Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Closers – Spring and lever
Patent
1994-11-08
1996-10-01
Mah, Chuck Y.
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Closers
Spring and lever
16 82, E05F 108
Patent
active
055600794
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention relates to door closers of the kind, sometimes known as door checks, which operate during the final pan of the closure movement of a door towards the associated door frame for the purpose of ensuring that the door closes properly and optionally is held in a closed position. Such closers may be employed alone or in combination with a closer device which operates over substantially the full range of closing movement, i.e. at least up to point at which the door check type closer takes over.
Conventional door check type closers are designed for mounting on the face of a door and usually incorporate a spring driven arm with a relatively large roller which protrudes a significant distance from the door so as to be visually obtrusive, and co-operates with a keep member installed on the door frame, the keep member affording a part which intercepts the roller as the door is closed towards the door frame.
DE-A-2207106 discloses such a door-check type closer which includes a housing designed for mounting within the thickness of a door at an edge face thereof and having a spring-driven arm which protrudes from the housing and is adapted to engage a trip face provided on an associated keep member adapted for mounting in the door frame, engagement of the arm with the trip face as the door is moved to its position of closure relative to the frame displacing the arm from a first position, in which it extends obliquely from the housing and is retained by the driving spring, through an over-centre position so that the spring then drives the arm to a second position in which it extends away from the door generally perpendicular to the edge face at which the housing is installed. When the door is opened, the keep member acts on the arm to return it to its first position.
However, it is possible for the arm to be displaced, accidentally or otherwise, from said first position whilst the door is open, with consequent risk of damage and failure of the door to close properly if an attempt is then made to close the door whilst the arm is in its second position, and it is an object of the present invention to overcome such disadvantage.
SUMMARY OF THE INVENTION
According to the invention we provide a door closer of the door check type comprising a housing for assembly with a door and supporting a pivotally mounted lever and driving spring means arranged to drive said lever in an operative direction, and a keep member for assembly with a door frame to be engaged by said lever and co-operate therewith to pull the door towards the door frame, wherein said housing comprises an elongate body which houses said driving spring means and a mounting plate at one end of said body arranged transverse to the length of said body whereby the housing body may be mounted within the thickness of the door with said mounting plate secured at an edge face of the door, wherein said lever comprises an arm which is movable between a first or "primed" position in which it extends generally in or parallel to the plane of the mounting plate and protrudes laterally therefrom, and a second or "actuated" position in which it extends away from the mounting plate in a direction generally transverse to the plane thereof and within the lateral boundaries of the mounting plate, and wherein said keep member comprises a keep body, which defines a recess adapted to receive the lever, and a mounting flange adjacent to an open mouth of said recess whereby the keep body may be recessed into the door frame with the mounting flange secured at an edge face of said door frame which is presented towards said edge face of the door at which the housing body is mounted, characterised in that the housing supports a displaceable latch member which engages with said lever to hold said arm in the first position, and the keep member is formed or provided with striker means so arranged and adapted as to engage the latch member or a part carried thereby or connected thereto when the housing is brought into register with the keep member as th
REFERENCES:
patent: 925184 (1909-06-01), Hess
patent: 3975791 (1976-08-01), Hettich et al.
patent: 4110867 (1978-09-01), Gwozdz
patent: 4295245 (1981-10-01), Malcom
International Search Report--Application No. PCT/GB 93/01383--Oct. 5, 1993.
Mah Chuck Y.
Samuel Heath & Sons PLC
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