# US 2019/0376331 A1 · Door hardware noise reduction and evaluation

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2019/0376331 A1
- Document ID: US20190376331A1
- Status: Published application
- Kind: A1
- Application number: 16/433,241
- Filed: 2019-06-06
- Published: 2019-12-12
- Earliest claimed: 2018-06-06
- Assignees: Schlage Lock Company LLC
- Applicants: Schlage Lock Company LLC
- Inventors: Aaron P. McKibben; Gregory Musselman; Brian C. Eickhoff; Paul R. Arlinghaus; Vijayakumar Mani; Benjamin L. Miller; Saagar Mohammed
- Web page: https://patentgrep.com/patent/US20190376331A1

## CPC

- E05F 5/10: with piston brakes
- E05B 3/06: by means arranged in or on the rose {or escutcheon}
- E05B 17/0041: {Damping means (for vehicles E05B77/42; time locks with retarders E05B43/00)}
- E05B 65/1053: {sliding towards and away form the door}
- E05F 1/1261: {for counterbalancing}
- E05F 5/02: specially for preventing the slamming of {swinging} wings {during final closing movement, e.g. jamb stops}
- E05B 65/1006: {of the vertical rod type}
- E05Y 2201/68: Handles, cranks
- E05Y 2900/132: Doors
- E05F: DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05B: LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF

## Abstract

An example exit device includes a mounting assembly configured for mounting to a door, a pushbar movably mounted to the mounting assembly, a latchbolt mounted to the mounting assembly for movement between an extended position and a retracted position, and a rocker lever engaged between the pushbar and the latchbolt such that the pushbar is operable to move the latchbolt between the extended position and the retracted position. The exit device further includes impact dampener mounted to the exit device and configured to dampen impact between a first component of the exit device and a second component of the exit device during movement of the first component relative to the second component.

## Claims

### Claim 1

An exit device, comprising:
a mounting assembly configured for mounting to a door;
a pushbar movably mounted to the mounting assembly;
a latchbolt mounted to the mounting assembly for movement between an extended position and a retracted position;
a rocker lever engaged between the pushbar and the latchbolt such that the pushbar is operable to move the latchbolt between the extended position and the retracted position; and
an impact dampener mounted to the exit device and configured to dampen impact between a first component of the exit device and a second component of the exit device during movement of the first component relative to the second component.

### Claim 2 (depends on 1)

The exit device of claim 1, wherein the first component is the rocker lever.

### Claim 3 (depends on 2)

The exit device of claim 2, wherein the mounting assembly comprises the second component.

### Claim 4 (depends on 2)

The exit device of claim 2, wherein the second component is the latchbolt.

### Claim 5 (depends on 1)

The exit device of claim 1, wherein the first component is the latchbolt.

### Claim 6 (depends on 5)

The exit device of claim 5, wherein the mounting assembly comprises the second component.

### Claim 7 (depends on 1)

The exit device of claim 1, wherein the impact dampener comprises a cushion.

### Claim 8 (depends on 1)

The exit device of claim 1, wherein the impact dampener comprises a fluid damper.

### Claim 9 (depends on 8)

The exit device of claim 8, wherein the fluid damper is configured to slow movement of the latchbolt from the retracted position toward the extended position.

### Claim 10 (depends on 1)

The exit device of claim 1, wherein the first component comprises a noise damping metal material at an impact location.

### Claim 11

A system, comprising:
a housing assembly configured for mounting to a door;
a manual actuator movably mounted to the housing assembly;
a bolt operably connected with the manual actuator such that movement of the manual actuator drives the bolt between an extended position and a retracted position, wherein movement of the bolt from the retracted position to the extended position causes a first component to contact a second component at a point of contact; and
a contact dampener configured to dampen vibrations resulting from contact between the first component and the second component.

### Claim 12 (depends on 11)

The system of claim 11, wherein the latchbolt comprises the first component, wherein the housing assembly comprises the second component, and wherein the contact dampener comprises a fluid damper mounted to the second component and operable to engage the first component as the latchbolt moves from the retracted position to the extended position.

### Claim 13 (depends on 11)

The system of claim 11, wherein the contact dampener comprises a noise damping metal material.

### Claim 14 (depends on 13)

The system of claim 13, wherein the first component is formed of the noise damping metal material at the point of contact.

### Claim 15 (depends on 11)

The system of claim 11, wherein the contact dampener comprises an adhesive pad having one side adhered to the first component.

### Claim 16 (depends on 11)

The system of claim 11, wherein movement of the bolt from the extended position to the retracted position causes a third component to impact a fourth component at a point of impact; and
wherein the system further comprises an impact dampener configured to dampen vibrations resulting from impact between the third component and the fourth component.

### Claim 17 (depends on 16)

The system of claim 16, wherein the contact dampener and the impact dampener are of different configurations.

### Claim 18 (depends on 18)

The system of claim 18, wherein the impact dampener is positioned at the point of impact.

### Claim 19 (depends on 11)

The system of claim 11, wherein the manual actuator comprises a pushbar, and wherein the first component comprises a rocker lever engaged between the pushbar and the bolt.

### Claim 20 (depends on 11)

The system of claim 11, wherein the contact dampener is positioned at the point of contact.