US2767005A - Friction door catch - Google Patents
Friction door catch Download PDFInfo
- Publication number
- US2767005A US2767005A US348417A US34841753A US2767005A US 2767005 A US2767005 A US 2767005A US 348417 A US348417 A US 348417A US 34841753 A US34841753 A US 34841753A US 2767005 A US2767005 A US 2767005A
- Authority
- US
- United States
- Prior art keywords
- strike
- socket
- catch
- door
- head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C19/00—Other devices specially designed for securing wings, e.g. with suction cups
- E05C19/06—Other devices specially designed for securing wings, e.g. with suction cups in which the securing part if formed or carried by a spring and moves only by distortion of the spring, e.g. snaps
- E05C19/063—Released by pull or pressure on the wing
- E05C19/066—Released by pull or pressure on the wing made of plastics, e.g. hook-and-loop type fastener
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S16/00—Miscellaneous hardware, e.g. bushing, carpet fastener, caster, door closer, panel hanger, attachable or adjunct handle, hinge, window sash balance
- Y10S16/27—Bearings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T24/00—Buckles, buttons, clasps, etc.
- Y10T24/45—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock]
- Y10T24/45225—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock] including member having distinct formations and mating member selectively interlocking therewith
- Y10T24/45602—Receiving member includes either movable connection between interlocking components or variable configuration cavity
- Y10T24/45775—Receiving member includes either movable connection between interlocking components or variable configuration cavity having resiliently biased interlocking component or segment
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T292/00—Closure fasteners
- Y10T292/08—Bolts
- Y10T292/0876—Double acting
Definitions
- This invention relates to friction door catches of the class used in conjunction with a door strike for holding a door in open or shut position. Although not limited to such applications, it is particularly designed for use in holding closed the doors of kitchen cabinets.
- Figure 1 is a plan view of the presently described friction door catch in unengaged position illustrating the manner of mounting it with respect to a door and a door strike;
- Figure 2 is a sectional view in side elevation of the catch illustrated in Figure 1;
- Figure 3 is a plan view, partly broken away, illustrating the door catch and strike members of Figure l in engaged position.
- the presently described friction door catch illustrated generally at is adapted to be used in conjunction with a strike indicated generally at 12.
- the catch and strike are mounted one on each of two relatively movable members. in the conventional installation it is preferred to mount the catch on a stationary member such as a shelf 14 of a kitchen cabinet and the strike on the movable element of the assembly, such as the door 16 of the cabinet.
- the strike 12 may assume various configurations but preferably comprises a ball-headed screw having a threaded shank 18 and a round slotted head 20. This may conveniently be inserted in the door at a station opposite the catch member.
- the catch 10 is provided with a base portion 22 which nited States Patent 2,767,005 iatented Oct. 16, 1956 is transversely perforated to accommodate a pair of screws 24, 26 by means of which the catch may be afiixed to the shelf 14.
- the socket portion 28 Connected to the base portion, and preferably formed integrally therewith, is the socket portion 28.
- this is formed from a hard material which is somewhat flexible or deformable at ordinary room temperatures. Although it may be fabricated from various sorts of materials fulfilling these requirements, I have discovered that the plastic material polyethylene has properties such as to be suited unique- 1y for the contemplated purpose.
- Polyethylene is a solid substance which is extremely resistant to Wear and abrasion, but which is flexible or deformable at ordinary room temperatures. It is made by polymerizing ethylene in the presence of a suitable catalyst at a pressure of the order of 1000 pounds per square inch and a temperature of the order of 200 C. Under these conditions the ethylene forms a high molecular Weight, branched chain polymer having the general formula ('CH2 )1L- It has been described as a synthetic paraffin wax and resembles the latter material in being somewhat deformable and normally having a somewhat waxy surface. Also, it is substantially free from the rebound which characterizes a rubbery material. These properties are of primary importance in connection with the presently described application and make polyethylene almost ideally suited for the fabrication of the socket member of the friction door catch described herein.
- the socket 2.8 is offset vertically from the base when the catch is in operative position. This forms a shoulder or step 30 and makes possible the automatic adjustment of the socket for vertical misalignment of the socket and the strike, which may occur because of faulty installation, or more usually, because of sagging of the door.
- the outer end 32 of the opening in socket 28 is outwardly flared to provide a guiding section which guides the rounded head 20 of the strike within the catch even though the two members be misaligned.
- the inner section 34 of the opening in the socket member has a slight inward taper. It comprises a holding section which frictionally engages the head of the strike and holds it within the socket. This action is facilitated and made positive by the deformability of the plastic material of which the socket section is made. Thus as the head of the strike enters the socket, it pushes the walls thereof outwardly as is particularly evident in Figure 3, although somewhat exaggerated in degree. The resulting tension then securely locks the strike within the socket until it is removed by force exerted against the door.
- the length of the socket bore 34 is substantially greater than the radius of the striker head 20 and that the wall of the bore engages and grips the strike head over a surface which terminates closely adjacent the forward, slotted, end of said head.
- said head may be moved to various depths within the bore, as by adjusting the length of extension of the strike member from the door 16.
- correspondingly greater force is required to move the strike head deeper into the bore and also to retract it therefrom, because of the greater length of travel of the strike head in frictional contact with the bore wall.
- these force requirements are increased substantially when the bore is tapered in the manner illustrated. Accordingly, the force required to open and close the door 16 may be adjusted as desired by varying the depth to which the strike head penetrates the bore of the socket.
- the presently described friction catch has several important advantages. In the first place, it is easily installed. This is accomplished by fastening the catch 10 in the desired position on the shelf or other support member and then inserting the strike until the head is firmly seated against the rear wall of the socket. The door then is closed with some force 7 against the projecting spur of the strike. This makes a mark indicating the exact location on the door where the strike is to be fastened.
- the installation is readily accomplished, furthermore, even though made on diverse types of cabinets.
- the catch member may be stationed on the shelf with its front face substantially flush with the front face of the shelf.
- the front face of step 30 maybe placed substantially flush with the a front face of the shelf.
- a frictional door catch comprising a frictional socket member made of resiliently deformable plastic material and having a bore extending inwardly of the forward end thereof, air passageway means in the socket member adjacent and communicating with the rearward end of the bore, and a base integral with and extending rearwardlyof the socket member for securing the latter to a support,
- the plane of the concatch the position of the step may readily be made to conform to the offset of the lip.
- the catch assembly After the catch assembly has been installed, it automatically adjusts itself for misalignment of the socket and the strike. As has been indicated above, this may occur because of a faulty original installation or because of sagging or warping of the door or shelf,
- the socket will align itself with the head ;of the strike during the closing operation since the deformable material of which it is made flexes vertically or horizontally as required to effect the alignment.
- the strike since by advancing or retracting the position of the strike relative to the socket, the strike may be caused .to enter the socket to a greater or less extent as required to increase or decrease the holding eflectj
- This factor also 7 may be employed to advantage in adjusting the catch to compensate'for any wear which may occur, enlarging the bore of the socket.
Description
Oct. 16, 1956 R. A. JORGENSEN w2,767,005 FRICTION booR CATCH Filed April 15, 1-953- IN VEN TOR.
FRICTION DQGR CATCH Robert A. Jorgensen, Edmonds, Wash, assignor to Washington Steel Products, 1nd, Tacoma, Wash., a corporation of Washington Application April 13, 1953, Serial No. 348,417
2 Claims. (Cl. 292-40) This invention relates to friction door catches of the class used in conjunction with a door strike for holding a door in open or shut position. Although not limited to such applications, it is particularly designed for use in holding closed the doors of kitchen cabinets.
It is a primary object of this invention to provide a friction door catch which will hold a door securely and positively irrespective of the speed of motion of the door when it engages the catch.
It is another object of this invention to provide a friction door catch which automatically compensates for Wear of the holding member, thereby insuring a long service life.
It is another object of this invention to provide a friction door catch which automatically compensates for misalignment of the catch and the strike occurring because of faulty installation, or because of subsequent sagging or warping of the members to which the strike and catch are afixed.
It is another object of this invention to provide a friction door catch which is easily installed.
It is another object of this invention to provide a friction door catch which is silent in operation.
It is another object of this invention to provide a friction door catch, the tension of which is adjustable so that the door may be released from the catch with a predetermined force.
It is another object of this invention to provide a friction door catch which is inexpensive, of attractive appearance, and applicable for use with various types of doors.
The manner in which the foregoing and other objects of this invention are accomplished will be apparent from the following specification and claims considered together with the drawings wherein:
Figure 1 is a plan view of the presently described friction door catch in unengaged position illustrating the manner of mounting it with respect to a door and a door strike;
Figure 2 is a sectional view in side elevation of the catch illustrated in Figure 1; and
Figure 3 is a plan view, partly broken away, illustrating the door catch and strike members of Figure l in engaged position.
As is apparent from the drawing, the presently described friction door catch illustrated generally at is adapted to be used in conjunction with a strike indicated generally at 12. The catch and strike are mounted one on each of two relatively movable members. in the conventional installation it is preferred to mount the catch on a stationary member such as a shelf 14 of a kitchen cabinet and the strike on the movable element of the assembly, such as the door 16 of the cabinet.
The strike 12 may assume various configurations but preferably comprises a ball-headed screw having a threaded shank 18 and a round slotted head 20. This may conveniently be inserted in the door at a station opposite the catch member.
The catch 10 is provided with a base portion 22 which nited States Patent 2,767,005 iatented Oct. 16, 1956 is transversely perforated to accommodate a pair of screws 24, 26 by means of which the catch may be afiixed to the shelf 14. Connected to the base portion, and preferably formed integrally therewith, is the socket portion 28. For the present purposes this is formed from a hard material which is somewhat flexible or deformable at ordinary room temperatures. Although it may be fabricated from various sorts of materials fulfilling these requirements, I have discovered that the plastic material polyethylene has properties such as to be suited unique- 1y for the contemplated purpose.
Polyethylene is a solid substance which is extremely resistant to Wear and abrasion, but which is flexible or deformable at ordinary room temperatures. It is made by polymerizing ethylene in the presence of a suitable catalyst at a pressure of the order of 1000 pounds per square inch and a temperature of the order of 200 C. Under these conditions the ethylene forms a high molecular Weight, branched chain polymer having the general formula ('CH2 )1L- It has been described as a synthetic paraffin wax and resembles the latter material in being somewhat deformable and normally having a somewhat waxy surface. Also, it is substantially free from the rebound which characterizes a rubbery material. These properties are of primary importance in connection with the presently described application and make polyethylene almost ideally suited for the fabrication of the socket member of the friction door catch described herein.
As is further apparent from the drawing, the socket 2.8 is offset vertically from the base when the catch is in operative position. This forms a shoulder or step 30 and makes possible the automatic adjustment of the socket for vertical misalignment of the socket and the strike, which may occur because of faulty installation, or more usually, because of sagging of the door.
The outer end 32 of the opening in socket 28 is outwardly flared to provide a guiding section which guides the rounded head 20 of the strike within the catch even though the two members be misaligned.
The inner section 34 of the opening in the socket member has a slight inward taper. It comprises a holding section which frictionally engages the head of the strike and holds it within the socket. This action is facilitated and made positive by the deformability of the plastic material of which the socket section is made. Thus as the head of the strike enters the socket, it pushes the walls thereof outwardly as is particularly evident in Figure 3, although somewhat exaggerated in degree. The resulting tension then securely locks the strike within the socket until it is removed by force exerted against the door.
It is to be observed (Figure 3) that the length of the socket bore 34 is substantially greater than the radius of the striker head 20 and that the wall of the bore engages and grips the strike head over a surface which terminates closely adjacent the forward, slotted, end of said head. Thus, while the strike head remains gripped by the wall of the bore, said head may be moved to various depths within the bore, as by adjusting the length of extension of the strike member from the door 16. It will be apparent that correspondingly greater force is required to move the strike head deeper into the bore and also to retract it therefrom, because of the greater length of travel of the strike head in frictional contact with the bore wall. In addition, these force requirements are increased substantially when the bore is tapered in the manner illustrated. Accordingly, the force required to open and close the door 16 may be adjusted as desired by varying the depth to which the strike head penetrates the bore of the socket.
Because of the close fit between the strike and the socket, means are afforded for venting air to and from the socket behind the strike. To this end there is provided an opening 36, which relieves any vacuum or pressure which might otherwise be built up within the socket.
It thus facilitates movement of the strike and the 'smooth' operation of the catch.
Thus it will be apparent that the presently described friction catch has several important advantages. In the first place, it is easily installed. This is accomplished by fastening the catch 10 in the desired position on the shelf or other support member and then inserting the strike until the head is firmly seated against the rear wall of the socket. The door then is closed with some force 7 against the projecting spur of the strike. This makes a mark indicating the exact location on the door where the strike is to be fastened.
The installation is readily accomplished, furthermore, even though made on diverse types of cabinets. V For example, if the cabinet is fitted with a flush door, the catch member may be stationed on the shelf with its front face substantially flush with the front face of the shelf. However, if it is to be installed'on a lipped door, the front face of step 30 maybe placed substantially flush with the a front face of the shelf. This projects the socket forwardly of the shelf by an amount suflicient to compensate for the lip on the door, since during manufacture of the 4 V I toward the socket the head of the strike necessarily is forced further toward the rear of the socket opening, which is of restricteddiameter and accordingly tends increasingly to engage the head of the strike, All of the foregoing important operating advantages are achieved, furthermore, through the use .of .a catch which is simple and inexpensive in construction and of attractive design.
It is to'be understood that the form of my invention, herewith shown and described, isto be taken as a preferred example of the same, and that various changes in the shape, size and arrangement of'part's maybe resorted to, without departing from the spirit of my invention, or the scope of the subjoined claims.
Having thus described my invention, 1 claim:
1. A frictional door catch comprising a frictional socket member made of resiliently deformable plastic material and having a bore extending inwardly of the forward end thereof, air passageway means in the socket member adjacent and communicating with the rearward end of the bore, and a base integral with and extending rearwardlyof the socket member for securing the latter to a support,
, rearwardly of the socket member, the plane of the concatch the position of the step may readily be made to conform to the offset of the lip. j
Then after the catch assembly has been installed, it automatically adjusts itself for misalignment of the socket and the strike. As has been indicated above, this may occur because of a faulty original installation or because of sagging or warping of the door or shelf,
Correction of such misalignment is achieved first be cause the outwardly flared guiding section 32 will guide the head of the strike toward the interior of the socket even though the two members are notiexactly aligned.
Furthermore, the socket will align itself with the head ;of the strike during the closing operation since the deformable material of which it is made flexes vertically or horizontally as required to effect the alignment.
, Thus the strike is guided within the socket, its motion being facilitated by the somewhat waxy, self-lubricating I properties of the latter when it is made from polyethylene.
; Its entry also is facilitated bythe presence of the perfora' tion 36 which exhausts or admits air as required to relieve a pressure. pocket or a vacuum within the socket.
After the strike has entered the socket, it is" held U securely therein'by the holding tension exertedby the slightly bulging walls of the socket. The degree 'of tension is adjustable because of the inward taper of the socket,
since by advancing or retracting the position of the strike relative to the socket, the strike may be caused .to enter the socket to a greater or less extent as required to increase or decrease the holding eflectj This factor also 7 may be employed to advantage in adjusting the catch to compensate'for any wear which may occur, enlarging the bore of the socket. Thus by advancing the strike tact surface of the base being substantially parallel to the axis of the socket member, the portion of the socket memher which extends forwardly from the base being oifset from the plane of the contact surface of the base'to space said forwardly extending portion from said support whereby the forwardly extending portion of the socket member may deflect resiliently from normal position toward the support.
2. The frictional door catch of claim 1 wherein the resiliently deformableplastic material comprises polyethylene.
References Cited in the file of this patent UNITED STATES PATENTS 199,451 Knowlton Ian. 22, 1878 262,557 Barnard Aug. 15, 1,882 371,646 Vance Oct. 18, 1887 665,901 Hampton i Jan. 15, 1901 922,185 Peterman May 18, 1909 1,013,006 Fairchild Dec. 26, 1911 1,146,378 Williams 'July 13, 191-5 1,548,703 .Beeby Aug. 4, 1925' 2,011,215 Evulich' Aug.'13, 1935' 2,289,873 Claud-Mantle July'14, 1942 2,445,514 Clausen July 20, 1948 1 FOREIGN PATENTS V V 7 143,542 Australia Sept. 24,1951 624,235 Great Britain c May 31, 1949 OTHER REFERENCES 7 Modern Plastics Magazine, F ehruary 1948, pages 73-30.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US348417A US2767005A (en) | 1953-04-13 | 1953-04-13 | Friction door catch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US348417A US2767005A (en) | 1953-04-13 | 1953-04-13 | Friction door catch |
Publications (1)
Publication Number | Publication Date |
---|---|
US2767005A true US2767005A (en) | 1956-10-16 |
Family
ID=23367959
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US348417A Expired - Lifetime US2767005A (en) | 1953-04-13 | 1953-04-13 | Friction door catch |
Country Status (1)
Country | Link |
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US (1) | US2767005A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2803865A (en) * | 1956-04-09 | 1957-08-27 | Eljanian George | Joining separate molded sections of polyethylene |
US2804181A (en) * | 1954-04-06 | 1957-08-27 | Joseph E Haynes | Sliding sash with lubricated bearings |
US2861830A (en) * | 1953-05-04 | 1958-11-25 | Utility Trailer Mfg Company | Door locks adapted to mutually align doors and door frames and the like |
US2873989A (en) * | 1954-08-12 | 1959-02-17 | Nat Lock Co | Catch assembly |
US2885237A (en) * | 1954-11-08 | 1959-05-05 | Internat Res Corp | Door catch |
US3208780A (en) * | 1963-07-05 | 1965-09-28 | Bull Dog Lock Company | Latching means |
US3493255A (en) * | 1965-11-02 | 1970-02-03 | Charles E Shaw | Door movement restraint means |
US4402116A (en) * | 1980-06-09 | 1983-09-06 | Schenck Alexander W | Concealed interlocking fastener |
US10352082B1 (en) * | 2017-11-13 | 2019-07-16 | William Shuba, Jr. | Door stop |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US199451A (en) * | 1878-01-22 | Improvement in door stops and holders | ||
US262557A (en) * | 1882-08-15 | Door-check | ||
US371646A (en) * | 1887-10-18 | Door-check | ||
US665901A (en) * | 1900-04-24 | 1901-01-15 | Durward Bellmont Hampton | Door-stop. |
US922185A (en) * | 1908-07-22 | 1909-05-18 | John C Peterman | Door check and buffer. |
US1013006A (en) * | 1911-01-31 | 1911-12-26 | Orrin A Fairchild | Door stop and retainer. |
US1146378A (en) * | 1914-09-29 | 1915-07-13 | Herman Williams | Door check and holder. |
US1548703A (en) * | 1923-11-26 | 1925-08-04 | Beeby James | Check device |
US2011215A (en) * | 1933-12-27 | 1935-08-13 | Evulich Anton | Doorstop |
US2289873A (en) * | 1940-08-01 | 1942-07-14 | Bassick Co | Door holder or like article |
US2445514A (en) * | 1946-02-16 | 1948-07-20 | Henry P Clausen | Door holder and stop |
GB624235A (en) * | 1947-06-18 | 1949-05-31 | Ernest Kenneth Macdonald | Door retainer |
-
1953
- 1953-04-13 US US348417A patent/US2767005A/en not_active Expired - Lifetime
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US199451A (en) * | 1878-01-22 | Improvement in door stops and holders | ||
US262557A (en) * | 1882-08-15 | Door-check | ||
US371646A (en) * | 1887-10-18 | Door-check | ||
US665901A (en) * | 1900-04-24 | 1901-01-15 | Durward Bellmont Hampton | Door-stop. |
US922185A (en) * | 1908-07-22 | 1909-05-18 | John C Peterman | Door check and buffer. |
US1013006A (en) * | 1911-01-31 | 1911-12-26 | Orrin A Fairchild | Door stop and retainer. |
US1146378A (en) * | 1914-09-29 | 1915-07-13 | Herman Williams | Door check and holder. |
US1548703A (en) * | 1923-11-26 | 1925-08-04 | Beeby James | Check device |
US2011215A (en) * | 1933-12-27 | 1935-08-13 | Evulich Anton | Doorstop |
US2289873A (en) * | 1940-08-01 | 1942-07-14 | Bassick Co | Door holder or like article |
US2445514A (en) * | 1946-02-16 | 1948-07-20 | Henry P Clausen | Door holder and stop |
GB624235A (en) * | 1947-06-18 | 1949-05-31 | Ernest Kenneth Macdonald | Door retainer |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2861830A (en) * | 1953-05-04 | 1958-11-25 | Utility Trailer Mfg Company | Door locks adapted to mutually align doors and door frames and the like |
US2804181A (en) * | 1954-04-06 | 1957-08-27 | Joseph E Haynes | Sliding sash with lubricated bearings |
US2873989A (en) * | 1954-08-12 | 1959-02-17 | Nat Lock Co | Catch assembly |
US2885237A (en) * | 1954-11-08 | 1959-05-05 | Internat Res Corp | Door catch |
US2803865A (en) * | 1956-04-09 | 1957-08-27 | Eljanian George | Joining separate molded sections of polyethylene |
US3208780A (en) * | 1963-07-05 | 1965-09-28 | Bull Dog Lock Company | Latching means |
US3493255A (en) * | 1965-11-02 | 1970-02-03 | Charles E Shaw | Door movement restraint means |
US4402116A (en) * | 1980-06-09 | 1983-09-06 | Schenck Alexander W | Concealed interlocking fastener |
US10352082B1 (en) * | 2017-11-13 | 2019-07-16 | William Shuba, Jr. | Door stop |
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