Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Closure checks
Patent
1995-05-30
1996-04-30
Howell, Daniel W.
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Closure checks
16DIG7, 16 49, 292201, 292144, 292 92, E05F 300, E05F 502, E05C 306, E05B 6510
Patent
active
055112846
ABSTRACT:
A door hold open device is disclosed for maintaining a door swingably mounted on a door jamb in an open position. The door hold open device includes an elongate track housing mounted on the door jamb, and a shaft disposed within the track housing. The shaft extends along a horizontal axis and is mounted for free rotation about the axis. A slider block having a threaded bore threadably engages a threaded portion of the shaft. The slider block is capable of moving linearly along the horizontal axis and causes the axial rotational movement of the shaft as it moves linearly from side-to-side. An arm link is pivotally connected at one of its ends to the slider block and pivotally connected at its other end to the door. The arrangement is such that upon manually opening and closing the door, the arm link moves the slider block linearly from side-to-side thereby causing the axial rotational movement of the shaft. A clutch mechanism is disposed adjacent the shaft and is selectively engagable with a non-threaded end of the shaft for preventing the rotation of the shaft thereby locking the slider block in a stationary position for maintaining the door in an open position.
REFERENCES:
patent: 3864875 (1975-02-01), Hewitt
patent: 3964125 (1976-06-01), Tansley
patent: 4086681 (1978-05-01), Nakanishi
patent: 4878265 (1989-11-01), Nesbitt
patent: 4979261 (1990-12-01), Lasier et al.
patent: 5048150 (1991-09-01), Guerin
patent: 5048151 (1991-09-01), Orii et al.
patent: 5131115 (1992-07-01), Sarto
patent: 5142735 (1992-09-01), Konishi
Bhargava Adesh
Howell Daniel W.
Noe Keith F.
Palermo Robert F.
Schlage Lock Company
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