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US 9,828,793 B2Granted
Door latch with low operating noise
AssigneeArchitectural Builders Hardware Mfg., Inc.
InventorAnkit Kirti Shah
Life of this patent
Estimating the term…
Abstract
A door latch assembly is provided with enhanced acoustic dampening characteristics, and includes a door bolt assembly having an inside barrel and an outside barrel configured for accommodating reciprocal sliding action of the inside barrel between a latch position and a release position. At least one barrel acoustic isolator is associated with at least one of the inside barrel and the outside barrel, and is configured for dampening sound generated by the reciprocal action.
Claims17
A door latch assembly with enhanced acoustic dampening characteristics, comprising:
- said door latch assembly including at least one door handle assembly connected to a door bolt assembly, said door handle assembly including a pivoting handle,
- said door bolt assembly including:
- an inside barrel;
- an outside barrel configured for accommodating axial reciprocal sliding action of said inside barrel between a latch position and a release position caused by movement of said at least one handle assembly acting against a biasing force created by a return spring connected to said inside barrel, said pivoting handle movement causing reciprocal movement of a strike connected to said inside barrel relative to said outside barrel;
- at least one barrel acoustic isolator associated with said inside barrel and movable therewith, being located between the inside barrel and the outside barrel, and configured for dampening sound generated by said reciprocal action;
- a finger;
- a door handle coupled to the finger such that the finger moves laterally along the axis of the inside barrel when the door handle is moved from a rest position to an actuating position;
- an anvil plate coupled to the inside barrel for moving the inside barrel to a release position;
- an anvil acoustic isolator being separate from said at least one barrel acoustic isolator and being fastened to a finger-receiving surface of the anvil plate and configured for dampening sound generated by the finger making contact with the anvil acoustic isolator;
- and
- the door handle assembly includes a screw plate, a finger acoustic isolator associated with and looped around the finger and a portion of the screw plate, being separate from said at least one barrel acoustic isolator and said anvil acoustic isolator, and being configured for dampening sound generated by the finger moving laterally along the axis of the inside barrel.
8 more elements
A door latch assembly with enhanced acoustic dampening characteristics, comprising:
- a door bolt assembly including:
- an inside barrel;
- an outside barrel configured for accommodating reciprocal sliding action of the inside barrel between a latch position and a release position;
- at least one circular acoustic isolator associated with and located between the inside barrel and the outside barrel, and configured for guiding the inside barrel in the outside barrel when accommodating the reciprocal sliding action of the inside barrel to reduce contact between the inside barrel and the outside barrel, thereby dampening sound generated by said reciprocal action;
- a finger;
- a door handle coupled to the finger such that the finger moves laterally along the axis of the inside barrel when the door handle is moved from a rest position to an actuating position;
- an anvil plate coupled to the inside barrel for moving the inside barrel to a release position;
- an anvil acoustic isolator being separate from said at least one barrel acoustic isolator and being fastened to a finger-receiving surface of the anvil plate and configured for dampening sound generated by the finger making contact with the anvil acoustic isolator;
- and
- the door handle assembly includes a screw plate, a finger acoustic isolator associated with and looped around the finger and a portion of the screw plate, being separate from said at least one barrel acoustic isolator and said anvil acoustic isolator, and being configured for dampening sound generated by the finger moving laterally along the axis of the inside barrel.
7 more elements
A door latch assembly with enhanced acoustic dampening characteristics, comprising:
- a door bolt assembly including:
- an inside barrel;
- an outside barrel configured for accommodating reciprocal, axial sliding action of the inside barrel between a latch position and a release position;
- at least one barrel acoustic isolator associated with located between the inside barrel and the outside barrel, and configured for dampening sound generated by said reciprocal action;
- an anvil plate secured inside the inside barrel and having a finger-receiving surface;
- a door handle assembly including:
- a finger moving laterally relative to a screw plate;
- a door handle coupled to the finger such that the finger moves laterally along the axis of the inside barrel when the door handle is moved from a rest position to an actuating position;
- a finger acoustic isolator secured around the finger and a portion of said screw plate to retain the finger when the door handle is in the rest position and configured for dampening sound generated by the finger moving laterally along the axis of the inside barrel, wherein the inside barrel is configured for receiving the finger at the finger-receiving surface of the anvil plate;
- an anvil plate coupled to the inside barrel for moving the inside barrel to a release position;
- an anvil acoustic isolator being separate from said at least one barrel acoustic isolator and being fastened to a finger-receiving surface of the anvil plate and configured for dampening sound generated by the finger making contact with the anvil acoustic isolator;
- and
- the door handle assembly includes a screw plate, said finger acoustic isolator associated with and looped around the finger and a portion of the screw plate, being separate from said at least one barrel acoustic isolator and said anvil acoustic isolator, and being configured for dampening sound generated by the finger moving laterally along the axis of the inside barrel.
10 more elements
A door latch assembly with enhanced acoustic dampening characteristics, comprising:
- a door bolt assembly including;
- a latch cylinder having a latch cylinder opening and a reciprocating strike;
- a door handle assembly including:
- a finger;
- and
- a door handle coupled to the finger such that the finger is moved in the latch cylinder opening when the door handle is moved from a rest position to an actuated position, the finger is configured for biasing the latch cylinder from a latch position to a release position;
- at least one acoustic isolator configured for dampening sound generated by the door latch assembly due to movement by at least one of the door handle, finger, and latch cylinder, said at least one acoustic isolator including a first isolator located between an inside barrel and an outside barrel for reducing sound generated through reciprocal sliding action of said inside barrel relative to said outside barrel, a second isolator located on said finger and a portion of a screw plate to reduce sound generated through transverse action of said finger, a third acoustic isolator located on an anvil in said inside barrel to reduce sound generated by impact of said finger on said anvil;
- and
- said door latch assembly is constructed and arranged to generate between 0.01 and 15 decibels over ambient noise;
- a finger;
- a door handle coupled to the finger such that the finger moves laterally along the axis of the inside barrel when the door handle is moved from a rest position to an actuating position;
- an anvil plate coupled to the inside barrel for moving the inside barrel to a release position;
- an anvil acoustic isolator being separate from said at least one barrel acoustic isolator and being fastened to a finger-receiving surface of the anvil plate and configured for dampening sound generated by the finger making contact with the anvil acoustic isolator;
- and
- the door handle assembly includes a screw plate, a finger acoustic isolator associated with and looped around the finger and a portion of the screw plate, being separate from the said at least one barrel acoustic isolator and said anvil acoustic isolator, and being configured for dampening sound generated by the finger moving laterally along the axis of the inside barrel.
12 more elements
A tubular door bolt with enhanced acoustic dampening characteristics, comprising:
- an inside barrel;
- an outside barrel configured for accommodating reciprocal sliding action of the inside barrel between a latch position and a release position;
- and
- at least one barrel acoustic isolator associated with, surrounding and mounted to the inside barrel for common movement, and configured for dampening sound generated by said reciprocal action;
- a finger;
- a door handle coupled to the finger such that the finger moves laterally along the axis of the inside barrel when the door handle is moved from a rest position to an actuating position;
- an anvil plate coupled to the inside barrel for moving the inside barrel to a release position;
- an anvil acoustic isolator being separate from said at least one barrel acoustic isolator and being fastened to a finger-receiving surface of the anvil plate and configured for dampening sound generated by the finger making contact with the anvil acoustic isolator;
- and
- the door handle assembly includes a screw plate, a finger acoustic isolator associated with and looped around the finger and a portion of the screw plate, being separate from said at least one barrel acoustic isolator and said anvil acoustic isolator, and being configured for dampening sound generated by the finger moving laterally along the axis of the inside barrel.
7 more elements
Dependencies are inferred from the claim text.