IP Library Granted Patent US 12,474,531
Granted Patent B2
US 12,474,531 · App. 18/738,122 · Granted Nov 18, 2025

Adapter dustcap with built-in cleaner

Inventors: Cheryl Johnson Beranek (Minnetonka, MN); John P. Hill (Oak Grove, MN); William J. Cruzen (Monticello, MN); James John Henschel (Chula Vista, CA)
Assignee: Clearfield, Inc.
G02B6/3866G02B6/3849G02B6/3882
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12,474,531
App. No.
18/738,122
Granted
Nov 18, 2025
Kind
B2
Abstract

A dustcap comprises a body having a cylindrical portion configured to receive a ferrule of an optical fiber connector, and an end portion opposite the cylindrical portion. The end portion includes a receptacle. The dustcap has a built-in cleaner disposed within the receptacle. The dustcap further comprises a removable cover configured to couple to the end portion of the dustcap. In another embodiment, the end portion includes a flat surface, the cleaner is disposed on the flat surface of the end portion, and the cover is configured to receive the end portion of the dustcap. In another embodiment, the cover has a receptacle and the cleaner is disposed within the receptacle, whereas the body comprises an end portion configured to receive at least a portion of the cover with the built-in cleaner. Embodiments encompass adapter dustcaps and adapter dustcap assemblies having built-in cleaners and alignment portions.

Claims (30)

1 . An adapter dustcap comprising:

a body comprising a dust cover connection portion configured to couple to a handle of dust cover of an optical fiber adapter, and an end portion opposite the dust cover connection portion, wherein the end portion includes a receptacle, wherein the dust cover of the optical fiber adapter is configured to be disposed between the body and a ferrule of an optical fiber connector;

a cleaner disposed within the receptacle;

an alignment portion disposed within the receptacle, the alignment portion comprising a toroidal shape and an aperture therethrough sized to receive and align a ferrule of an optical fiber connector within the receptacle; and

a sealing cover configured to removably couple to the end portion of the body or to the alignment portion.

2 . The adapter dustcap of claim 1 , wherein the dust cover connection portion is further configured to snap attach to the dust cover of the optical fiber adapter.

3 . The adapter dustcap of claim 1 , wherein the dust cover connection portion comprises a plurality of tabs configured to snap attach to the dust cover of the optical fiber adapter.

4 . The adapter dustcap of claim 1 , wherein the dust cover connection portion is further configured to snap attach to the handle of the dust cover of the optical fiber adapter.

5 . The adapter dustcap of claim 1 , wherein the dust cover connection portion comprises a plurality of tabs configured to snap attach to the handle of the dust cover of the optical fiber adapter.

6 . The adapter dustcap of claim 1 , wherein the body further comprises a divider between the dust cover connection portion and the end portion of the body.

7 . The adapter dustcap of claim 1 , wherein the alignment portion is configured to align the ferrule perpendicularly to a surface of the cleaner.

8 . The adapter dustcap of claim 1 , wherein the cleaner is located between a bottom surface of the alignment portion and a bottom surface of the receptacle.

9 . The adapter dustcap of claim 1 , wherein the receptacle includes one or more recesses and the alignment portion includes one or more protrusions, each of the one or more recesses being configured to receive and retain a corresponding one of the one or more protrusions.

10 . An adapter dustcap assembly comprising:

a body comprising an adapter connection portion configured to couple to an optical fiber adapter, and an end portion opposite the adapter connection portion, wherein the end portion includes a receptacle, and wherein the optical fiber adapter is configured to be disposed between the body and a ferrule of an optical fiber connector;

a cleaner disposed within the receptacle;

an alignment portion disposed within the receptacle, the alignment portion comprising a toroidal shape and an aperture therethrough sized to receive and align a ferrule of an optical fiber connector within the receptacle; and

a sealing cover configured to removably couple to the end portion of the body or to the alignment portion.

11 . The adapter dustcap assembly of claim 10 , wherein the alignment portion is configured to align the ferrule perpendicularly to a surface of the cleaner.

12 . The adapter dustcap assembly of claim 10 , wherein the cleaner is located between a bottom surface of the alignment portion and a bottom surface of the receptacle.

13 . The adapter dustcap assembly of claim 10 , wherein the receptacle includes one or more recesses and the alignment portion includes one or more protrusions, each of the one or more recesses being configured to receive and retain a corresponding one of the one or more protrusions.

14 . A method for manufacturing an adapter dustcap, the method comprising:

providing an adapter dustcap body, wherein the adapter dustcap body comprises a dust cover connection portion configured to couple to a dust cover of an optical fiber adapter, and wherein the end portion of the adapter dustcap body is opposite the dust cover connection portion, and wherein the dust cover is configured to be disposed between the adapter dustcap body and a ferrule of an optical fiber connector;

inserting a cleaner and an alignment portion into a receptacle of an end portion of the adapter dustcap body such that the cleaner is located between a bottom surface of the alignment portion and a bottom surface of the receptacle, wherein the alignment portion comprises a toroidal shape and an aperture therethrough sized to receive and align a ferrule of an optical fiber connector within the receptacle; and

removably coupling a sealing cover to the end portion of the adapter dustcap body or to the alignment portion.

15 . The method of claim 14 , wherein the dust cover connection portion comprises a plurality of tabs configured to snap attach to the dust cover of the optical fiber adapter.

16 . The method of claim 14 , wherein the dust cover connection portion comprises a plurality of tabs configured to snap attach to the handle of the dust cover of the optical fiber adapter.

17 . The method of claim 14 , wherein the alignment portion is configured to align the ferrule perpendicularly to a surface of the cleaner.

18 . The method of claim 14 , wherein the receptacle includes one or more recesses and the alignment portion includes one or more protrusions, and wherein the method further comprises receiving and retaining, by each of the one or more recesses, a corresponding one of the one or more protrusions.

19 . The method of claim 14 , further comprising applying the cleaner to the bottom surface of the alignment portion prior to the inserting step.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 31, 2024
From: BERANEK, CHERYL JOHNSON; HILL, JOHN P.; CRUZEN, WILLIAM J.; HENSCHEL, JAMES JOHN
To: CLEARFIELD, INC.
Reel/Frame 069090/0307 →
Continuity (4)
Continuation In Part 18299139 · Apr 12, 2023
Continuation 17816613 · Aug 1, 2022
Continuation 17028083 · Sep 22, 2020
Related Publication 20240329331A1 · Oct 3, 2024
References Cited (27)
US 1459589A · Hoffman · 1923 [cited by applicant]
US 6398422B1 · Szilagyi et al. · 2002 [cited by applicant]
US 6810552B2 · Miyake et al. · 2004 [cited by applicant]
US D623369S · Sugita et al. · 2010 [cited by applicant]
US 8041177B2 · Zimmel et al. · 2011 [cited by applicant]
US 10481342B1 · Yang et al. · 2019 [cited by applicant]
US 10739531B2 · Takanashi et al. · 2020 [cited by applicant]
US 11675139B2 · Beranek · 2023 [cited by applicant]
US 11796742B1 · Zhang et al. · 2023 [cited by applicant]
US 20020166190A1 · Miyake et al. · 2002 [cited by applicant]
US 20050220434A1 · Hsieh · 2005 [cited by examiner]
US 20100302530A1 · Liu et al. · 2010 [cited by applicant]
US 20110047731A1 · Sugita et al. · 2011 [cited by applicant]
US 20110229088A1 · Isenhour et al. · 2011 [cited by applicant]
US 20160259131A1 · Erdman et al. · 2016 [cited by applicant]
US 20160349459A1 · Collier et al. · 2016 [cited by applicant]
US 20170254963A1 · Sparrowhawk et al. · 2017 [cited by applicant]
US 20180120515A1 · Samal et al. · 2018 [cited by applicant]
US 20190346630A1 · Yang et al. · 2019 [cited by applicant]
US 20220091348A1 · Beranek · 2022 [cited by examiner]
JP 2010117443A · 2010 [cited by applicant]
JP 2019200411A · 2019 [cited by applicant]
WO 2012112343A1 · 2012 [cited by applicant]
WO 2015017170A1 · 2015 [cited by applicant]
WO 2018199331A1 · 2018 [cited by applicant]
European Examination Report dated Aug. 23, 2024 issued in European Application No. 21873256.8. [cited by applicant]
European Examination Report dated Sep. 10, 2024 issued in European Application No. 21873112.3. [cited by applicant]