Class 280/239 - Three tandem wheels

Subclass of Class 280 - Land vehicles
Definition: Vehicles which are provided with three wheels in tandem.
No. of patents: 27
Last issue date: 03/11/2008

Number	Title	Issue Date
7341268	Foldable bicycle A foldable bicycle includes a front frame, a rear frame, two seat plates, a middle frame, a seat post, and a handlebar unit. Thus, when the bicycle is folded, the front frame, the middle frame and the rear frame are parallel with other, and the handlebar unit is fol...	03/11/2008
7267351	Frame assembly for a bicycle A bicycle including a frame having a main frame portion and an articulating frame portion pivotally mounted to the main frame portion and carrying a rear wheel of the bicycle. A shock absorber preferably is operably connected between the main frame portion and the a...	09/11/2007
6983947	Bicycle towing device A bicycle towing device which is positioned between a tow bicycle, such as an adult bicycle, and a towed bicycle, such as a child's bicycle, and enables the towed bicycle to function as a one wheeled bicycle trailed behind the tow bicycle. The bicycle towing device ...	01/10/2006
6561533	Bicycle towing and hitching apparatus An apparatus for hitching two bicycles together including a first hitch which connects the apparatus to one of the bicycles and a second hitch which connects the apparatus to the second bicycle. The second hitch includes a stem which is slid through and s...	05/13/2003
6290246	Quick mounting arrangement for tandem A quick-mounting arrangement for connecting a first bicycle to a second bicycle. The arrangement includes a pivot holder which is integrally formed with a rear fork of the first bicycle. The arrangement includes a quick-release mechanism which is adapted ...	09/18/2001
6155582	Bicycle coupling device A coupling device for coupling an adult bicycle to a child's bicycle. The coupling device includes a linking bar having a generally flattened "S"-shaped configuration such that the front wheel of the child's bicycle is in a spaced relationship relative to...	12/05/2000
6024368	In line tricycle The in line tricycle has a horizontal frame (34) having three wheels in line namely: a front wheel (20), an inner rear wheel (24), and an outer rear wheel (26); a chainwheel (22) and its adjuncts mounted thereunder. A modified freewheel is attached to the...	02/15/2000
5860662	Bicycle to tandem converter A coupler for coupling two standard bicycles together to form a tandem tricycle. The coupler includes a clamp for clamping the coupler to one of the tines of the seat stays of the leading bicycle and further includes a quick release clamp for releasably g...	01/19/1999
5785335	Trailer cycle A trailer cycle (10) includes a trailer cycle frame (52) having a main tube (54) which extends toward the lead cycle (12). A hitch mechanism (14) is located between the lead cycle and the trailer cycle. A lead-cycle hitch portion (34) is joined to the lea...	07/28/1998
5743543	Bicycle A bicycle includes a first bicycle body, a connecting frame and a second bicycle body. The first bicycle body includes a vertical seat post for mounting a seat, and a first joint member provided on the seat post. The connecting frame extends longitudinall...	04/28/1998
5716065	Tandem bicycle A tandem bicycle which includes a bicycle and a rear cycle unit coupled to the seat tube of the bicycle by a coupling, the rear cycle unit including a top tube, a down tube, a bottom bracket, a seat tube, a saddle and post assembly, a seat stay and bottom...	02/10/1998
5372371	Apparatus and methodology for temporarily converting single bicycles into a bicycle built for two An improved apparatus and method for converting two single rider bicycles into a tandem tricycle is provided through means of extending the rear axle of the front bicycle of the tandem by rear axle extenders. The rear axle extenders are in line with the r...	12/13/1994
5368323	Bicycle safety bar apparatus A safety bar structure arranged for retrofit relative to an associated bicycle wheel is arranged to include projecting support rails extending radially beyond the rear bicycle wheel, wherein the support rails rotatably mount a pair of support wheels to pr...	11/29/1994
5330221	Bicycle wheelie balancing device An auxiliary device attachable to a bicycle to aid in learning the stunt known as "popping wheelies" balance on the rear wheel of the bicycle, the device including a rearwardly extending support frame, a rear frame pivotally attached at one end to the sup...	07/19/1994
5209507	Transmission system for tandem bicycles A transmission system is provided for a tandem bicycle having a frame on which are mounted a front, steerable, ground engaging wheel, and a rear, driven, ground engaging wheel. The bicycle also includes front and rear pedal systems, each of which includes...	05/11/1993
5067738	Child powered bicycle trailer A single wheeled trailer for carrying an occupant is provided. The frame of the trailer is comprised of tow bar members of rectangular cross section and two non-symmetrical rear fork members which retain the single wheel. A hitch connected to a driving bi...	11/26/1991
4955628	Mini foldable cycle A mini foldable cycle having a single front wheel for steering and a pair of adjacent wheels in tandem located at the rear for propelling the vehicle. The tandem arranged rear wheels, with the front tandem wheel slightly higher than the rear tandem wheel,...	09/11/1990
4824130	Mini foldable cycle A mini foldable cycle having a single front wheel for steering and a pair of adjacent wheels in tandem located at the rear for propelling the vehicle. The tandem arranged rear wheels, with the front tandem wheel slightly higher than the rear tandem wheel,...	04/25/1989
4822068	Vehicle toy The vehicle toy includes a split central roller with end rollers on either side of it, a platform between the segments of the split central roller, side members along the ends of the rollers, and vertical members leading to handrails above the rollers to ...	04/18/1989
4688816	Multiple-wheel cycle A multiple-wheel cycle includes a front wheel and two rear wheels respectively driven by two chainwheels formed on a driving shaft rotatably mounted on a bottom bush of a seat tube of the cycle frame so that the three wheels having their centers projectiv...	08/25/1987
4458908	Tandem tricycle A tandem tricycle is easily constructed from standard bicycles by removing the front wheel and fork of the rear bicycle, placing an adapter on the frame of the rear bicycle, and mounting the adapter to the rear of the leading bicycle. The adapter allows t...	07/10/1984
4445702	Super bike An improved super bike, including a bicycle with a third wheel located between the bicycle front and rear wheels and means for the third wheel to selectively engage the ground, the third wheel carrying the foot pedals for powering the vehicle travel....	05/01/1984
4190129	Air cushion bumper cars A vehicle supported by an air cushion comprises three wheels arranged along a longitudinal axis of a chassis. The front and rear wheels can pivot through 360° and are always driven in the same direction. The center wheel has a fixed axle and is idler-mou...	02/26/1980
4154452	Bicycle safety accessory A bicycle safety accessory for preventing tipping over when the rider is executing a "wheelie" maneuver, the safety accessory utilizing a third wheel which is positioned directly behind the rear wheel of the bicycle and normally out of contact with the gr...	05/15/1979
4012054	Bicycle safety device A bicycle safety apparatus for stabilizing a bicycle when the front wheel of the bicycle is elevated above the ground which includes rollers or wheels that are mounted on the ends of rigid arms that extend outwardly and rearwardly from the back wheel of t...	03/15/1977
3997185	Bicycle frame A standard bicycle frame is modified by rigidly and permanently securing two generally parallel integral tubular members extending from the head tube of the frame past the seat support tube and then past the axis of the rear wheel and beyond the same rear...	12/14/1976
3961810	Bicycle safety and conversion wheel Wheel for bicycle is mounted upon a wheel-mounting structure which is rigidly attached to the bicycle frame. The wheel is positioned so that, when the bicycle tilts backward to a semi-stable position on its rear wheel, the bicycle safety and conversion wh...	06/08/1976

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Class 280/239 - Three tandem wheels