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...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.

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Class 280/651 - Cart


Subclass of Class 280 - Land vehicles
Definition: Wheeled vehicles comprising a simple vehicle designed to
No. of patents: 289
Last issue date: 01/24/2012


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NumberTitleIssue Date
8100430Convertible hand truck
A multi-mode hand truck is convertible to assume a hand-truck mode, a reclined load-assist mode, and a push-cart mode. ...
01/24/2012
8083253Shopping cart assembly with folding legs
A folding shopping cart assembly having a basket with a bottom surface and side walls. A plurality of rollers are coupled to the basket. A framework is provided for supporting the basket at an elevated height. The basket is capable of moving on rollers relative the ...
12/27/2011
8070181Convertible cart
The convertible cart comprises a first platform and a platform assembly. The platform assembly comprises a second platform and a third platform and is pivotably connected to the first platform. The platform assembly moves between a first position where the second pl...
12/06/2011
8011686Folding wagon
A folding wagon has a folding frame with a stowed position and an open position. The folding frame comprises a pair of front and rear vertical support. The folding frame further comprises a pair of front supplemental links and a pair of rear supplemental links. A pl...
09/06/2011
8006996Collapsible work cart
A collapsible utility cart for holding working materials, such as a five-gallon drywall mud bucket and related drywall tools, is disclosed. The utility cart is expandable from a collapsed configuration to an extended configuration. A base has a plurality of legs tha...
08/30/2011
7971898Multiple link, self-jacking work cart wa002
A multiple link, self-jacking mobile work cart includes the main body defining upper and lower portions supported by the plurality of rotating wheels. A multiple link, self-jacking mechanism is provided in connection with two laterally deployable work tables which c...
07/05/2011
7866685Golf cart collapsible device
A golf cart collapsible device includes a frame folding articulation, a linking mechanism, a four-bar linkages mechanism, a front wheel, two rear wheels and a locking mechanism. Thus, the front wheel and the rear wheels are folded and expanded simultaneously by driv...
01/11/2011
7854444Convertible utility cart
A convertible cart capable of being converted into a Bellman luggage cart, platform cart, or dolly cart. The convertible cart includes: (a) a platform having a third width, W3, (b) a first frame having a first width, W1, detachably coupled to t...
12/21/2010
7823906Mission adaptable portable cart/utility table arrangement
A mission adaptable multi-purpose, collapsible portable cart/utility table, for use in emergency response and disaster situations, camping, hunting and other outdoors activities, which carries medical rescue carts, canoes, small boats, game, or hauled cargo by hand....
11/02/2010
7806426Adjustable cart
One embodiment of the invention relates to an adjustable cart including a upper platform with a front portion and a back portion, a lower platform with a front portion and a back portion, rolling members for movably supporting the lower platform, a first supporting ...
10/05/2010
7784816Flat platform cart with collapsible casters
A flat platform cart with collapsible casters which is stable in positioning and convenient in collapsing and use. It comprises a supporting section, a push-pull section and a caster section connected thereto by a linkage means, and an extension positioning means wh...
08/31/2010
7770912Front wheel foldable device for golf cart
A front wheel foldable device for a golf cart includes a main body, a wheel frame, a positioning member, a sleeve, a stop member, and an elastic member. Thus, the wheel frame is pulled outwardly relative to the main body so that the locking portions of the positioni...
08/10/2010
7731221Collapsible and portable wheeled dolly particularly suitable for use by students or others in the transport of items
A collapsible and transportable dolly including first and second rigid base portions hingedly secured together at a central location. First and second pairs of wheels secure to underside locations associated with the base portions. First and second substantially rec...
06/08/2010
7581748Power assisted golf bag cart
A golf bag cart system (10) is provided for supporting and transporting a golf bag (12). The cart (10) is a three wheel push cart with a front disc motor (108) mounted in the front wheel (26). Recurve tubes (82, 84) support ...
09/01/2009
7575246Container wheel attachment system
A container wheel attachment system for efficiently increasing the stability and maneuverability of various containers. The container wheel attachment system generally includes a support structure including an inner portion, an outer portion and a channel, wherein t...
08/18/2009
7562897Collapsible transport cart
A collapsible transport cart includes a bottom wall with a planar top surface, and a plurality of apertures formed in opposed corners thereof. First and second axially opposed walls are attached to the bottom wall, and third and fourth walls are attached to opposed ...
07/21/2009
7547037Pull cart
A pull cart comprising a frame (H, 12, 13, 14), a flexible carrier structure (20) connected to the frame, and a suspension (30, 31) connected to the frame. The frame comprises a first (11) and a second (12) substantially U-shaped f...
06/16/2009
7458601Collapsible cart for paint spray pump
A collapsible cart for paint sprayers including a pair of spaced apart legs, a pump support extending between the upper ends of the legs, a pair of feet, a handle extending above the pump support, and lock and release means connected to the handle, pump support and ...
12/02/2008
7458600Cart and bag carrier
A carrier mounted on a cart for transporting a bag or a sack containing loose or granular materials. The carrier is comprised of a pair of jaws having gripping surfaces for retaining an upper portion of a bag or sack and a handle for carrying the bag or sack in a sl...
12/02/2008
7427080Shopping trolleys
A shopping trolley, which includes a holder for holding articles of shopping, and a wheeled undercarriage connected to the holder. The undercarriage is operable between an erected condition, in which the undercarriage supports the holder at a working height above th...
09/23/2008
7427075Steering device for pallet truck
A steering device for decreasing a turning radius of a pallet jack includes a ground engaging member connected to a support member of the pallet jack between a main wheel and an extensible wheel. The load supporting member of the pallet jack is positionable between ...
09/23/2008
7422221Transport cart system and method of its manufacture and operation
A system of transport carts are positioned in side by side relation in fore and aft extending spaced apart rows disposed along a delivery van to leave an aisle between them. The carts have wheel supported upright frames with bottom supports for the products disposed...
09/09/2008
7419170Adjustable monitor cart
Size altering transportation monitor cart whose horizontal width can be expanded or retracted by pulling stopper pins and pulling or pushing the horizontal frame open, closed or to a varying degree between opened or closed. ...
09/02/2008
7398977Shopping cart liner
A shopping cart liner is disclosed. An illustrative embodiment of the shopping cart liner includes a flexible, plastic liner body having a bottom panel and a rear portion, a pair of side portions and a front portion extending from the bottom panel. In some embodimen...
07/15/2008
7398978Foldable trolly
The present invention provides a foldable, four-wheel trolley of simple, lightweight construction for use in connection with the transport and storage of items of the type typically used in connection with the operation of beauty salons or similar uses. Moreover, th...
07/15/2008
7395902Hand deactivated shopping cart automatic braking system
A braking system designed to be an integral part of a shopping cart. The braking system consists of a hand-operated brake that is gravity actuated and normally engaged. The user disengages the braking system to move the shopping cart, preferably by pushing a primary...
07/08/2008
7389996Dolly for moving a bendable roll of material, such as a carpet
A dolly for moving a bendable roll of material such as a carpet and bending it to fit into a confined space, such as an elevator, includes a primary section capable of supporting a first portion of the roll and having ground-engaging wheels, and a: secondary section...
06/24/2008
7384050Cart for portable oxygen
An oxygen cart comprises a post connected to a handle and a bracket, a plurality of wheels connected to an underside of the bracket, at least one tank holder connected to an upper side of the bracket for holding portable gas tanks, and a tank support wall connected ...
06/10/2008
7377538Shopping buddy
A portable folding shopping cart and utility carrier has a folding frame and a flexible basket and bottom shelf which can be folded to a compact size and shape for storage when not in us and can be readily unfolded for use. Wheels permit the cart to be easily transp...
05/27/2008
7354058Folding structure of carrier
A folding structure of a carrier includes an expansion member connected between a base frame and an extension member. As the expansion member pivotally passes through the point of over-tangency (the turning point of balance of force), the extension member is extende...
04/08/2008
7350791Propping structure of a golf trolley
A golf trolley includes a frame, and two propping members; the frame includes two tube parts; each of the propping members includes a sleeve portion, a connecting portion, a prop pad, and a stopping element; the sleeve portion is positioned around a corresponding on...
04/01/2008
7347443Wheeled golf bag arrangement
A golf club bag assembly is shown for carrying a plurality of golf clubs therein. The bag assembly comprises an elongated spine having upper end and a lower end, an upper frame member attached to the upper end of the spine at a first acute angle with respect thereto...
03/25/2008
7341006Folding table assembly
A folding table assembly having an open configuration and a closed configuration. Spring loaded hinges provide the folding table assembly with an automated approach to unfolding the table assembly. Casters provide the table assembly with structure making the assembl...
03/11/2008
7338055Method and workstation for single patient medical care
A reconfigurable medical workstation enables efficient arrangement of medical equipment used to provide care to a specific patient. The workstation contains a comportment space that can be divided into compartments as needed to house the medical equipment. The compa...
03/04/2008
7334592Rolling cane
A cane having a base having at least one wheel, a substantially vertical member connected to the base, a brake within the vertical member, the brake including at least one actuator and a brake pad and a hand grip proximate the actuator wherein the brake is engageabl...
02/26/2008
7328905Tool organizer
A tool organizer is disclosed. According to one embodiment, the tool organizer comprises a frame and a plurality of wheels attached to the frame. The frame includes an upper frame component and a lower frame component. The upper and lower frame components are connec...
02/12/2008
7322905Exercise machine with variable resistance unit and braking unit
An exercise machine is disclosed. Exemplary embodiments include an exercise machine with a safety brake mechanism to provide a braking force to the exercise machine to stop the exercise machine, an exercise machine with a variable resistance mechanism to variably ad...
01/29/2008
7293792Transportable child booster seat/carrying bag
A transportable booster seat and optional carrying bag are provided. The booster seat has a seat cushion, optional arms on respective sides of the seat cushion, wheels beneath the booster seat in the rear area of the booster seat, and a retractable handle in or adja...
11/13/2007
7287777Collapsible hand-operated hauling device
A collapsible hand-operated hauling device is structured of sturdy, yet lightweight material for hauling matter, and is structured to be collapsed or folded into a smaller size so that the hauling device can be lifted and stored, on a wall for example, or placed in ...
10/30/2007
7284946Mobile skid turner
A mobile skid turner for inverting skid loads of paper includes an H-shaped base frame portion with casters for facilitating movement in desired directions and opposing upright structural members at an intermediate location. A rotatable shaft facilitates the rotatio...
10/23/2007
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