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| Number | Title | Issue Date |
| 7155779 | Automatic lift and turn hinge and gate An automatic hinge having an upper or left hand section with an arcuate interior or lower edge, a central section with an arcuate left hand or upper edge and an arcuate right hand or lower edge, and a lower or right hand section with an upper or interior edge. The s... | 01/02/2007 |
| 7140075 | Vertical door conversion kit with lag mechanism and motion range limiter A door hinge mechanism allowing two dimensional motion of the door as it opens, combined with at least one mechanism allowing control of the range of horizontal motion of the door during normal operations. Horizontal lag adjustment and range limitation of the mechan... | 11/28/2006 |
| 7013531 | Gravity actuated hinge assembly Gravity hinge assembly which does not rely upon an axial rod or pintle to maintain axial alignment between the cam cylinders. The assembly incorporates an inter-connective attachment arrangement between the upper rotating cam cylinder and the door connection plate t... | 03/21/2006 |
| 6073396 | Gate hinge A gate hinge is provided which enables a gate to be maintained upright and level in a first closed position and to clear obstacles or follow the contour of the ground when swung into a second position. The gate hinge hereof can be used in combination with... | 06/13/2000 |
| 5711121 | Partition system A cubicle forming partition system has a construction which permits the use of wall panels made entirely from a cost effective volume of solid surface plastic sheets. The wall panels are rigidly secured in spaced relation from a room floor by mounts which... | 01/27/1998 |
| 5500984 | Refrigerator door opening/closing apparatus A refrigerator includes a housing and a door hinged to the housing. The hinge carries a door opening/closing apparatus in the form of a follower slide member carried by the door and arranged to slide upwardly along a camming slide member during opening of... | 03/26/1996 |
| 5371987 | Acoustical door An acoustic door system including an improved peripheral seal and a lower adjustable seal. An acoustic door swings on camming hinges which raise the door upon opening. A lower vertically adjustable U bracket has a lower neoprene sealing strip which contac... | 12/13/1994 |
| 5184422 | Swing away manway assembly A swing away manway assembly for a tubular fluid conveying system having a manway opening in a first horizontal plane, the assembly including a cover disposed in a second parallel horizontal plane. The manway cover includes a circumferential sealing means... | 02/09/1993 |
| 5138796 | Self-closing gate A self-closing gate includes a gate assembly (10) with at least one gate section (18) and a rotational mechanism (14). The rotational mechanism (14) includes structure (44) for rotatably mounting the gate section, structure (38) for storing rotational ene... | 08/18/1992 |
| 5133152 | Heavy duty constant use self closing gate A self closing gate comprising a pair of first and second parallel and spaced vertically extending stationary posts. The gate is mounted between the posts for rotation about the first post between positions closing the space between the posts and opening ... | 07/28/1992 |
| 5045636 | Low closure force EMI/RFI shielded door An EMI/RFI shielded door assembly for use in controlling the movement of EMI/RFI in a shielded room or enclosure. The assembly has an electrically conductive frame defining a generally rectangular opening. A conductive door stop is formed on the inner sur... | 09/03/1991 |
| 4391020 | Gravity return hinge having an axle rod in an axle sleeve An automatic return hinge having a primary and a secondary hinge, the primary hinge being furnished with an axle rod with spiral grooves, three locating balls in an axle sleeve roll along the spiral grooves on the axle rod as the door is opened and closed... | 07/05/1983 |
| 4253275 | Gate hinge and lubricating means therefor A gate hinge embodies an upstanding casing closed at its lower end and attached to a supporting post. A pintle is fixedly mounted within the casing and concentric therewith. Lower, upper and intermediate sleeves surround the pintle within the casing with ... | 03/03/1981 |
