Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 7281288 | Cleaning apparatus with flexible connection between head and handle An improved cleaning tool is provided with a flexible connection between the head or spindle and the handle. The improved tool broadly includes a spindle or head, a handle and a flexible connection between the head and handle to permit relative pivotal movement ther... | 10/16/2007 |
| 7267358 | Foldable frame with a locking device A foldable frame includes spaced-apart first and second support rods, a first bar having a first end connected pivotally to the first support rod, a second bar having first and second ends connected pivotally and respectively to the second support rod and a second e... | 09/11/2007 |
| 7182042 | Support pole with pipe-hinge slide lock A self-latching hinge mechanism (14) and apparatus (10) for applications where access to a pole mounted device is required. The hinge comprises a top section (28) with a cantilevered tail piece (38) which extends beyond a pivot (36... | 02/27/2007 |
| 7077420 | Foldable three-wheeled jogging stroller A three-wheeled jogging stroller is movable between a deployed condition and a folded condition. Among other features, the stroller includes a forward member, a rear member, and a handle member that is rotatable to move the stroller from the deployed condition to th... | 07/18/2006 |
| 7070198 | Folding support member of handlebars of a cart for a person to ride on A cart has a folding support for handlebars, which includes a lower rod secured on a front part of a frame, a pivotal rod pivoted to an upper end of the lower rod, and an upper tube positioned in a linearly displaceable manner around the pivotal rod from a lower end... | 07/04/2006 |
| 7051503 | Crop divider A crop divider for a harvesting assembly is provided with a foldable deflector. The deflector is mounted to the harvesting assembly by a pivot link having a pivot axis. The deflector can be folded about the pivot axis between an operating position and a transport po... | 05/30/2006 |
| 6758624 | Coupling device incorporating a security feature Presented is a trailer incorporating a device that allows the detachable coupling of the ball coupler and safety chains of a trailer for remote storage of these items, while incorporating a security feature that allows only the original ball coupler and safety chain... | 07/06/2004 |
| 6752413 | Baby carriage holding mechanism for a folding baby carriage A casing (32) included in a baby carriage folding mechanism is mounted on a substantially middle part of the handle of a folding baby carriage. Hinged joints (33) each having a stationary member (34) and a movable member (35) are connecte... | 06/22/2004 |
| 6499905 | Apparatus for pop-up display structures An apparatus for a pop-up display structure that provides a hub structure that is divided into two sections that are held together by a thumbscrew. The two sections define internal channels in the hub for capturing guide pins attached to the tubes such th... | 12/31/2002 |
| 6422587 | Baby carriage folding mechanism for a folding baby carriage A casing (32) included in a baby carriage folding mechanism is mounted on a substantially middle part of the handle of a folding baby carriage. Hinged joints (33) each having a stationary member (34) and a movable member (35) are connected to the opposite... | 07/23/2002 |
| 6422586 | Stroller latch apparatus A wheeled stroller comprising a frame movable between a use position and a storage position, having a latch member arranged to pivot about an axis of rotation and move axially between a latched position securing the frame in the use position and an unlatched p... | 07/23/2002 |
| 6302613 | Pivot connector for a foldable stroller frame A pivot connector for a stroller frame includes a mounting seat formed with elongated slots, a pivot plate disposed in and pivoted to the mounting seat, an operating member straddling over the mounting seat, a locking pin mounted on the operating member a... | 10/16/2001 |
| 6298629 | Safety line anchorage assemblies An anchorage kit 100 includes components which may be assembled in various ways to provide anchorages 101-107 suitable for connection in series between a safety line and any of various structural members. The kit 100 includes opposing brackets 120, 140 wh... | 10/09/2001 |
| 6202229 | Joint of a foldable bed for babies A joint of a foldable bed for babies comprises a main body, a pressing block and two supporting members. The main body has two side plates connected by an intermediate curved portion. The pressing block is slidably fitted in the main body. The supporting ... | 03/20/2001 |
| 6102431 | Collapsible baby stroller and releasable locking and folding mechanism therefor A baby stroller for transporting an infant over flat, rough, or uneven terrain at speeds faster than normal walking speed is disclosed. This baby stroller can be folded to make it easier to stow and transport. The folding mechanism, a unique feature of th... | 08/15/2000 |
| 5964545 | Folding device for a playyard A folding device mounted between two sections of one rail of a playyard to achieve a folding of the playyard is disclosed. The folding device includes a sheet body bent to integrally form front plate, a rear plate opposed to the front plate and a middle a... | 10/12/1999 |
| 5845962 | Foldable chair A foldable chair has a seat support, a seat plate disposed on the seat support, a first support pipe disposed beneath the seat support, a second support pipe disposed beneath the first support pipe, a first knuckle connected to a first end of the first su... | 12/08/1998 |
| 5791360 | Stable tubular crutch with adjustable hand grip A stable tubular crutch having a continuous one piece body, with an adjustable hand grip and riveted underarm support. The crutch is made of a tubular member, bent to form an elongated, flattened, fully enclosed, ovate structure with parallel spaced apart... | 08/11/1998 |
| 5775460 | Hinge and ladder A hinge and a reconfigurable ladder having at least one pair of hinges is disclosed. The ladder has stile sections connected together by the hinges. The hinges consist of two hinge members mountable to ends of respective stile sections. A hinge cover exte... | 07/07/1998 |
| 5730542 | Joint for a playen A joint for a playpen includes a main base, two wing base at two sides of the main base and fixed with two frames of a playpen, a press block, and two plate hooks. The two plate hooks, fixed on the press block, have two barbs to engage a position pin of e... | 03/24/1998 |
| 5624199 | Setting device for a joint A setting device for a joint comprises a box-like body with a U-shaped opening therein, a lower tube fixedly secured in the opening, an upper tube pivotally secured in the opening, a plurality of location holes defined through a face of the body in a semi... | 04/29/1997 |
| 5617592 | Bending joint of a collapsible baby playing bed The present invention relates to a bending joint of a collapsible baby playing bed, which comprises: two inner tooth members each having a tubular portion connected with an upper frame of the bed, and teeth; two fitting blocks each having teeth engaged wi... | 04/08/1997 |
| 5572836 | Rotational flagpole Disclosed is a rotational flagpole pivotally mounted to a rigidly affixed base with a tongue and slot combination that enables the flagpoles to rotate around the pivot. The flagpole can also be locked in place to prevent rotation. The rotational flagpole ... | 11/12/1996 |
| 5485655 | Hinge device for armrails of a playpen A hinge device for armrails of a playpen. The playpen includes an essentially rectangular upper support formed by four pairs of rods each centrally coupled by a hinge device, an essentially lower support formed by four rods each centrally coupled by a hin... | 01/23/1996 |
| 5474404 | Foldable playpen rail assembly A foldable rail assembly includes a first shell including a first wall defining a cutout and two apertures, a second wall defining two apertures and a top formed between the first and second walls. A second shell includes a first wall defining two apertur... | 12/12/1995 |
| 5217315 | Lockable articulating joint and a foldable stretcher frame including same An articulating joint is provided for use in a foldable frame for a stretcher for example, which is capable of being selectively locked against upward, downward, or lateral folding by rotating the joint relative to the folding frame member.... | 06/08/1993 |
| 5178583 | Releasable folding link member for providing opening torque A linkage for rotatably joining two members of a structure together including a rod member (1); a sleeve (8) slideable over a bifurcated, cylindrical end portion of the rod member; a link member (3) pivoted within the ends of the said end portion and havi... | 01/12/1993 |
| 5118127 | Hitch device for interconnecting mobile apparatus in tandem The invention is a hitch device for interconnecting two mobile apparatus, such as a hospital gurney and an IV stand. The hitch device comprises a body having first and second ends, each end having a coupling for attachment to a mobile apparatus, and a mon... | 06/02/1992 |
| 5109938 | Motorized golf cart The motorized trolley-type golf cart of the invention comprises a chassis made up from at least two supports assembled to each other by a swivel type connection device constituted by a male portion and a female portion which are engaged in each other and ... | 05/05/1992 |
| 5101920 | Personal mobility vehicle A personal mobility vehicle including rear and front frame sections which are quickly and easily engageable and disconnectable one to another. The rear frame section has a pair of coaxial rear spaced wheels and a pair of locator pins laterally extending p... | 04/07/1992 |
| 5074012 | Self-locking hold-down clamp A self-locking clamp has a handle which locks to a non-rotating member if the handle starts to turn while in clamping use. The clamp has a retractable collar which is splined to the handle and is biased toward locking engagement with a sleeve that in turn... | 12/24/1991 |
| 5018918 | Load restraint bar for cargo vehicles A load bar for extension between opposite side walls of a cargo vehicle to restrain the cargo. The bar includes a pair of main tubes pivoted end to end at a toggle joint. An extension tube has a telescopic fit in one of the main tubes to provide length ad... | 05/28/1991 |
| 4909537 | Universal vehicle for pedaling or the like The vehicle has a chassis formed of a front strut and a seat strut which are attached together so as to be angularly adjustable about a horizontal axis. The seat strut telescopically carries a seat post with a seat thereon. The front strut telescopically ... | 03/20/1990 |
| 4890430 | Device and method for protecting a building against earthquake tremors A rigidity control device is provided to change the natural resonance of an entire building by varying the rigidity of selected structural members such as pillars, beams, braces or floor and pillar, wall and pillar or beam connection members, joints and t... | 01/02/1990 |
| 4831807 | Profile open/fold-up truss A profile open/fold-up truss for use in the building industry comprises: a collapsible roof member; at least one floor beam; a pair of wall studs, each wall stud including top and bottom half studs pivotably connected to opposite ends of the roof member a... | 05/23/1989 |
| 4828278 | Self-supporting/maintaining mechanism of baby carriage A stoppage-maintaining device for maintaining a baby carriage either in a folded or an unfolded state. The handle bar is pivotally connected to a rear leg by a pivoting stoppage-maintaining bar. The stoppage-maintaining bar has two concave grooves on two ... | 05/09/1989 |
| 4753259 | Adjustable folding walking aid A hinge element consists of a tube connector attached to the end of a tube, the end of the tube connector having a notched head portion. Pivotably attached to the notched head of the connector is a bracket element having a spherically shaped, notched end ... | 06/28/1988 |
| 4732403 | Folding moped with a collapsible support for the saddle A folding moped has a collapsible support for the saddle constituted by two parallel pillars with lower jointed end portions which are inserted within two hollow parts fixed to the frame for sliding between an inserted position in which the pillars are he... | 03/22/1988 |
| 4721125 | Height adjustable crutch A height adjustable crutch comprised of a one piece member which can serve as the combination of the bow and the carrier without any bolt and pins used in conventional types for securing them, so the structure of the height adjustable crutch is simpler an... | 01/26/1988 |
| 4715650 | Fully collapsible portable chair A collapsible folding lawn chair is provided. Employing a chair of the folding frame and "sling seat" variety, a second level of compactness is achieved by addition of flexible locking hinges intermediate certain straight members of the frame. The chair r... | 12/29/1987 |