William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 7997400 | Transport system for the movement of passengers/goods A transport system for the movement of passengers/goods formed by a moving endless belt having: a series of pallet assemblies; drive equipment for transmitting a drive movement from actuating equipment to the pallet assemblies in a low speed section located in an em... | 08/16/2011 |
| 7946411 | Auxiliary drag mechanism at variable speed Auxiliary drag mechanism at variable speed, consisting of a variable pitch worm being geared with connection means of the components to be moved, at least during part of their path of travel, at variable speed. The worm is mounted between two end supports (8)... | 05/24/2011 |
| 7832543 | Travelator system A travelator system for conveying a passenger, comprising a main conveyor and a branch conveyor. The main conveyor includes a first plurality of shafts each having a first plurality of belt pulleys disposed side by side thereon. The main conveyor also includes a plu... | 11/16/2010 |
| 7600628 | Carriage for driving handrails of walkways and moving stairs The invention relates to a carriage for driving handrails of walkways and moving stairs, comprising a body (6) in the form of a vertical plate in which leading rollers (7) are assembled; two swinging locking pawls (12-13) for locking with... | 10/13/2009 |
| 7537102 | Transportation device with simplified tread units A transportation device with steps or pallets arranged in the form of an endless transporter. The transportation device has two or more advance guide rails which are arranged in an advance area of the transportation device, and two return guide rails which are arran... | 05/26/2009 |
| 7401691 | Conveyer apparatus having footsteps A mountainous or valley-shaped curved part 13 is provided in a part of a footstep guide rail 3 for guiding a movement of footstep rollers 5 linked by a footstep chain 7, the part being positioned in the vicinity of a drive sprocket 9 | 07/22/2008 |
| 7320393 | Conveyor An arrangement for a people mover located near a floor surface comprises a transport conveyor structure including a conveyor and a handrail having a casing. A drive machine is operatively arranged at least for moving the conveyor and the handrail. The drive machine ... | 01/22/2008 |
| 7296671 | Drive system for escalators or moving walkways A drive system for escalators having steps or moving walkways having pallets includes at least one drive motor. A drive chain is driven by the drive motor and is comprised of a plate link chain. The drive chain has such a pitch that a maximum of two links are used f... | 11/20/2007 |
| 7293642 | Methods and apparatus for transporting substrate carriers According to a first aspect, a first conveyor system is provided that is adapted to deliver substrate carriers within a semiconductor device manufacturing facility. The first conveyor system includes a ribbon that forms a closed loop along at least a portion of the ... | 11/13/2007 |
| 7290646 | Conveyor A travelator and method for transporting passengers on a travelator. The travelator includes a plurality of successive conveyors arranged to form an acceleration section, a constant speed section including at least one conveyor having a constant transport speed, and... | 11/06/2007 |
| 7255217 | Wheel for driving a flexible handrail A wheel for driving a flexible handrail of an escalator or moving walk turns about an axis of rotation, and has a tire with a tire cover that may be filled with pressurized gas and a contact surface that is intended to rest against the handrail. The contact surface ... | 08/14/2007 |
| 7255218 | Circulation type line-up conveying apparatus This apparatus automatically lines up and forwards in a single line lengthwise objects supplied at random and in many lines and yet automatically returns objects overflowed from a line-up line to upstream. This apparatus includes: a cantilever type main conveying co... | 08/14/2007 |
| 7124875 | Escalator with high speed inclined section An escalator with a high speed inclined section, includes link mechanisms, each of which has a first link with a first end rotatably connected to a step link roller shaft, and a second link, a first end of which is rotatably connected to a middle portion of the firs... | 10/24/2006 |
| 7104386 | Sloped part high-speed escalator In an escalator having a high-speed inclined portion, shape of an auxiliary track in a speed-changing region for steps is determined by finding a positional relationship between step link roller shafts of at least one of the steps and an adjacent step from a step sp... | 09/12/2006 |
| 7077257 | Drive system for reducing the polygon effect in continuous drive chains of escalators or moving walkways A drive system for an escalator or a moving walkway includes at least one drive motor, at least one drive chain and a reversing element for the drive chain. A device for modifying the speed of the drive chain is arranged in at least an entry or exit area of the reve... | 07/18/2006 |
| 7063203 | Variable speed handrail for passenger moving walkway systems A variable speed handrail for a passenger moving walkway system, comprising a flexible profile comprised of a plurality of fixed blocks each having a grooved structure and circulating along the walkway or escalator and moving with a constant speed. A plurality of ha... | 06/20/2006 |
| 7051870 | Suspension track belt Belt assemblies comprising a flexible belt having a longitudinal axis and a plurality of substantially T-shaped plates, each of the substantially T-shaped plates including a substantially horizontal portion and a substantially vertical portion, the substantially ver... | 05/30/2006 |
| 6978883 | Conveyor and method of using A conveyor for transporting articles is disclosed. The conveyor is for transporting articles having an initial pitch, wherein the initial pitch of the articles is subsequently decreased and/or increased. After the subsequent increase and/or decrease in pitch, the in... | 12/27/2005 |
| 6832678 | Escalator with high speed inclined section In an escalator with a high speed inclined section, steps are coupled in an endless manner and circulate. Driving roller shafts of the steps adjacent to each other are coupled with each other by a link mechanism. An interval between the driving roller shafts is chan... | 12/21/2004 |
| 6796416 | High-speed escalator for slope In an escalator with a high speed inclined section, shape of an auxiliary rail is set, in a section between a forward path side horizontal section and a forward path side constant inclined section of a circulation path, such that, of steps adjacent to each other, a ... | 09/28/2004 |
| 6675949 | Accelerating walkway An accelerated walkway having a moving surface made up of sets of treadboards of variable length which are mounted between lateral traction chains. A drive mechanism is related with the lateral traction chains. Each set of treadboards has a front treadboa... | 01/13/2004 |
| 6591959 | Escalator with high speed inclinded section In an escalator with a high speed inclined section, assuming that an upper-step-side end of a tread is the origin of a coordinate system when a step is seen from a side with the tread being horizontal and on an upper side, a riser passes a point whose hor... | 07/15/2003 |
| 6588573 | Escalator with high speed inclined section An escalator with a high speed inclined section in which a position of a link connection point is determined by the following equations: XM =X1 +L1 cos {ଲ-γ}, and YM =Y1 +L1 sin {ଲ-γ} (... | 07/08/2003 |
| 6454079 | Variable-speed moving walkway A variable-speed moving walkway includes an array of support rollers (10) provided with a plurality of horizontal drive rollers (11), having upper surfaces arranged to be generally flush with each other and rotated about each axial center, and an endless ... | 09/24/2002 |
| 6348025 | Moving walkway device A treadmill with at least one endless belt provided with a plurality of tread lamellae and guided around two deflection pulleys which are arranged one behind the other with parallel axes, the deflection pulleys being smooth in the area where they are in c... | 02/19/2002 |
| 6341683 | Moving walk A moving walk for effecting transport in a longitudinal direction includes a series of belt modules with modules at a center portion running at a higher rate than modules at exit ends. Among the belt modules are at least first and second belt modules, eac... | 01/29/2002 |
| 6170632 | Moving walk The invention relates to a moving walk which can transport users in opposite two directions. A number of pallets 3 are arranged for rounding or circulation on annular rails 11 having two linear sectors 1A and 1B. Screw rods 16 are arranged on the linear s... | 01/09/2001 |
| 6138816 | Variable-speed passenger conveyer and handrail device thereof A variable-speed passenger conveyer comprises: endless driving chains which disengage the pallets at an acceleration zone and high-speed zone; a screw shaft which has a pitch that changes step by step so as to accelerate or decelerate the palettes; high-s... | 10/31/2000 |
| 6065583 | Speed-variable conveyor A speed-variable conveyor includes a belt-formed fibrous body deformable in a moving direction and a width direction, a plurality of rollers mounted on both ends in the width direction of the fibrous body, and a pair of guide rails for movably supporting ... | 05/23/2000 |
| 6044955 | Accelerating travelling walkway with laterally and longitudinally displaceable step plates A travelling walkway for conveying of persons, comprises sections with different speeds and with varying speeds, is formed from pivotably interconnected and driven carriers, wherein the length distances between the carriers are variable and step elements,... | 04/04/2000 |
| 5971129 | Conveyor belt for persons A conveyor belt (1) for persons includes several sections (2, 3, 4, 5, 6) with a first section (2) and a second section (3) forming an acceleration portion (7), in which the persons to be transported are accelerated from a low initial speed, which is unpr... | 10/26/1999 |
| 5571254 | Speed variable moving sidewalk A speed variable moving sidewalk for conveying passengers includes an endless circulating path having inverting sections, a high-speed section and speed variable sections, and a large number of treadboards moving along the circulating path. Each treadboar... | 11/05/1996 |
| 5538124 | Moving walkway A moving walkway comprising at least one flat slider belt (6) entrained around rollers (8) and a termination plate (2) at the discharge end of the belt (6). The termination plate (2) may be an end plate or a transfer plate. The configuration of the termin... | 07/23/1996 |
| 5339938 | Variable-speed conveyor element, particularly for accelerated transporters The variable-speed conveyor element applied to a handrail is made up of individual handles linked together by elements of variable length which themselves function like elements of the handrail. Each of these variable-length elements is formed from a cont... | 08/23/1994 |
| 5115899 | Dual-speed escalator apparatus A dual-speed escalator apparatus comprises a main frame defining an elongated sloped circulating path, a plurality of steps disposed along the circulating path and dual link assemblies each including a first and a second link. The first and second links e... | 05/26/1992 |
| 5044485 | Moving walkway A beltway comprised of at least one beltway section which has two spaced small diameter rollers which define the ends of the section, a drive unit and a thin flexible continuous slider belt which is adapted to pass over the rollers defining the ends of th... | 09/03/1991 |
| 4953685 | Step chain for curved escalator The steps of the escalator move along a curved path which has a fixed constant radius when viewed in plan. The step chain also follows the constant radius path and thus its effective length must vary at different locations along its path of travel in orde... | 09/04/1990 |
| 4930622 | Curved escalator with fixed center constant radius path of travel An escalator is provided with a curved path of travel from its entry to its exit landings. The path of travel of the escalator steps as seen in plan is a curve having a fixed center and a constant radius from landing to landing. In elevation, each landing... | 06/05/1990 |
| 4842121 | Coupling for a continuous transport system A continuous coupling circulating along a closed path and having variable length links each comprising a bogie having at least one bobbin rotated by a wheeled railway system. Successive links are connected by flexible lines which wind on the bobbins and o... | 06/27/1989 |
| 4732257 | Continuous variable-speed transport apparatus The invention relates to continuous transport apparatus whose transport speed is variable. The embodiment illustrated is a moving walkway in which the load-bearing members are plates, adjacent plates overlapping to present a continuous surface. The load-b... | 03/22/1988 |