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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 |
| 7287878 | LED sign cover and method of manufacture A cover for a LED sign is manufactured from a stainless steel sheet that is dimensionally larger than the array of light emitting diodes comprising the LED sign. The stainless steel sheet is laser cut and then bent to simultaneously form a plurality of apertures and... | 10/30/2007 |
| 7266928 | Golf ball deflecting window cover A golf ball deflecting window cover includes a window frame and a window that is mounted therein. A panel of transparent plastic material has a first side, a second side, a top edge, a bottom edge, a first side edge and a second side edge. At least one hinge member ... | 09/11/2007 |
| 7266963 | Switching device for refrigerator A switching device for an integrated product, such as a display, installed on a front surface of a door of a refrigerator is provided. The switching device includes a hinge assembly which rotatably couples the door to the refrigerator. The hinge assembly includes a ... | 09/11/2007 |
| 7246562 | Structure of delivery door having anti-theft security means The present invention relates to a delivery door having anti-theft security means, more particularly to a door structure consists of a pair of casings, area adjustable mounting plate, hinge means and actuation means, which are installed on an entrance door or a wind... | 07/24/2007 |
| 7216459 | Access hatch cover assembly with lift-assist assembly and method therefor A hatch cover with spring assembly to assist in lifting open the hatch cover lid. The lid is hinged to a frame so it can be rotated about the hinge to an open position. A spring or a pair of springs are attached to the underside of the lid. Each spring is a torsion ... | 05/15/2007 |
| 7198090 | Screen door latch guard plate A combination of a screen door latching apparatus, commonly having a small indoor push handle and a substantially thin guard plate that becomes retained between the handle housing and a frame of the screen door. The guard plate is elongated and protects the screenin... | 04/03/2007 |
| 7131480 | Colonial style pressure vent hurricane shutter A colonial style pressure-vent hurricane shutter having predetermined requisite strength of shutter framework (1) encompassing slatted-louver apertures (4) with slat-support guides (7) for protection against storm-borne objects, wind and rain an... | 11/07/2006 |
| 7036286 | Exterior window coverings The present invention is an exterior window covering or exterior shutter that is comprised of layers of materials to form a sandwich. The sandwich material has a layer of polycarbonate material. An embodiment of the sandwich material is comprised completely of synth... | 05/02/2006 |
| 7023151 | Switching device for controlling at least two motors A switching device for controlling at least two motors has a single converter, wherein the at least two motors are connected to the converter by a power line and a feedback line, respectively. At least one logic module is connected to the converter and evaluates sig... | 04/04/2006 |
| 6996934 | Pressure vent hurricane shutter A pressure-vent hurricane shutter having predetermined requisite strength of shutter framework (1) encompassing slatted-louver apertures (31) with slat-support guides (6) and (7) for protection against storm-borne objects, wind and rain a... | 02/14/2006 |
| 6955594 | Mine door system including an air pressure relief door A mine door of the present invention is adapted for installation in a mine passageway and includes a leaf adapted for swinging between a closed position and an open position. The leaf may be mounted in a frame, and a stopping wall may surround the frame. When closed... | 10/18/2005 |
| 6938665 | Door A door frame with a substantially continuous sealing surface supports a door with a substantially continuous sealing member mounted thereon. A stepped U-shaped frame member has an opening at one end that is closed with a square-cut member, such as a threshold. The f... | 09/06/2005 |
| 6935082 | Storm impact protection system A impact protection system for building openings, such as windows and doors, includes a shutter assembly having angled blades extending between frame members in such as manner that access areas are provided when the shutters are closed to permit insertion of a storm... | 08/30/2005 |
| 6910302 | Door hold open and controlled release mechanism A door hold open and controlled release mechanism is designed for usage in a doorway system having an inner door, an outer door and a door closer. It includes a catch mechanism and a catch release mechanism. The catch mechanism holds the outer door, typically a scre... | 06/28/2005 |
| 6837003 | Wooden shutter A wooden shutter. The wood shutter is installed on the wall around a window and includes an outer frame having a receiving open space and top and mounting portions at top and bottom ends of one side thereof. Louvers are arranged in parallel in the receiving open spa... | 01/04/2005 |
| 6813861 | Releasable window guard A quick release security grating is coupled to a retention frame by a hinge assembly which permits swinging movement from a closed position preventing intrusion through the window opening to an open position allowing emergency exit of an occupant through the window ... | 11/09/2004 |
| 6718692 | Safety hatch for preventing fall-through and unauthorized entry An access hatch having a frame containing an access opening, a grate, and a pull member pivotally coupled to the grate. The pull member has a proximal end and a distal end. The distal end is pivotally coupled to the grate near the far side of the grate, such that th... | 04/13/2004 |
| 6688682 | Window panel and roof visor system for a utility vehicle A visor and transparent window assembly for a utility vehicle cab roof includes a latch mechanism which is selectively operable to retain the transparent panel closed to the roof or to tilt the transparent panel upwardly. The visor overlying the transpare... | 02/10/2004 |
| 6640495 | Safety hatch for preventing fall-through and unauthorized entry An access hatch comprises a frame, a grate, and a pull member pivotally coupled to the grate. The frame contains an access opening. The grate has a near side and a far side. The near side is coupled to the frame for pivotal movement of the grate between a... | 11/04/2003 |
| 6526694 | Two portion frame for supporting doors and the like A two portion frame for an opening (10) comprises a fixed frame portion (12), which is secured about the opening (10); a removable frame portion (22), which is hinged to the fixed frame portion (12) by hinges (30) and locks (36) by which the removable fra... | 03/04/2003 |
| 6510654 | Locking mechanism for a window guard system A locking mechanism for a window guard system is disclosed. The window guard is mounted about the exterior of a window to its frame. The window guard is designed to be have the capability to be opened from the inside. A locking mechanism with three lock s... | 01/28/2003 |
| 6357509 | Security closure for dwelling openings A security closure device to protect a building opening and a closure member. The device includes a main security panel and a narrower secondary security panel that are hingedly mounted to each other. The side of the main security panel opposite to the sm... | 03/19/2002 |
| 6345476 | Perforated pleated shutter and method A pleated panel shutter system for an opening in a dwelling in which the pleated panel portions can be drawn to the side rendering the bulk of the opening available for ventilation, light, and the normal function of a window or a door. The pleated panel c... | 02/12/2002 |
| 6216391 | Quick-release grating incorporating pulleys and cables A quick-release grating comprising an actuator mounted to the grating, a frame to which the grating is rotatably mounted via of grating hinges, and a safety pin which prevents re-closure of the grating once it has been opened. The actuator comprises sprin... | 04/17/2001 |
| 6131354 | Hurricane protection for large windows and doors Hurricane shutter hardware for patio doors, picture windows, and other large openings on a house. The hardware consists of mounts that are permanently attached to a house, and brackets that are mounted to a shutter cover. The mounts are composed of unique... | 10/17/2000 |
| 5956900 | Security grating A security grating (1) for securing store windows (2) is constituted of a mesh (3) of overlaying horizontal bars (4) and vertical bars (5). The security grating further comprises a vertical frame member (6) on each lateral edge. The frame member (6) has a... | 09/28/1999 |
| 5941024 | Floor hatch with integrated security fence A floor hatch with a built-in security fence is described, where access to the understructure can only be provided wherein a pair of doors are pivoted outwardly to an open position and secured, forming two opposite sides of the security fence; a first gat... | 08/24/1999 |
| 5910076 | Extensible window and door guard An improved security apparatus including a security grill having an extending left section and right section. The left section includes a left vertical support member, a plurality of tubular lateral support members extending rightwardly therefrom, and a p... | 06/08/1999 |
| 5873198 | Window gate apparatus An apparatus for preventing unwanted entry through the windows of a structure includes an outer frame which is fastened to the structure and an inner frame which is connected to the outer frame by a pair of hinges and by a lock assembly. The lock assembly... | 02/23/1999 |
| 5862849 | Sunshade anti-theft window This invention relates to a sunshade anti-theft window which is composed of an anti-theft window and a rolling curtain; wherein the anti-theft window having a pivot arm installed at its bottom, the pivot arm being pivoted on bottom of window-still. The ro... | 01/26/1999 |
| 5852903 | Hurricane protection assembly for windows or doors A hurricane shutter for a building opening closure having a window or door frame recessed from the outer face of the building a predetermined depth-wise distance, the shutter being composed of a pair of normally open doors swingable to a closed position w... | 12/29/1998 |
| 5832666 | Window storm shield and guard assembly A window storm shield and guard assembly installable to fit within the jamb of a building window, or to fit onto the face of the building surrounding the jamb, the assembly, functioning both as a storm barrier to protect the window from strong winds and w... | 11/10/1998 |
| 5802765 | Door assembly and security guard A screen door assembly for use with a generally rectangular door jamb includes a hinged door comprising a peripheral frame having vertical frame members and horizontal frame members. The frame member is hinged so that the door can swing within the door ja... | 09/08/1998 |
| 5737874 | Shutter construction and method of assembly A shutter for withstanding hurricane wind forces has an outer rectangular frame formed by four U-shaped channel members. An inner rectangular frame, also formed of four U-shaped blade channels, is mounted within the U-shaped channels of the outer frame. A... | 04/14/1998 |
| 5653057 | Shutter assembly A shutter assembly comprising at least one generally rectangular shutter constructed and arranged to be removably attached to the window jambs and bottom sill of a window opening for covering a window is disclosed. The shutter assembly is attached to and ... | 08/05/1997 |
| 5623783 | Vented glass door A vented glass door includes a rectangular frame having a glass window fitted in the center thereof. At least one air passageway is provided commencing at the rear surface of the frame members, and passing through the frame members themselves and outwardl... | 04/29/1997 |
| 5613324 | Prefabricated door frame A door frame and a method for constructing a door frame assembly for use in prefabricated housing. The door frame assembly has a header frame and two side frames fixedly attached and constructed out of metal. The door frame assembly is slidable into posit... | 03/25/1997 |
| 5542215 | Sash supporting structure of hinged swinging window A sash supporting structure of a hinged swinging window includes a sash bar hinge secured to a horizontal rail of a sash and having a pivot shaft, and a support groove formed in a horizontal frame member of a window frame and pivotally receiving therein t... | 08/06/1996 |
| 5502934 | Skylight and/or roof opening guardrail assembly A skylight or roof opening protective device which comprises a pair of hinged protective frames which pivot outwardly from each other to define an "A" frame, when viewed at either end. Each frame is mounted on a base for temporary or permanent attachment ... | 04/02/1996 |
| 5474345 | Double panel lock A locking or latching device for double panels sharing the same opening or frame serves to secure the two panels together, to provide additional security over separate locks or latches for the two panels. The device is particularly adapted to securing two... | 12/12/1995 |
