connecting portion, a clamping element having at least two opposite ends, and a threaded element threadably connecting the main portion to the clamping element. Each of the two opposite ends are spaced to interfe... | 07/22/2008 |
| 7314330 | Bushing system for power transmission products A system is provided for securing two ends of a rotating member, such as a shaft, with respect to a non-rotating member, such as a mounting hub. Inner and outer sleeves have tapered surfaces and are positioned about the rotating member and provided within a bore of ... | 01/01/2008 |
| 7309187 | Releasable keyless bushing assembly A releasable self-centering keyless bushing assembly connects two machine elements, such as a hub to a shaft. The assembly includes an outer ring having two tapered inner peripheral surfaces, wherein each of the tapered surfaces has a different taper angle, and an i... | 12/18/2007 |
| 7305767 | Shaft and hub mounting system and method A system is provided for securing a rotating member with respect to a non-rotating member. A hollow member, such as a mounting hub or an inner ring of a bearing assembly, includes an extension having an annular outer groove. One or more tapered sleeves serve to lock... | 12/11/2007 |
| 7278653 | Wheelchair, particularly electric wheelchair Disclosed is a wheelchair, particularly an electric wheelchair, comprising a frame (20), at least one steerable wheel (3), two non-steerable wheels (5) which are connected to the frame (20) at a wheelbase (R), and a seat (10) that ... | 10/09/2007 |
| 7229230 | Tube connectors A tube connector includes an anchor body having a lengthwise through-passage and a bolt head cavity. The through-passage and bolt head cavity are open to a side of the anchor body. One end of the anchor body has a tool-access opening and the other end has a tapered ... | 06/12/2007 |
| 7207741 | Bushing system for power transmission products A system is provided for securing two ends of a rotating member, such as a shaft, with respect to a non-rotating member, such as a mounting hub. Inner and outer sleeves have tapered surfaces and are positioned about the rotating member and provided within a bore of ... | 04/24/2007 |
| 7197806 | Fastener for variable mounting A fastener assembly comprising a first wedge portion having an angled end, a second wedge portion having an angled end, and a fastener extending through the first wedge portion and the second wedge portion, wherein a portion of the fastener protrudes from one of the... | 04/03/2007 |
| 7178274 | Coupling arrangement A coupling arrangement for securing two separable components in an excavating operation includes a wear component, a base component and a lock. The lock has a body having a configuration adapted to be received in a hole in the base component, and a rotatable locking... | 02/20/2007 |
| 7174661 | Releasable coupling assembly A lock that includes a wedge that is used to releasably secure separable components of an assembly together. The wedge can be used with a spool. The wedge and spool are threadedly coupled together to drive the wedge into and out of an opening in the assembly without... | 02/13/2007 |
| 7171771 | Releasable coupling assembly A lock that includes a wedge and a spool are used to releasably secure separable components of an assembly together. The wedge and spool are threadedly coupled together to drive the wedge into and out of an opening in the assembly without hammering or prying. The di... | 02/06/2007 |
| 7165347 | Assembly for securing a wear member to an excavator An assembly for mounting an excavating tooth particularly suited for a dredge cutterhead includes a base, an adapter, and a lock. The base includes a convex, curved bearing surface that abuts a concave, curved bearing surface on the adapter. The curved bearing surfa... | 01/23/2007 |
| 7137617 | Composite tensioning members and method for manufacturing same A composite tension member. The composite tension member is assembled from a number of composite rods, each having two ends. A wedge plug is formed around the ends of the composite rods. The wedge plugs are inserted into termination fitting having a termination fitt... | 11/21/2006 |
| 7131560 | Portable beer keg tap and dispenser A lightweight beer dispensing system comprising a small carbon dioxide pressure bottle attached directly to an adjustable pressure regulator that can be set to avoid excess foaming is attached directly to a keg tap having a delivery faucet. The invention taps a full... | 11/07/2006 |
| 7077417 | Connecting device A connecting device for connecting an accessory to a hitch receiver with an outward end defining an opening. The connecting device has a base with a body portion receivable in the hitch receiver. The body portion is adapted for coupling with the hitch receiver to lo... | 07/18/2006 |
| 7051806 | Internal slip connector An internal slip connector useful for attaching tools or other devices to the inside wall of a conduit, the connector having a mandrel with a head end, a threaded end, a reduced-diameter shaft section disposed between the head end and the threaded end, two abutting ... | 05/30/2006 |
| 7037026 | Method for mounting a sleeve on a shaft and a sleeve device for such mounting A method for mounting an axially split sleeve provided with an axial slot on a shaft so that a tapering surface on the sleeve cooperates with a tapering bore of a machine member. A flange is axially connected to the sleeve and supports a number of spaced apart tight... | 05/02/2006 |
| 7037027 | Bolted connection of two components with alignment compensation in three dimensions A connection arrangement accommodates misalignments in three dimensions, and achieves a positive fixed connection between two components. A threaded standoff with a first bolt hole therein is partially screwed into a threaded hole in the first component and protrude... | 05/02/2006 |
| 6974194 | Wheel mount assembly A wheel mount assembly adapted for use in securing a camber tube to a wheelchair frame comprises an axle plate, at least one axially displaceable member adapted to be fixed in relation to the axle plate, and at least one radially displaceable member adjacent the axi... | 12/13/2005 |
| 6969211 | Tubular frame structure connector system A multi-tubular connector apparatus comprising a connector body having a shoulder portion substantially matching the outer profile of a tubular member and an open fastener shaft through the body. Connecting slots within the shoulder portion have open ends within the... | 11/29/2005 |
| 6939053 | System and method for mounting a shaft within a hollow member A system is provided for securing a rotating member with respect to a non-rotating member. A hollow member, such as an inner ring of a bearing assembly, includes an extension having an annular outer groove. A tapered sleeve serves to lock the hollow member about a m... | 09/06/2005 |
| 6893185 | Deformable wedge clamp assembly A deformable wedge clamp assembly includes a body having first and second apertures formed therein, the first aperture being suitable for receiving a fastener and the second aperture being suitable for receiving a member to which the body is to be attached and a wed... | 05/17/2005 |
| 6860672 | Reinforcing bar coupling A reinforcing bar coupling is provided for simply and quickly applying to a mechanical butt joint of two bars in the concrete constructions. The reinforcing bar coupling is consisted of a cylindrical sleeve (2) formed an uneven inner surface (22) to ma... | 03/01/2005 |
| 6851331 | Tilt steering apparatus A tilt steering apparatus comprises a lock lever rotatable around the axis of a supporting shaft. When a lock lever is rotated around the axis of the supporting shaft, a cam surface is rotated relative to a cam follower. As a result, the cam surface presses the cam ... | 02/08/2005 |
| 6837646 | System for installing underground pipe A tensioning apparatus for operably applying forces to inner surfaces of a hollow body includes a bracing nut having a first receptacle portion and a bracing portion, an axially movable rod that is operably coupled to the bracing nut such that a first portion of the... | 01/04/2005 |
| 6835021 | Trailer accessory stabilizing device A trailer accessory stabilizing device for inserting into a motor vehicle trailer hitch receiver, said device comprising a shank member and a wedge member adapted for insertion into said hitch receiver, each member having abutting edges that align along a compound m... | 12/28/2004 |
| 6813984 | Attaching device A device for attaching two units (17,18) provided for rotation in unison about an axis, having axial and radial attachment of the units relative to each other. The attaching involves first engagement members (28,29) engageable with each other and provi... | 11/09/2004 |
| 6739794 | Key locking device The coupling device is an assembly comprising of three congruently shaped axially extending parts with mating wedge-like angular cuts intended to cause said parts to expand in a direction of the minor width when a screw type fastener pulls the two outer members toge... | 05/25/2004 |
| 6729052 | Assembly for securing an excavating tooth An assembly for mounting an excavating tooth particularly suited for a dredge cutterhead includes a base, an adapter, and a lock. The base includes a convex, curved bearing surface that abuts a concave, curved bearing surface on the adapter. The curved bearing surfa... | 05/04/2004 |
| 6729287 | Connection between a shaft end of a gas exchange valve in an internal combustion engine and a sleeve-shaped control piston on a tappet A connection between a shaft end of a gas exchange valve of an internal combustion engine and a sleevelike actuating piston of a valve actuator, has at least two shell-like key pieces, surrounding the shaft end and on whose radially outer circumferential surface the... | 05/04/2004 |
| 6712544 | Device for clamping two components in a spaced relationship A device (1) for connecting first and second components (2, 3) which lie at a spacing from one another by clamping by a spacer (7), which is disposed in a spacing region, and a clamping piece (15) which clamps the two components (2, 3 | 03/30/2004 |
| 6695524 | Mount locking plate A mount locking plate with the mount locking plate including plate members for fixedly securing to a support surface and a pair of longitudinally displaceable complementary members that can be laterally positioned proximate the plate members. The compleme... | 02/24/2004 |
| 6666615 | Spacer and parts attachment device A spacer includes a first cam having an inclined cam surface and a second cam having an inclined cam surface. The overall length of the two cams can be changed by contacting the cam surfaces together to move the cams relative to each other.... | 12/23/2003 |
| 6616412 | Tapered polygon coupling A tapered polygon coupling for an impeller and shaft. The shaft has a tapered bore having a polygonal cross-section. The impeller includes a corresponding tapered polygon plug configured to be placed in the bore of the shaft. A fastener is provided for se... | 09/09/2003 |
| 6609765 | Adjustable wheel and axle assembly for a work vehicle An adjustable wheel and axle assembly has a two piece inner element with inner and outer tapered portions. A wheel hub having a two-tiered tapered interior bore with one tapered portion engaging the inner element while the other tapered portion is radiall... | 08/26/2003 |
| 6599052 | Hub and shaft coupling system A technique is disclosed for removably coupling a shaft and hub to one another. The hub includes a pair of tapered regions near ends of its inner peripheral surface. The shaft may be tapered in a region designed to contact one of the tapered surfaces, or ... | 07/29/2003 |