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 |
| 8002363 | Quick release structure for front wheel of baby stroller A quick release structure for front wheels of baby strollers includes an upper mount disposed on one leg support thereof. A fixing pin is arranged on the upper mount for inserting into a locking hole on the leg support. Moreover, a lower mount assembled with a wheel... | 08/23/2011 |
| 7712843 | Structure of a foldable front wheel of a golf cart A front wheel of a golf cart includes a supporting component, a round rotating member, and a joining shaft coupling the rotating member to the supporting component; the supporting component includes a holding part, which has an outer stopping protrusion, a polygonal... | 05/11/2010 |
| 7367745 | Securing assembly for use between a bike trailer and a bike A securing assembly for a bike and a bike trailer includes a securing body provided with a gap defined in the securing body and composed of two plates each provided with an elongated hole and a cutout to respectively correspond to and align with the elongated hole a... | 05/06/2008 |
| 7364171 | Front wheel assembly for baby strollers A front wheel assembly for baby strollers includes a positioning member connected to a front frame of the stroller and a connection unit is inserted into the positioning member. A connection piece has two ends respectively inserted into the positioning member and a ... | 04/29/2008 |
| 7360781 | Foldable wheelchair and axle plate therefor A foldable wheelchair comprises a substantially horizontally extending upper side frame member. An upper end of an axle plate is secured to the upper side frame member. An axle housing is secured to the axle plate. A cross brace is pivotally secured directly to the ... | 04/22/2008 |
| 7246444 | Cutting tool with guide member clamping means A cutting tool that improves operability by facilitating operation of a lever for operating a clamp mechanism of a guide member is provided. A clamp mechanism is constituted by a clamp pin that protrudes its distal end to the outside of the blade case while penetrat... | 07/24/2007 |
| 7219920 | Easily detached and assembled golf cart with auxiliary wheel An easily detached and assembled golf cart with an auxiliary wheel comprises: a frame having an upper end, a lower end, and a mid-frame pivot; a first wheel rotatably fixed to the first wheel supporter and a second wheel rotatably fixed to the second wheel supporter... | 05/22/2007 |
| 7213830 | Detachable device for auxiliary wheel of golf cart A detachable device for an auxiliary wheel of a golf cart includes a main body, an auxiliary wheel unit, and a drive handle. The auxiliary wheel unit includes a wheel support rack, and auxiliary wheel and a plastic block. The auxiliary wheel unit is mounted on and d... | 05/08/2007 |
| 7185901 | Golf cart spindle A golf cart spindle to allow mounting of a larger wheel and tire combination on a golf cart. The spindle having a spindle body which includes a top end and a bottom end, the spindle body including a bolt channel between the top end and bottom end of the spindle body... | 03/06/2007 |
| 7165815 | Wheel assembly for garden shears A wheel assembly includes a main body, two wheels, two positioning shafts, and two retaining rods. In practice, the retaining portion of each of the retaining rods is urged on the positioning plates of the respective positioning shaft to position the locking portion... | 01/23/2007 |
| 7147242 | Folding mechanism for a front wheel of a golf cart A golf cart includes a frame including two parallel rods, a front wheel, and a mechanism used for displacing the wheel between stretched position and folded one; the mechanism includes two locating members secured to the rods, and a wheel support, which has two bars... | 12/12/2006 |
| 7087540 | Resorbable bone replacement and bone formation material The invention relates to a resorbable bone replacement and bone formation material (augmentation material) based on porous β-tricalcium phosphate (β-TCP). ... | 08/08/2006 |
| 7070246 | Wheel device with quick-releasing mechanism A wheel device with quick-releasing mechanism comprises a wheel body and an U-shaped movable member. The wheel body further has two tabs and an elastic element. The movable member further includes a first board having a first wall surface and a second wall surface e... | 07/04/2006 |
| 7059625 | Rehabilitation stroller A stroller, in particular a rehabilitation stroller, having a front frame which extends upward to the rear, at an angle | 06/13/2006 |
| 7021640 | Wheelchair and wheel mounting assembly therefore An improved adjustable wheel mounting assembly comprises a connecting member and a wheel-mounting member. The connecting member extends generally upwardly and downwardly between wheelchair frame members and is adapted to be secured thereto. The wheel-mounting member... | 04/04/2006 |
| 7017938 | Transport trolley A transport trolley for transporting goods and/or people, especially for transporting children. The trolley has a trolley frame including shoring elements and at least two wheeled devices provided on the frame and including wheels for rolling the transport trolley i... | 03/28/2006 |
| 7012034 | Resorbable bone replacement and bone formation material The invention relates to a resorbable bone replacement and bone formation material (augmentation material) based on porous β-tricalcium phosphate (β-TCP). ... | 03/14/2006 |
| 7011321 | Quick release detachable wheels A quick release detachable wheel hub assembly is shown for a lightweight manual wheelchair. The wheelchair wheels mount on exterior hubs and rotate therewith. The inner face out of each of the exterior hubs mates with an opposing outer face of interior hubs. One of ... | 03/14/2006 |
| 7004670 | Manual disconnect apparatus and method A retrofitable manual disconnect apparatus includes an output shaft engagement member (20) that couples to the output shaft (13) of a powered movable barrier operator (12), a movable barrier engagement member (14) that couples to a movabl... | 02/28/2006 |
| 7000928 | Third wheel collapsing device for a golf club cart A third wheel collapsing device for a golf club cart includes a third wheel support frame having a U-shaped frame fixed pivotally with a third wheel and a hollow support arm fitted therein with a fit block. The support arm and the fit block respectively have insert ... | 02/21/2006 |
| 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 |
| 6969078 | Third wheel collapsing device for a golf club cart A third wheel collapsing device for a golf club cart includes a third wheel support unit consisting of a connect base having a fitting member with an upper inclined surface, and a lock block on the upper inclined surface. A spring chamber is continually formed in bo... | 11/29/2005 |
| 6944910 | Caster wheel assembly with anti-flutter control A caster wheel assembly for a wheeled device, such as a wheelchair, includes a housing suitable for connection to a wheeled device, a caster fork configured to mount a caster wheel for rotation, and a caster bolt connected to the caster fork and inserted into the ho... | 09/20/2005 |
| 6938964 | Wheel A journal for coupling a wheel to an axle is configured to be mounted in a bore of the wheel. The journal defines a reception space for receiving an axle. A locking element is pivotally mounted on the journal from a release position in which the axle is removable fr... | 09/06/2005 |
| 6921094 | Wheel of a golf cart A wheel of a golf cart includes a connecting member, a rotary main body, and an axle for the rotary main body; the connecting member can be detached from a support part of a main frame of the golf cart for reducing dimension of the cart in packaging and transportati... | 07/26/2005 |
| 6910742 | Wheel A journal for coupling a wheel to an axle has a main tubular body portion with a reception space for the axle and a separate locking element. The locking element is mounted in a cradle for pivotal movement about a pivot axis from a release position in which the axle... | 06/28/2005 |
| 6854812 | Wheel axle design of gas grill Disclosed herein is a device for mounting a wheel to the tubular frame of a small appliance. The device includes a sleeve having an elongated body with a proximal end, a distal end, a channel running through the sleeve. A flange extends radially outwardly from the p... | 02/15/2005 |
| 6722744 | Quick-release device for a golf cart wheel A quick-release device for a golf cart wheel has a housing, an lock, a locking lever and a latch. A locking cavity is defined in the housing. The lock has a locking arm and is pivotally attached to the housing. The locking lever is pivotally attached to the housing ... | 04/20/2004 |
| 6682152 | Secure wheel locking system A wheelchair wheel locking system reduces the likelihood that a wheel will inadvertently disengage from the wheelchair. An axle is attached to the wheel and has a protrusion for engaging annular grooves within a wall forming an inner passage through an ax... | 01/27/2004 |
| 6641228 | Detachable front wheel structure of golf cart A detachable front wheel structure of a golf cart includes a main frame having a lower portion provided with a front wheel frame, and a quick release device mounted between the main frame and the front wheel frame. The quick release device includes a conn... | 11/04/2003 |
| 6612658 | Trolley cart wheel-axle assembly A heavy duty wheel-axle assembly for industrial trolley carts in which wheel assemblies are mounted at either end of an axle, an inner bearing race of each wheel positively non-rotationally secured to the axle by interengagement of a non-round shaped posi... | 09/02/2003 |
| 6607250 | Caster block and wheel lock for wheelchair A caster block for receiving a caster wheel for a wheelchair, in which a housing defines a central bore and spaced-apart bores for bolts to connect the caster block to the wheel chair. A resilient core in the central bore defines recesses in opposing dist... | 08/19/2003 |
| 6523910 | Wheel axle mounting structure for golf cart A wheel axle mounting structure for golf cart is constructed to include a wheel axle pivoted to a wheel, and a wheel axle holder, the wheel axle holder including a receptacle block fixedly fastened to a golf card frame and cart and adapted to receive one ... | 02/25/2003 |
| 6520594 | Axle plate for a wheelchair and wheelchair therewith A axle mounting plate comprises a main body portion. A first coupling extends from the main body portion. A second coupling extends from the main body portion. The first and second couplings each defines a generally C-shaped saddle. The saddles are genera... | 02/18/2003 |
| 6520598 | Supporting device with position fixing function for front wheels of a stroller A supporting device for a front wheel of a stroller includes a locking member, a supporting member and a control member. The locking member is received in two aligned cylindrical parts of the supporting member, and has two protruding parts at upper portio... | 02/18/2003 |
| 6409284 | Connecting structure of a wheel of a golf carrier This invention relates to a connecting structure of a wheel of a golf carrier, which is provided with a receiver on a connecting link to engage with a connecting protrusion of a shaft of the wheel by using a bolt. The connection of the receiver and the co... | 06/25/2002 |
| 6276759 | Mounting device for mounting a front wheel axle on a stroller frame A mounting device for mounting a front wheel axle on a stroller frame, includes a pair of hollow mounting seats, each of which has an inner side wall formed with an upwardly extending opening and an abutment edge that defines a top end of the opening. Eac... | 08/21/2001 |
| 6273520 | Wheel supporter and shaft for a golf cart A wheel supporter and shaft for a golf-cart includes a wheel shaft having an end portion protruding out of a wheel. The protruding end portion is formed with a recessed circumferential groove of a smaller size in an intermediate portion. The wheel support... | 08/14/2001 |
| 6234582 | Support of a golf cartwheel A support of a golf cartwheel has a holding member, an axle and a curved fastening plate. The axle has an outer end connected to the wheel, and an inner end passed into the holding member. The inner end has two square blocks each received in a respective ... | 05/22/2001 |
| 6152539 | Fixing device for wheel seats of a baby stroller A fixing device for wheel seats of a baby stroller engaged and fixed each with/on one of the wheel seats, it has a fixing rod secured on the bottom of a foot. The fixing rod has one of its ends protruded down and out from a pipe mouth of the foot, the end... | 11/28/2000 |