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| Number | Title | Issue Date |
| 7356878 | Door closer A door closer includes an anchor assembly for mounting on a door frame, an actuator assembly for mounting within the thickness of a door which is hinged for movement between open and closed positions, an operating member coupled by a linkage to the anchor assembly a... | 04/15/2008 |
| 7331435 | Continuously blockable arresting device A continuously blockable arresting device includes a housing and a shaft having an end received in the housing and which may be externally acted upon causing rotation thereof. The housing has a fluid-filled working space and two subchambers which can be connected to... | 02/19/2008 |
| 7007614 | Expandable shelf An expandable locker shelf is disclosed that can be placed between two substantially vertical members, such as in a locker. The expandable shelf includes a first section having a rack, a second section, and a lever arm having a pinion. The first and second sections ... | 03/07/2006 |
| 7003847 | Door closer A door closer comprising a housing, a member for driving engagement with a door, the member being rotatable relative to the housing in a door opening direction and in a door closing direction, a spring apparatus within the housing providing a resilient bias, the res... | 02/28/2006 |
| 6886217 | Door closer A door closer having a pair of main driving springs, a fluid-filled damper arrangement and a pair of thrust springs is provided, the thrust springs coming into effect during the latter part of a door closing operation, so as to provide an augmented closing force at ... | 05/03/2005 |
| 6625847 | Door closers A door closer comprises an actuator assembly (20) adapted for fitting within the thickness of a door and an anchor member (10) adapted for fitting in a door frame in opposed relation to said edge face of the door. An operating member (30) is driven by spr... | 09/30/2003 |
| 6493904 | Door closer A door closer includes casing fixedly fastened to a door frame, a hydraulic cylinder installed in the casing and holding a hydraulic fluid, a coupling block installed in one end of the hydraulic cylinder, the coupling block having a pivot shaft connected ... | 12/17/2002 |
| 5829097 | Hold open control for a door closer A blocking device for preventing a door closer from achieving a degree of rotation corresponding to a door hold-open position. A blocking device is provided which can be selectively protruded into a door closer housing to block the translation of a cam pl... | 11/03/1998 |
| 5586361 | Door stop, in particular for motor vehicle doors A door stop including an hydraulic cylinder connectable to one of a door assembly part, a stop piston longitudinally displaceable in the hydraulic cylinder and connected with another part of the door assembly by a piston rod, and two spring-biased closing... | 12/24/1996 |
| 5417013 | Overhead door closer with slide rail for concealed installation in door panels or door frames A door closer having a slide rail linkage and capable of being essentially fully concealed upon installation in either a door panel or door frame, has a housing in which is mounted a closer shaft. The closer shaft has a first end projecting from the housi... | 05/23/1995 |
| 5272787 | Overhead concealed door closer, mechanically, hydraulically operated An overhead concealed door closer, hydraulicly operated, within a narrow housing case which fits within a header. The housing case has a step radius design along one side and the aperture for the pinion is off-center toward the step radius design side. Hy... | 12/28/1993 |
| 4785493 | Door check A door check wherein a housing is affixed to the pivotable panel and a guide rail is affixed to the frame of a door. The housing contains a shaft which is rigidly connected with one end of an arm the other end of which is slidably guided by the rail. The ... | 11/22/1988 |
| 4775037 | Hydraulic device A hydraulic device for controlling the knee-joint function in a leg prosthesis has a cylinder which is divided into first and a second cylinder parts adapted to be fixed to the lower leg of the prosthesis, and a piston rod which carries one piston in each... | 10/04/1988 |
| 4662486 | Hydraulic device A hydraulic device for controlling the knee-joint function in a leg prosthesis has a cylinder which is divided into first and a second cylinder parts adapted to be fixed to the lower leg of the prosthesis, and a piston rod which carries one piston in each... | 05/05/1987 |
| 4489640 | Door operating apparatus A piston and geared rack assembly are moved by pressurized air in opposite directions within a power cylinder housing as the vehicle operator registers door closing and opening commands in a solenoid valve. This lateral movement is converted to rotary mov... | 12/25/1984 |
| 4483043 | Automatic door closer An automatic door closer has an elongated fluid-filled housing having a closed end and an opposite open end, a plug closing the open end of the housing, a first piston reciprocatably arranged in the housing and dividing the latter into a first pressure sp... | 11/20/1984 |
| 4455708 | Door closer having a braking mechanism comprising an elastomeric bag A door closer comprising at the end of one of two pivotally interconnected arms a closing device whose housing encloses a cylindrical piston driven by the arm through a rack-and-pinion system. On each side of this piston a return spring and a bag, filled ... | 06/26/1984 |
| 4414703 | Door closer and holder A door closer and holder has cylinders with pistons therein responsive to the relative swinging motion between a door panel and a door frame. A spring is loaded by door opening and acts against one piston to effect door closing. Various hydraulic passages... | 11/15/1983 |
| 4178655 | Counterbalance mechanism A mechanism for use in counterbalancing the weight of a lid or closure incident to movements thereof between closed and open portions is in the form of a spring pressurized, hydraulic piston-cylinder arrangement. The mechanism preferably includes means pr... | 12/18/1979 |
| 4080687 | Door closer A door closer includes a cylinder-and-piston arrangement in which the piston is received in the cylinder for displacement between a rest position corresponding to a closed position of the door, and an end position corresponding to the fully open position ... | 03/28/1978 |
| 4068344 | Door hinge mechanism A door hinge device applicable to a door, comprising a pair of flanges, a cylinder connected to one of these flanges and housed with a pair of pistons, a valve means formed on one of the pistons, a partition mounted between the flanges, an orifice formed ... | 01/17/1978 |
