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.
Claims20
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;
- and
- at least one barrel acoustic isolator associated with at least one of the inside barrel and the outside barrel, and configured for dampening sound generated by said reciprocal action.
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;
- and
- at least one acoustic isolator associated with at least one of 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 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 barrel acoustic isolator associated with at least one of the inside barrel and the outside barrel, and configured for dampening sound generated by said reciprocal action;
- and
- an anvil plate secured inside the inside barrel and having a finger-receiving surface;
- a door handle assembly including:
- a finger;
- and
- 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 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 of using the finger-receiving surface of the anvil plate.
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;
- and
- said door latch assembly is constructed and arranged to generate between 0.01 and 15 decibels over ambient noise.
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 at least one of the inside barrel and the outside barrel, and configured for dampening sound generated by said reciprocal action.
Dependencies are inferred from the claim text.