Did You Know...
...that Robert Adler has the dubious distinction of being the Father of the Couch Potato? Back in 1955 Adler was employed by what was then Zenith Radio Corp., where he was charged to invent something that would allow viewers to turn down the TV volume without leaving their chairs. After a series of flops (such as a wired contraption that people tripped over), Adler hit on the idea of using sound waves. Thus the Remote Control was born...
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| Number | Title | Issue Date |
| 7383600 | Convertible dock ramp A convertible dock ramp has an upper end pivotally mounted to a mounting structure, and a lower end resting on a second structure. The dock ramp includes a pair of spaced-apart side frames each including upper and lower rails; and a plurality of steps each including... | 06/10/2008 |
| 7337583 | Extendable deck for seating system An extendable deck assembly for a seating area includes a deck portion that is extendable from a base portion to provide a substantially planar support platform. The extendable deck assembly includes a support assembly positioned within the base portion and configur... | 03/04/2008 |
| 7309399 | System and method for manufacturing filling strips configured for use with a corrugated member A method of manufacturing filling strips for placement between a surface and a corrugated member wherein the corrugation defines a profile. The method includes: providing a sheet of material having a longitudinal axis and first and second major surfaces; forming at ... | 12/18/2007 |
| 7267200 | Elevator with compact rope suspension An elevator with an elevator car, guide rails, a counterweight and counterweight guide rails is arranged to minimize shaft space requirements. This elevator has a plurality of diverting pulleys mounted in an upper part of the shaft. A drive motor with a traction she... | 09/11/2007 |
| 7225901 | Elevator roping system An elevator, preferably an elevator without machine room, in which the hoisting machine (10) engages the hoisting ropes (3) by means of a traction sheave (11), the elevator car (1) being at least partially supported by the hoisting ropes ... | 06/05/2007 |
| 7216741 | Safety cage for gangway A safety cage improves the safety of workers servicing tanker vehicles having top side hatches. A part or parts of the cage can be repositioned to permit the hatch cover to be opened and then can be returned to a safety enchancing position. ... | 05/15/2007 |
| 7159261 | Convertible dock ramp A convertible dock ramp has an upper end for being pivotally mounted to a mounting structure, and a lower end for resting on a second structure. The convertible dock ramp includes a pair of spaced-apart side frames each including upper and lower rails; and a plurali... | 01/09/2007 |
| 7140467 | Bulk material transport vehicle access structure A bulk material transport vehicle access structure includes an elongated service platform for workers which is pivotally supported at its opposite ends to cantilever arms on parallel horizontal axes to avoid binding between the roller carriages of the cantilever arm... | 11/28/2006 |
| 7121226 | Movable platform unit for a boat particularly for hauling and launching tenders and the like A movable platform unit (1) for a boat (B), in particular for launching or hauling out a tender or the like, includes a base portion (2) secured to the boat (B) and at least one swing arm (32a, 32b), pivoted at one end onto ... | 10/17/2006 |
| 7069611 | Regional boarding ramp for commuter aircraft A walkway having a series of fixed height corridor units and an inclined gangway unit at its forward end. The units are articulatingly connected and selectively collapsible. The gangway is selectively variable in height, being provided with elevating means at its fr... | 07/04/2006 |
| 7070194 | Memory function for powered running boards A control mechanism for a powered running board on an automotive vehicle, such as a sport utility vehicle, utilizes the memory function of the vehicle to store therein established operating positions for the running board. The user or occupant of the vehicle can man... | 07/04/2006 |
| 7047698 | Exterior step system made from masonry units attached via a metal frame A step system made up of masonry panels of various sizes pre-formed to resemble natural stone or brick on the outside. These panels have bolts or other securing devices embedded in them at precise locations at the time of their manufacture. These securing devises al... | 05/23/2006 |
| 7025365 | Elevatable and extendable platform A stowable platform for use with a vehicle movable from the stowed to the extended position in a single plane. Once extended, the platform support is locked, preventing further movement, and the platform itself is capable of further extension or elevation. ... | 04/11/2006 |
| 7017709 | Marine safety ladder apparatus A buoyant marine safety ladder apparatus includes a ladder that is pivotably mounted to a seawall or other support platform and is alternatable between a retracted condition, wherein the ladder is floating above the water, and a deployed or extended condition, where... | 03/28/2006 |
| 6929217 | Interstitial regional aircraft boarding piers, and methods of using same An interstitial regional aircraft boarding pier can be provided at an airport concourse in place of a conventional large aircraft boarding bridge. The interstitial regional aircraft boarding pier includes a primary passenger bridge between the airport concourse and ... | 08/16/2005 |
| 6923140 | Boat access stairway A boat access stairway having a landing attachable to a pier, a ramp which can be raised, lowered and slewed and a platform at the free end of the ramp whose orientation relative to a boat positioned parallel to the pier remains the same regardless of the slewed con... | 08/02/2005 |
| 6814522 | Pivot assembly A pivot assembly particularly adapted for pivotally interconnecting a pair of relatively thin parallel walls spaced an appreciable distance from one another. A stud with a pivot joint on one end is interposed between the walls. ... | 11/09/2004 |
| 6802391 | Aircraft non-ambulatory/ambulatory boarding and off-loading system The invention is a loading system, which is a combination adjustable height stairway and a landing platform at one end that can be elevated to the level of the aircraft loading door and a lifting portion for loading articles to and from the landing platform. Both th... | 10/12/2004 |
| 6527081 | Embankment stairway A portable embankment stairway with steps that can be adjusted for the slope of the section of the embankment on which it is temporarily installed to provide level footing for workmen on the stairway.... | 03/04/2003 |
| 6390152 | Modular bulk material handling station A bulk unloading station is formed by two elongated modules stacked one on top of the other. Each module has a frame with pillars and when the upper module is stacked on the lower module the pillars on the upper module align with the pillars on the lower ... | 05/21/2002 |
| 6354403 | Adjustable stair stringer and railing An adjustable stair stringer and railing construction assembly is disclosed. The assembly is adapted to use a pair of parallel stringer arms for each side of the stair, a riser/tred support bracket for each stair, and alignment and spacing elements for sp... | 03/12/2002 |
| 5950267 | Portable gangway with leveling stairs A gangway to accommodate passage to and from a boarding structure includes first and second longitudinal frame members each having an elongate housing with a wall structure surrounding an interior thereof and a pair of longitudinal elongate rails extendin... | 09/14/1999 |
| 5794292 | Portable gangway with leveling stairs A gangway to accommodate passage from one floor, platform level, deck surface, or the like to another includes a rigid support structure defining a main frame assembly having a pair of longitudinal frame members extending in spaced, parallel relation to o... | 08/18/1998 |
| 5657832 | Stairway for connecting a floating member to a stationary member A stairway connects a stationary member, such as a fixed dock, to a member, such as a floating dock or a floating vessel, which moves vertically with respect to the stationary member. The stairway moves with the moving member and includes stringer members... | 08/19/1997 |
| 5392878 | Bulk material load vehicle access system An upstanding support structure is provided defining an elevated horizontally elongated stationery platform extending along one side of the support structure and a horizontally elongated second platform is mounted, in cantilever fashion, from the one side... | 02/28/1995 |
| 5189854 | Adjustable height stairway The invention is an adjustable height stairway having two parallel elongate ower frame members and two parallel elongate upper frame members swingable on a base. The upper frame members have wave-like edges that can fit with complimentary wave-like edges o... | 03/02/1993 |
| 5042612 | Bulk material load vehicle access system An upstanding support structure is provided defining an elevated horizontally elongated stationary platform extending along one side of the support structure and a horizontally elongated second platform is mounted, in cantilever fashion, from the one side... | 08/27/1991 |
| 4971168 | Boat side-ladder The side ladder has upper and lower footpaces (1, 3) connected with side elements (5) on which a flight of steps (7) is hinged. A first actuator (11) is provided for withdrawing the ladder from a housing (15) on the boat and a second actuator (13) is prov... | 11/20/1990 |
| 4768617 | Adjustable stairway having retractable wheel carriage An adjustable stairway is disclosed that is supported on a retractable, wheel mounted carriage. A locking mechanism selectively maintains the carriage in a lowered, ground engaging position for easy maneuvering of the stairway. The weight of the stairway ... | 09/06/1988 |
| 4679657 | Mobile tank vehicle access system An elevated platform is provided including one longitudinal marginal portion alongside which an elongated tank body of a vehicle may be disposed. The marginal portion of the platform pivotally mounts a pair of extension panels therefrom in slightly spaced... | 07/14/1987 |
| 4615160 | Adjustable staircase Adjustable staircase having a pair of stringers each provided with a pair of pantographs, disposed one above the other, identical in overall length and having diagonal levers also of equal length, which levers are pivoted at their center and end points. T... | 10/07/1986 |
| 4572328 | Safety platform This invention relates to a platform and more particularly to a vertically adjustable safety platform assembly for obtaining safety railing enclosed access to the tops of mobile equipment of various heights such as tank trucks and railroad tank and hopper... | 02/25/1986 |
| 4462314 | Rocker arm assembly for an aerial tramway A rocker arm assembly for support of the haul rope of an aerial tramway or the like is disclosed. The assembly includes rocker arms, rope supporting sheaves rotatably mounted to the rocker arms and cantilevered from an inwardly facing side of the rocker a... | 07/31/1984 |
| 4421206 | Ladder In a stepladder, with two legs which are connected with each other swingably around an axis in the region of an upper end of the legs, at least one of the legs has transverse support members which are supported by a first pair of stiles, and arranged spac... | 12/20/1983 |
| 4406347 | Modular staircase assembly A modular staircase assembly having a plurality of individual interconnecting upper and lower stringer members including a means for coupling upper and lower stringer members and a means for interconnecting in longitudinal alignment adjacent stringer memb... | 09/27/1983 |
| 4262771 | Safety device for crossing railroads An hydraulically operated bucket for lifting persons over railroad cars.... | 04/21/1981 |
| 4249634 | Safety floating step assembly for platform Safety floating step assembly for pivotal connection to platforms and the like, being self-leveling through a single pair of parallel four-bar linkages and adjustably movable to the same and different horizontal levels of position relative to the platform... | 02/10/1981 |
| 4168764 | Level step stair walkway Self adjusting stair walkway with double side handrailing keyed and hinged to opposed side bar hinge linkage configurations that have steps hinge supported in a manner that upon the main side bars being swung in an arc about its support hinge the steps re... | 09/25/1979 |
| 4157742 | Accommodation ladder arrangements Accommodation ladder having a first flight of steps of adjustable length with one end adapted for connection to a ship while its opposite end is pivotably mounted about a horizontal axis at a given level above the quayside. This flight of steps is also mo... | 06/12/1979 |
| 4100995 | Telescopic set of steps with variable slope A telescopic set of steps comprises at least two frames, each of which consists of two parallel members forming stringboards, one end of one of the frames being pivoted to a fixed support for pivotal movement about a horizontal axis, and the other frame b... | 07/18/1978 |
