IP Library › Granted Patent US 12,735,925
Granted Patent B2
US 12,735,925 · App. 19/014,283 · Granted Sep 15, 2026

Door stopper

Inventor: Lifeng Zhang (Yuyao, CN)
Assignee: Ningbo Hyderon Hardware Co., Ltd.
E05C17/54E05C17/047E05C19/04
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 12,735,925
App. No.
19/014,283
Granted
Sep 15, 2026
Kind
B2
Abstract

A door stopper comprising a door stopper head; the door stopper head is configured to be an arc shape, one end of the door stopper head is connected to a door stopper body used for stopping a door body, a spherical groove is formed in the door stopper head, and an anti-slip ball is arranged in the spherical groove; when in use, the anti-slip ball is in contact with the ground such that the anti-slip effect is achieved; friction is produced between the anti-slip ball and the spherical groove, and the anti-slip ball stops rotating; friction is also produced between the anti-slip ball and the ground for stopping the door; the surface of the anti-slip ball is provided with an anti-static material, so that the problem relating to easy absorption of dust and debris is solved and the dirt resistance is significantly enhanced.

Claims (4)

1 . A door stopper, comprising:

a door stopper head ( 1 ), wherein the door stopper head ( 1 ) is configured to be an arc shape, wherein one end of the door stopper head ( 1 ) is connected to a door stopper body ( 2 ) used for stopping a door body ( 5 ), wherein a spherical groove ( 3 ) is formed in the door stopper head ( 1 ), wherein an anti-slip ball ( 4 ) is arranged in the spherical groove ( 3 ), wherein the door stopper body ( 2 ) moves by means of pushing the door body ( 5 ), and wherein friction is produced between the anti-slip ball ( 4 ) inside the door stopper head ( 1 ) and the spherical groove ( 3 ) as well as between the anti-slip ball ( 4 ) and the ground, so that the anti-slip ball ( 4 ) stops rotating and the door body ( 5 ) is stopped,

wherein the door stopper body ( 2 ) is internally provided with a slot ( 6 ), and wherein a plurality of reinforcing plates ( 7 ) arranged in a criss-cross manner are connected in the slot ( 6 ).

2 . The door stopper of claim 1 , wherein the surface of the door stopper body ( 2 ) is configured to be inclined.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 30, 2026
From: ZHANG, LIFENG
To: NINGBO HYDERON HARDWARE CO., LTD.
Reel/Frame 075452/0774 →
Continuity (1)
Related Publication 20260193914A1 · Jul 9, 2026
References Cited (47)
US 167590A · Vandeventer · 1875 [cited by examiner]
US 288028A · Coultaus · 1883 [cited by examiner]
US 382283A · Thomas · 1888 [cited by examiner]
US 397380A · Mitchell, Jr. · 1889 [cited by examiner]
US 572622A · Westra · 1896 [cited by examiner]
US 679400A · Smith · 1901 [cited by examiner]
US 767001A · Mann · 1904 [cited by examiner]
US 1423034A · Scholl · 1922 [cited by examiner]
US 1469943A · Macura · 1923 [cited by examiner]
US 1560562A · Golding · 1925 [cited by examiner]
US 1636627A · Craven · 1927 [cited by examiner]
US 1845417A · Ingham · 1932 [cited by examiner]
US 1875965A · Waters · 1932 [cited by examiner]
US 1914542A · Teich · 1933 [cited by examiner]
US 2030705A · Llewellyn · 1936 [cited by examiner]
US D120752S · Gallinger · 1940 [cited by examiner]
US 2218780A · Andrews · 1940 [cited by examiner]
US 2487427A · Drake · 1949 [cited by examiner]
US 2595709A · Sands · 1952 [cited by examiner]
US 2973215A · Johnson · 1961 [cited by examiner]
US 2988392A · Kuo · 1961 [cited by examiner]
US 3129024A · Schuessler · 1964 [cited by examiner]
US 3129969A · Kuo · 1964 [cited by examiner]
US 3297347A · Rogers · 1967 [cited by examiner]
US 3415561A · Knox · 1968 [cited by examiner]
US 4688761A · Wilcox · 1987 [cited by examiner]
US 4736974A · Rosenthal · 1988 [cited by examiner]
US 5217269A · Wiltberger · 1993 [cited by examiner]
US 5711560A · Gilbertson · 1998 [cited by examiner]
US D410380S · Towns · 1999 [cited by examiner]
US 6481052B1 · Beall · 2002 [cited by examiner]
US 7644964B2 · Bushey · 2010 [cited by examiner]
US D644084S · Canavan · 2011 [cited by examiner]
US 8296902B1 · Adrian · 2012 [cited by examiner]
US 9163438B2 · Mackay · 2015 [cited by examiner]
US 10196848B1 · Fortmann · 2019 [cited by examiner]
US D856128S · Kazutaka · 2019 [cited by examiner]
US 10760309B1 · Bowman · 2020 [cited by examiner]
US 10883297B1 · Seise · 2021 [cited by examiner]
US D1005807S · Zhang · 2023 [cited by examiner]
US 12173544B2 · Reed · 2024 [cited by examiner]
US D1073426S · Rizos · 2025 [cited by examiner]
US 20240384579A1 · Wang · 2024 [cited by examiner]
US 20240418019A1 · Dimercurio · 2024 [cited by examiner]
JP 3201272U · 2015 [cited by examiner]
KR 20090099138A · 2009 [cited by examiner]
KR 20100009816U · 2010 [cited by examiner]