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| Number | Title | Issue Date |
| 7357241 | Device for restraining the rise of a step roller of a people conveyor People conveyor (2) including an endless conveyor band (4) extending through an inclined portion (6), a first and a second turnaround portions (8) and a return portion (5) of an endless path and comprising a plurality of steps (... | 04/15/2008 |
| 7222713 | Step attachment on the step chain of an escalator The invention pertains to an escalator (2) with an endless stair band (6) that is composed of several interconnected steps (4), wherein a step (4) contains a walking surface (16) and a front side (18) and is connected to res... | 05/29/2007 |
| 7185741 | System with moving zero step for stairs The present invention discloses an electromechanical traversing step system for transporting elderly users 12, infirm and others between floors of a building. A single moveable step 14 ascends or descends on a set of tracks 16 secured to the wal... | 03/06/2007 |
| 7159705 | Passenger conveyor device A plurality of steps 33 are connected to a pair of step chains 32 wound around step chain sprockets 30. The step chain sprockets 30 drives the step chains 32 to turn the step chains 32 through a forward path 43a | 01/09/2007 |
| 7070038 | Escalator chain drive mechanism An escalator having a twin chain drive. Each chain 10, 11 comprises links 13 consisting of two side plates 14 interconnected by hollow sleeves 15, 23. The links are pivotally connected together to form a chain by linking plates 18 ... | 07/04/2006 |
| 7051390 | Multi-purpose tool A multipurpose tool is designed to meet the particular needs of commercial truck drivers. Preferably, it has a unitary, single-piece head which includes a chopping tool, a hammering tool, and a prying-pivoting tool, and a nail and/or staple removal assembly. Prefera... | 05/30/2006 |
| 7032740 | Device for sensing the wear state of wheels or rollers The invention relates to a device and a method for automatically sensing the wear state of movable wheels or rollers (1) in conveying systems, for example baggage conveying systems. It achieves the object of easily and reliably sensing the wear state in an au... | 04/25/2006 |
| 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 |
| 6945379 | Chain segment for personnel conveyor Personnel conveyor (2) featuring endless personnel conveyor belt (6) formed of numerous step elements (4), in which step elements (4) are attached to conveyor chains (8) along both of their sides that are driven around a first and ... | 09/20/2005 |
| 6899216 | Escalator for negotiating curves An escalator has steps shaped (1) to negotiate curves. The steps are suitably linked (4)(5)(6), guided (3)(10)(11), contained and powered so that the escalator can rise, fall, follow a horizontal path, be straight or ... | 05/31/2005 |
| 6812308 | Initiator systems and adhesive compositions made therewith Initiator systems of the present invention include both a complexed initiator and a carboxylic acid decomplexer. For example, dicarboxylic acid decomplexer, carboxylic acid ester decomplexers, and monocarboxylic acid decomplexers (preferably those comprising an alky... | 11/02/2004 |
| 6349813 | Escalator roller degradation monitor device A roller degradation monitor device monitors the diameter of escalator rollers during operation of the escalator. A cam plate is mounted proximate the roller track for sequential contact with the upper circumference of rollers as they travel along the tra... | 02/26/2002 |
| 5775477 | Drive system for curved escalator A drive system for a curved escalator which has a frame, a transport section including steps, return tracks and guide tracks, and a drive connected to the transport section. The drive system includes: chain wheels connectable to the drive; and chains enga... | 07/07/1998 |
| 5544729 | Curved escalator A curved escalator in which the occurrence of an unacceptably wide gap between the steps or between the steps and the sidewalls is avoided by virtue of the fact that all the step sections have different arcs when viewed in the plan view but have constant ... | 08/13/1996 |
| 5415265 | Drive mechanism for an endless track conveyor apparatus An endless track conveyor apparatus having steps (1, 2) is driven by a drive chain (6) circulating along an endless travelling track (A, B-M, N, A) made up of an ascending section, a descending section, and U-turn sections connecting these ascending and d... | 05/16/1995 |
| 5213191 | Vertically movable staircase A vertically movable staircase carries on a vertical pillar a plurality of steps sequentially secured to the pillar along a spiral line thereon, the pillar being vertically moved while being axially rotated by a driving device. The staircase is space savi... | 05/25/1993 |
| 5184710 | Escalator apparatus An escalator includes a main frame defining an elongated sloped circulating loop path having an upper load-bearing run and a lower return run and a plurality of steps disposed along the circulating loop path defined by a guide rail mounted to the main fra... | 02/09/1993 |
| 5170875 | Conveyor machine A conveyer machine which has a forward conveyer part and a backward conveyer part continuous therewith, and which is simple in construction, small in size, and light in weight, and which can be applied to various fields. A reciprocal escalator serving as ... | 12/15/1992 |
| 5165513 | Circulating circular escalator A circulating circular escalator has a vertically-oriented rotatable cylinder extending between upper and lower floors. An annular stairway having a plurality of steps is disposed about the rotatable cylinder. An annular cam member is disposed around the ... | 11/24/1992 |
| 5158167 | Spiral escalator A spiral escalator includes a plurality of stairs which are moved along a closed path of travel with the stairs collectively defining generally upwardly and downwardly moving spiral staircases bridged by upper and lower generally horizontally moving stair... | 10/27/1992 |
| 5148906 | Curved escalator A circular escalator which compensates the different angle velocities of the inner and outer step edges in the transition and landing zones of the escalator to maintain the axis (29) of each step (21) exactly radial to the path of travel (1) so that dange... | 09/22/1992 |
| 5094335 | Step chain roller for curved escalator In a curved escalator which has a return step run which is below the passenger-bearing run, the reversal step chain sprockets are of different diameters, the outer step chain sprockets being larger than the inner step chain sprockets. Since the steps are ... | 03/10/1992 |
| 5052539 | Circular escalator A single endless series of steps for up and down flights has inboard end spacing control links, each operated by a gear arrangement at transitions between curved and straight paths of step travel. Steps are molded plastic cores with top mounted tread caps... | 10/01/1991 |
| 5050721 | Step riser profile for curved escalator An escalator which follows a curvilinear path with a fixed center constant radius in plan must have steps with specially configured risers. The step risers will have vertical cleats which mesh with trailing edges of adjacent steps, which meshing must be p... | 09/24/1991 |
| 5033606 | Conveyor having pivotally connected step units There is disclosed a conveyor for transporting passengers. The conveyor comprises numerous step units which are interconnected. The step units move along guide passages. Each step unit consists of a front portion and a rear portion. These two portions are... | 07/23/1991 |
| 5020654 | Curved escalator step chain turnaround zone The curved escalator has inner and outer step chains that are entrained on inner and outer sprockets which have different diameters, the outer sprocket having a larger diameter than the inner sprocket. The steps of the escalator reverse their direction of... | 06/04/1991 |
| 5009302 | 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... | 04/23/1991 |
| 4984671 | Balustrade radius development for curved escalator The balustrade of a linear or curved escalator has upper and lower edges that are curved in elevation between the horizontal landing portions and the constant slope inclined medial portion of the escalator. The radius which defines the upper and lower bal... | 01/15/1991 |
| 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 |
| 4949832 | Curved escalator with vertical planar step risers and constant horizontal velocity The escalator has steps with vertical planar cleated risers which mesh with cleated trailing edges of the adjacent step. The step chains are selectively kinked and unkinked to provide for a constant spacing of adjacent step axles throughout the path of tr... | 08/21/1990 |
| 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 |
| 4895239 | 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... | 01/23/1990 |
| 4889222 | Balustrade structure for curved escalator A balustrade structure for a curved escalator wherein at least one of an inner deck board and an outer deck board constituting a balustrade base portion of the escalator is constructed with a plurality of curved strips of a thin sheet which is straight in... | 12/26/1989 |
| 4884673 | 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... | 12/05/1989 |
| 4883160 | 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... | 11/28/1989 |
| 4809840 | Curved escalator A curved escalator comprises a plurality of segment steps movable along the stairway path, an inner balustrade panel of balustrades vertically disposed along an outer and an inner side of the stairway path, a moving handrail supported by a handrail guide ... | 03/07/1989 |
| 4775043 | Step for a curved escalator A segment step is provided for a curved escalator having a plurality of segment steps connected to an endless loop of step chains having curved cleats so related in curvature that the steps circulating along the endless loop mesh properly and smoothly. Ea... | 10/04/1988 |
| 4746000 | Curved escalator A curved escalator includes guide tracks for defining a stairway path which includes a constant slope intermediate section, horizontal landing sections, and transient sections smoothly connecting the intermediate section and the landing sections. Each sec... | 05/24/1988 |
| 4739870 | Moving staircase with a curved conveyor passage A moving staircase having an arcuate conveyor passage in plan view is disclosed in which the tread boards articulated in an endless fashion along the arcuate conveyor passage are each rotatably provided with a tread board axle in the widthwise direction, ... | 04/26/1988 |
| 4730717 | Curved escalator A curved escalator comprising a plurality of segment steps having step axles connected to an inner and an outer endless loop of step chains so that the steps circulate along the endless loops, and inner and outer sprocket wheels having different diameters... | 03/15/1988 |
