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...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 8151937 | Levitator—ergonomic worker support system An ergonomic worker support stand with convenience features for reducing stress and supporting either the upper or lower portion of a person's body is disclosed. The stand is designed for safety, convenience and comfort in performing worker tasks. My patent includes... | 04/10/2012 |
| 7984789 | Observation stand An observation stand. In one non-limiting embodiment the observation stand includes a support base, a seat, a platform, and a safety-framework. The support base defines opposite top and bottom ends and first, second and third legs configured in a tripod arrangement.... | 07/26/2011 |
| 7617910 | Sanitary platform utilizing a web bracket This patent pertains to a platform device upon which a person, equipment or both are supported above a ground surface in which the build-up of debris and moisture is impeded. The sanitary platform system is comprised of two or more main rails having square cross-sec... | 11/17/2009 |
| 7364181 | Self locking coupling device A coupling device that requires no manual actuation to achieve coupling features a locking bolt movable along a hole extending into a mouth of a hook body to secure a coupling pin therein. A control lever pivotally connected to the locking bolt opposite the mouth en... | 04/29/2008 |
| 7328772 | Ladder support apparatus and methods Ladder support apparatus and methods are disclosed. In one embodiment, a method includes positioning a ladder having first and second pairs of legs in an operating position suitable for supporting a user. A ladder support assembly clampably coupled to the ladder, th... | 02/12/2008 |
| 7322153 | Baby gate A gate assembly for selectively opening and closing a passageway includes opposed sides defined by a pair of newel posts. The gate assembly includes a gate, first and second mounting assemblies and a pair of hinges. Each mounting assembly includes a mount face plate... | 01/29/2008 |
| 7320382 | Deer stand A deer stand is pivotally mountable on a back rack of an ATV. When erected to an upright position the deer stand is stabilized by the mass of the ATV, preventing collapse of the stand due to wind or other such forces. When being transported to the location, the stan... | 01/22/2008 |
| 7310915 | Retractable column and method of forming The present invention is an improved apparatus and method for forming a retractable tower or column. The present invention includes pointed hooks wherein the hooks are attached to each section of a section chain, one in a horizontal direction and one in an off-set m... | 12/25/2007 |
| 7273115 | Control apparatus for a patient support A patient support including a traction device and a motor for moving the patient support. A motor disconnect arrangement is provided to enable manually powered movement of the patient support. ... | 09/25/2007 |
| 7266933 | Sheet material handling device A sheet material handling device for assisting a drywall installer in installing sheet material, such as drywall or gypsum board, in an overhead location such as a ceiling of a structure. The device includes base and a pivoting sheet support that is adjustable in se... | 09/11/2007 |
| 7246683 | Tree stand with back support A tree stand for hunting includes a frame constructed to stably engage a tree trunk in an elevated position, a seat pivoted to the frame, and a back support pivotally supported by a link mechanism to a telescoping upright of the frame above the seat. Vertical and an... | 07/24/2007 |
| 7234282 | Modular tower A modular tower assembly for use with blown film extrusion processes, where modular tower sections each having identical columns/foot prints can be stacked on top of one another. Each module can have rectangular type platforms with walk decks about a central rectang... | 06/26/2007 |
| 7222466 | Foldable support structure with hinged sawtooth wall members A foldable truss member suitable for commercial displays includes a plurality of side members that are adjacently hinged together. The side members include support members and bridging members having extensions. The side members are joined into a foldable structure ... | 05/29/2007 |
| 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 |
| 7210558 | Scaffold having detachable ladder assembly A scaffold having a ladder assembly detachably connected to one end of a support frame of the scaffold, the ladder assembly being pivotally connected to one of the ends of the support frame, the ladder assembly being selectively rotatably moved between a first posit... | 05/01/2007 |
| 7174995 | Collapsible tree stand A collapsible tree stand and tree stand mounting apparatus is claimed. The tree stand consists of a bottom platform and a seat mounted to a vertical support. A coupling member attached to the vertical support is mountable onto a separate tree stand mounting apparatu... | 02/13/2007 |
| 7168580 | Rack A first section of a rack includes a first lower wire bend, a second lower wire bend, a first upper wire bend, and a second upper wire bend. The first section also includes a first pivot coupling into which is received a first end of each of the first and second low... | 01/30/2007 |
| 7162760 | Methods and apparatus for a step mounting system A step mounting apparatus includes a stepping portion, at least one mounting support extending from the stepping portion, and at least one contact member attached to the at least one mounting support. The at least one contact member is adjustable with respect to the... | 01/16/2007 |
| 7143865 | Fishing chair having a sand stabilizer A fishing chair having a sand stabilizer is disclosed. The fishing chair includes a front frame, a back frame, a chair frame and a stabilization frame. The chair frame is pivotally connected to at least one of the front and back frames. The stabilization frame is pi... | 12/05/2006 |
| 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 |
| 7140808 | Catwalk device and method A catwalk is provided for use in trenching operations that provides increased safety and improves efficiency. Methods are also provided that save time over the prior process of building multiple land bridges. Selected features include reduction in the number of ladd... | 11/28/2006 |
| 7121381 | Move-on ladder system A system and method for providing an improved ladder for enabling a user to climb up or down and forward or backwards movement relative to a surface. The system enables increased mobility and stability. The system can be designed in multiple ways which some of them ... | 10/17/2006 |
| 7118149 | Cylinder carrying and chocking apparatus and method A carrier for a scuba tank or other cylindrical bottle comprises two cylindrical handles connected by a looped rope, the rope passing slidably through one of the handles. The scuba tank is supported by the ropes and carried by one handle looped through the rope. The... | 10/10/2006 |
| 7104361 | Ladder A platform ladder comprising two elongate ladder sections having feet at one end and an upper end, the upper end of each section being hinged to an upper rail, a platform pivotally secured to one ladder section below the upper end and adapted to interconnect with th... | 09/12/2006 |
| 7077239 | Expandable dual tube scaffold hatch structure The invention is a scaffold access system for use in a scaffold frame of horizontal and vertical scaffold members. The system includes double barrel scaffold horizontal member, a series of short scaffold boards, a series of long scaffold boards, a short vertical sca... | 07/18/2006 |
| 7051839 | Camouflage device for equipment legs A device for providing three dimensional camouflage to a hunter's ladder stand having a seat, footrest, side rails and a plurality of rungs. The device has a hollow plastic tube with a split and holes through which a plurality of stalks of artificial vegetation are ... | 05/30/2006 |
| 7048091 | Portable lifeguard chair A portable chair is disclosed having a seat, a frame that supports the seat, a ladder that provides access to the seat; and a hollow tank that holds a liquid mass, connected to the frame. The frame includes first and second side supports each having a forward suppor... | 05/23/2006 |
| 7021423 | Ladder stand with adjustable implement rest and pivotally movable flip-up seat A portable ladder stand for outdoor use, which provides a hunter or naturalist with an elevated vantage point for viewing or harvesting game. The stand includes a pivotally attached seat to permit the hunter or naturalist to change from a seated position to a standi... | 04/04/2006 |
| 6994186 | Helicopter lineman's ladder A rigid, unitary ladder is provided having one end configured to be attached to a powerline support tower after the ladder is dropped by helicopter to a lineman previously offloaded onto the tower. The ladder includes a first section which extends outwardly from the... | 02/07/2006 |
| 6957718 | Apparatus to assist a mechanic to work on a vehicle A device (10) which assists a person (P) in working on the engine (E) of a vehicle (V) includes a base member (11) which rests on the ground and has a socket (17) extending upwardly therefrom. A post assembly (23) includes a stem portion ... | 10/25/2005 |
| 6953106 | Collapsible scaffolding tower A collapsible scaffolding tower having four uprights arranged in two pairs, wherein each of the uprights is formed of three or more telescopically collapsible sections and rigid horizontal bars extend between the sections of the uprights in each pair to form two tel... | 10/11/2005 |
| 6926468 | Portable flotation platform for shallow bodies of water A portable flotation platform is disclosed for use in supporting a load of equipment, hunting dogs, or personnel above the level of a body of water. The platform includes a deck constructed to be of an overall density less than that of water and sized so as to suppo... | 08/09/2005 |
| 6902033 | Portable folding observation tower for attachment to a vehicle A tower system adapted to be secured non-permanently to different sized cargo portions of a moving vehicle is disclosed. The system comprises (i) a tower structure including means to allow a user to sit on the tower; and (ii) a support member to which the tower stru... | 06/07/2005 |
| 6810995 | Portable stairs with adjustable landing platform height An adjustable stair and platform system. The apparatus includes a set of stairs which is affixable to a platform at a first height or alternately at a second height. Both the platform unit and the stair unit include vertically adjustable legs above ground engaging f... | 11/02/2004 |
| 6772860 | Helicopter access platform A mobile worker platform providing access to the rotor area of a helicopter having outriggers spaced to straddle the helicopter landing gear. ... | 08/10/2004 |
| 6769513 | Swimming pool ladder A molded plastic pool ladder of A-frame shape having first and second sides consisting of assembled frame channel rail structures with a ladder slidable between lower and higher positions in one of the frame channel rail structures and movable feet on the bottom of ... | 08/03/2004 |
| 6763912 | Modular stair assembly A modular stair assembly includes a stair module and at least one of a transportation module, deck module, handrail module, extension deck module, and extension handrail module that can be interconnected in various configurations to suite a wide variety of different... | 07/20/2004 |
| 6725970 | Stability alignment frame for erecting a portable multi-purpose stand A stability alignment frame useful for the erection of a observation or hunting stand includes a plurality of vertical posts. A horizontal framework interconnects adjacent posts and a leg is secured to an associated vertical post. Each leg extends downwardly and out... | 04/27/2004 |
| 6676358 | Compact folding aircraft passenger ramp A mobile passenger ramp for loading and unloading aircraft, the ramp comprising having upper and lower frame sections connected pivotally so that the ramp can be folded for storage or movement about the tarmac and unfolded at an obtuse angle to form a wid... | 01/13/2004 |
| 6637549 | Mobile observation platform assembly A mobile observation stand assembly includes a platform that may be in a lowered position for transport and an elevated position for use in a desired location. The assembly includes a base supported by a wheel and axle assembly, with an articulated anteri... | 10/28/2003 |
