US3851360A - Buckle for safety belts - Google Patents

Buckle for safety belts Download PDF

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Publication number
US3851360A
US3851360A US22285872A US3851360A US 3851360 A US3851360 A US 3851360A US 22285872 A US22285872 A US 22285872A US 3851360 A US3851360 A US 3851360A
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US
United States
Prior art keywords
buckle
tongue
locking
latch
push button
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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Inventor
H Minolla
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Klippan GmbH
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Klippan GmbH
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Filing date
Publication date
Priority to DE19712109460 priority Critical patent/DE2109460B2/de
Application filed by Klippan GmbH filed Critical Klippan GmbH
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Publication of US3851360A publication Critical patent/US3851360A/en
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    • AHUMAN NECESSITIES
    • A44HABERDASHERY; JEWELLERY
    • A44BBUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B11/00Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts
    • A44B11/25Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts with two or more separable parts
    • A44B11/2503Safety buckles
    • A44B11/2507Safety buckles actuated by a push-button
    • A44B11/2523Safety buckles actuated by a push-button acting parallel to the main plane of the buckle and in the same direction as the fastening action
    • AHUMAN NECESSITIES
    • A44HABERDASHERY; JEWELLERY
    • A44BBUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B11/00Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts
    • A44B11/25Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts with two or more separable parts
    • A44B11/2503Safety buckles
    • A44B11/2507Safety buckles actuated by a push-button
    • A44B11/2511Safety buckles actuated by a push-button acting perpendicularly to the main plane of the buckle, e.g. placed on the front face of the buckle
    • AHUMAN NECESSITIES
    • A44HABERDASHERY; JEWELLERY
    • A44BBUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B11/00Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts
    • A44B11/25Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts with two or more separable parts
    • A44B11/2503Safety buckles
    • A44B11/2507Safety buckles actuated by a push-button
    • A44B11/2515Safety buckles actuated by a push-button acting parallel to the main plane of the buckle and perpendicularly to the direction of the fastening action
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00Buckles, buttons, clasps, etc.
    • Y10T24/45Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock]
    • Y10T24/45225Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock] including member having distinct formations and mating member selectively interlocking therewith
    • Y10T24/45602Receiving member includes either movable connection between interlocking components or variable configuration cavity
    • Y10T24/45623Receiving member includes either movable connection between interlocking components or variable configuration cavity and operator therefor
    • Y10T24/45639Receiving member includes either movable connection between interlocking components or variable configuration cavity and operator therefor including pivotally connected element on receiving member
    • Y10T24/45654Receiving member includes either movable connection between interlocking components or variable configuration cavity and operator therefor including pivotally connected element on receiving member for shifting slidably connected and guided, nonself-biasing interlocking component
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00Buckles, buttons, clasps, etc.
    • Y10T24/45Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock]
    • Y10T24/45225Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock] including member having distinct formations and mating member selectively interlocking therewith
    • Y10T24/45602Receiving member includes either movable connection between interlocking components or variable configuration cavity
    • Y10T24/45723Receiving member includes either movable connection between interlocking components or variable configuration cavity having slidably connected, nonself-biasing interlocking component
    • Y10T24/45743Requiring manual force thereon to interlock or disengage

Abstract

A safety belt buckle including a pair of mutually spaced lockplates, a push button the outer surface of which extends flush with a narrow side of the buckle housing, a latch member slidably received between the lock plates, coupled to the push button and adapted to lock or to release a safety belt connector inserted into the buckle, and a spring for biasing a connector end portion and the latch member.

Description

llited States 1, ingflla Dec. 3, [5 BUCKLE FOR SAFETY BELTS 3,126,227 3/1964 Bollinger 24 230 AN 3,201,840 8/1965 Jantzen 24/230 AN [75] Inventor: 01st Mmolla, Heldestleg, Germany 3,252,196 5/1966 R165 24/230 AN 73 Assignee: Klippan GmbH, Kohfurth, Germany 3,514,821 6/1970 Saymark .1 24/230 AV 3,611,513 10/1971 Hoober 24/211 K [22] 1972 FOREIGN PATENTS OR APPLICATIONS 1 MM -z 222,858 1,690 6/1866 Great Britain 24/230 AN [30] Foreign Application Priority Data Primary Examinep'aemard Gelak Feb 27 197] German 2109460 Attorney, Agent, or F1rmJonathan Plaut; John P.

. y y, Jr-

[52] US. Cl. 24/230 AL 24/211 K 51 161. c1 A1146 11/26 [57] AlfsTkAFT 5 Field f searchw 24/230 AW, 230 AL, 211 K, A safety belt buckle mcludlng a pair of mutually 24/230 5L spaced lockplates, a push button the outer surface of which extends flush with a narrow side of the buckle [56] References Cited housing, a latch member slidably received between the UNITED STATES PATENTS lock plates, coupled to the push button and adapted to lock or to release a safety belt connector inserted into fizi zgg E the buckle, and a spring for biasing a connector end 2,0981461 11/1937 1141661166 11111111111124 230 SL porno and the latch member 2,629,l56 2/1953 Kamens 24/211 K 2 Claims, 3 Drawing Figures PATENTELBEB' 3W4 3.851 360 SHEH 30$ 3 BUCKLE FOR SAFETY BELTS BACKGROUND OF THE INVENTION The present invention relates to a buckle for a safety belt, particularly for a motor vehicle safety belt which buckle includes a shallow housing enclosinga locking mechanismoperated by a push button and adapted to receive a plate-shaped slide-in tongue connected to the safety belt wherein the slide-in tongue is provided with an indentation in either of its mutually opposing lateral edges.

There are already known safety belt buckles provided with a push button for unlocking the buckle wherein the push button is arranged on the upper surface of the housing or on the shallow surface thereof respectively. In these prior art buckles, when unlocking the buckle the push button movement perpendicular to the plane of the housing must be translated into a movement which is perpendicular to the original movement and occurs in the plane of the housing, by auxiliary means such as levers or the like, when thelatch member is adapted to be brought by a sideways movement into engagement with an indentation in the narrow side of the slide-in tongue. Because of these auxiliary means the buckle, i.e., the buckle housing is relatively thick, i.e., of a relatively large height. Furthermore, because of the larger number of components required such prior art buckles are expensive to manufacture and to assemble and are additionally susceptible to trouble. Asa remedy, it has been proposed to provide buckles of this type with one lock plate only. This, however, entails a relatively high loading of the components which are mounted on this lock plate, especially in-the bearing areas thereof when the user of the buckle is involved in'an accident. This high loading results in the risk of breakage of components. For this reason it is more advantageous to provide buckles having a pair of lock plates between which the slide-in tongue may be inserted, because in such arrangements the various components that are mounted in the pair of lock plates will be subject to only half of the total load at either side.

Another drawback of prior art safety belt buckles is that a push button for unlocking the buckle arranged on one of the shallow surfaces of the buckle increases the risk of inadvertently releasing the buckle when the shallow surface of the buckle at which the push button is mounted faces the body of the passenger and the passenger moves towards the buckle.

In other types of prior art buckles the push button must be operated to allow insertion of the slide-in tongue. Buckles of this type do not allow an advanta- SUMMARY OF THE INVENTION For achieving the above stated objects the invention proposes a buckle having a pair of similar mutually spaced lock plates each of which provided with a guide groove extending perpendicularlylto the slide-in direction of the slide-in tongue, and further a latch member slidably received in these grooves-the latch member biased by a spring and coupled directly to a push button adapted to move the slide-in tongue into an unlocked position when pressed down perpendicularly to the slide-in direction of the slide-in tongue in a direction parallel to an upper surface of the housing.

A buckle of this type may be more easily and safely manipulated and may be designed in a very shallow configuration by using a minimum number of components. The force required for unlocking the buckle may be reduced still further when the sliding surface of the indentations in the slide-in tongue and the sliding surface'of the latch member which surfaces are in the locking position in mutual engagement are obliquely inclined downwardly wherein the sliding surfaces preferably are at an inclination of about 7 with respect to a horizontal line (when the longitudinal center line of the buckle is coextensive with the vertical). Such an angle of inclination allows to substantially reduce the friction forces between latch member and slide-in tongue which must be overcome when unlocking the buckle. This magnitude of inclination of the sliding surfaces on the other hand assures that no inadvertent release of the buckle may occur even under an extremely high loading. The simplicity of the buckle design may be further enhanced by using in the buckle only a single helical spring having two free legs one of which engages the lower edge of the slide-in tongue and the other of which engages the latch member. A spring of this type may perform three functions, i.e., to automatically eject the slide-in tongue when depressing the push button, to secure the latch member in the locking position and to reset the push button after the buckle has been opened. The push button is provided with a head portion and preferably received with this head portion in mating recesses of the pair of lock plates so'that the upper surface of the push button is flush with the housing surface. By this arrangement any inadvertent opening of the buckle will be safely avoided.

Although in the buckle of the present invention the slide-in tongue is retained by a single latch member disposed on one side of the tongue it will be advantageous if the slide-in tongue is made symmetrical with respect to a longitudinal center line of the tongue thus allowing to introduce the tongue into the buckle with either the upper or the lower surface of the tongue facing upwardly or respectively downwardly.

DESCRIPTION OF THE DRAWINGS In the following, a preferred embodiment of the invention will be described in detail with reference to the appended drawing wherein FIG. 1 is a longitudinal section view of the safety belt buckle with the slide-in tongue inserted therein, according to the present invention, and

FIG. 2 is a lateral sectional view of the safety belt buckle of FIG. I.

FIG. 3 is a longitudinal sectional view of the safety belt buckle with the slide-in-tongue being disengaged.

The safety belt buckle shown in the drawing includes a pair of similar lock plates 1 and 2. These two lock plates are held in a mutual spaced relationship parallel to each other by means of connecting lugs 3 and a sleeve 4. On their outer surfaces the lock plates 1 and 2 are enclosed by a housing 5 made of a plastic material. This housing 5 is provided at its upper edge portion with an opening 6 for inserting a slide-in tongue 7. In the region of this opening 6 the two lock plates 1 and 2 are bent outwardly in the form of a hopper as may be seen in FIG. 2, in order to facilitate the insertion of the slide-in tongue and to guide the same.

The slide-in tongue 7 is rigidly connected at a mounting 8 with a safety belt not shown in the drawing, and is furthermore tapered towards its lower end and symmetrical with respect to the longitudinal center line 9. The two outwardly facing edge portions of the slide-in tongue 7 are each provided with a recess 10in the form of an indentation The lower edges of these indentations are obliquely inclined with respect to a horizontal line and enclose therewith an angle a of 7 30.

Each of the pair of lock plates 1 and 2 is provided with a guide groove 12 extending perpendicularly to the longitudinal center line 9. These grooves 12 serve to slidably and reciprocally guide a latch member 13.

A pair of webs l4 and 15 provided at the lower end of a push button 16 are rigidly connected to the latch member 13. The push button 16 has a head portion which is received in mating recesses 17 of the two lock plates 1 and 2 so that the head portion of the push button does not project beyond the outer surface of the casing 5.

A spring 18 engages with the end of its free leg 19 the outer surface of the latch member 13 and biases the latch member towards the longitudinal center line 9. The second leg 20 of the helical spring 18 is provided with an offset or bent portion guided in a groove 21 and engages the lower edge of the slide-in tongue 7. The

buckle furthermore includes a spacer 22 made of a plastic material which is inserted between the pair of lock plates 1 and 2 and an abutment or opposed support member 23 for the slide-in tongue 7.

To open the buckle, the push button 16 will be pressed into the housing 5 in the direction shown by the arrow 24. During this movement the webs l4 and 15 of the push button 16 entrain the latch member 13 against the opposing force exerted by the leg 19 of the spring 18. Since thelatch member 13 is likewise provided at its lower edge with an inclined sliding surface similar to the lower edge of an indentation 10 a relatively low pressure force will be sufficient to open the safety belt buckle. As soon as the latch member 13 has been completely disengaged from the indentation 10 the pressure appliedby the leg 20 of the spring 18 against the lower surface of the slide-in tongue 7 results in the ejection of the slide-in tongue 7 in an upward vertical direction. Toward this end, the spring 18 includes two helical coils and is arranged such that when ejecting the slidein tongue 7 the one coil 25 moves upwardly together with the tongue while the second coil 26 of the spring 18 abuts against a support surface of the spacer 22.

When using the buckle it will be merely necessary to insert the slide-in tongue 7 into the opening 6 and to urge the tongue 7 downwardly against the force of the spring 18. Since the lower corners of the tongue are curved the latch member 13 will be moved outwardly by this movement against the force of the spring 18 and finally engages into an indentation 10 under the force of the spring 18 so that the head portion of the push button 16 automatically returns into the position shown in FIG. 1.

Having described the invention, the embodiments thereof in which an exclusive property or right is claimed are defined as follows:

1. A buckle for a safety belt, the buckle comprising a housing enclosing a locking mechanism, a push button mounted in said housing and disengaging said locking mechanism, said housing receiving a flat tongue engaged by said locking mechanism and connected to the safety belt when directed into the buckle, said tongue provided with at least one indentation therein, said locking mechanism comprising a pair of lock plates, each provided with a guide groove extending perpendicularly to the direction of entry of the tongue in the buckle, said tongue moving in said buckle between said lock plates, and further comprising a latch member for reception in said indentation for engaging said tongue in said buckle slidably received in said grooves, the latch member biased in the locking position by a spring mounted in the buckle and coupled directly to the push button for movement on depression of said button perpendicularly to the movement of said tongue in said buckle, said buckle further comprising a pair of webs rigidly connecting said latch member to said push button, each web of said pair of webs being arranged parallel to said lock plates and on the outside of one of said pair of lock plates.

2. A buckle for a safety belt, the buckle comprising a housing enclosing a locking mechanism, a push button mounted in said housing and disengaging said locking mechanism, said housing receiving a flat tongue engaged by said locking mechanism and connected to the safety belt when directed into the buckle, said tongue provided with at least one indentation therein, said locking mechanism comprising a pair of lock plates, each provided with a guide groove extending perpendicularly to the direction of entry of the tongue in the buckle, said tongue moving in said buckle between said lock plates, and further comprising a latch member for reception in said indentation for engaging said tongue in said buckle slidably received in said grooves, the latch member biased in the locking position by a spring mounted in the buckle and coupled directly to the push button for movement on depression of said button perpendicularly to the movement of said tongue in said buckle, said spring having two integral free legs, one of which engages the lower edge of said tongue and the other of which engages said latch member.

Claims (2)

1. A buckle for a safety belt, the buckle comprising a housing enclosing a locking mechanism, a push button mounted in said housing and disengaging said locking mechanism, said housing receiving a flat tongue engaged by said locking mechanism and connected to the safety belt when directed into the buckle, said tongue provided with at least one indentation therein, said locking mechanism comprising a pair of lock plates, each provided with a guide groove extending perpendicularly to the direction of entry of the tongue in the buckle, said tongue moving in said buckle between saiD lock plates, and further comprising a latch member for reception in said indentation for engaging said tongue in said buckle slidably received in said grooves, the latch member biased in the locking position by a spring mounted in the buckle and coupled directly to the push button for movement on depression of said button perpendicularly to the movement of said tongue in said buckle, said buckle further comprising a pair of webs rigidly connecting said latch member to said push button, each web of said pair of webs being arranged parallel to said lock plates and on the outside of one of said pair of lock plates.
2. A buckle for a safety belt, the buckle comprising a housing enclosing a locking mechanism, a push button mounted in said housing and disengaging said locking mechanism, said housing receiving a flat tongue engaged by said locking mechanism and connected to the safety belt when directed into the buckle, said tongue provided with at least one indentation therein, said locking mechanism comprising a pair of lock plates, each provided with a guide groove extending perpendicularly to the direction of entry of the tongue in the buckle, said tongue moving in said buckle between said lock plates, and further comprising a latch member for reception in said indentation for engaging said tongue in said buckle slidably received in said grooves, the latch member biased in the locking position by a spring mounted in the buckle and coupled directly to the push button for movement on depression of said button perpendicularly to the movement of said tongue in said buckle, said spring having two integral free legs, one of which engages the lower edge of said tongue and the other of which engages said latch member.
US22285872 1971-02-27 1972-02-02 Buckle for safety belts Expired - Lifetime US3851360A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19712109460 DE2109460B2 (en) 1971-02-27 1971-02-27

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US22285872 Expired - Lifetime US3851360A (en) 1971-02-27 1972-02-02 Buckle for safety belts

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US (1) US3851360A (en)
BE (1) BE779537A (en)
CA (1) CA961242A (en)
CH (1) CH533433A (en)
DE (1) DE2109460B2 (en)
ES (1) ES178215Y (en)
GB (1) GB1354048A (en)
IT (1) IT948717B (en)
NL (1) NL7202000A (en)
SE (1) SE388779B (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4033015A (en) * 1973-11-15 1977-07-05 Klippan Gmbh Hamburg Lock for a safety belt
DE2619720A1 (en) * 1976-05-04 1977-11-17 Repa Feinstanzwerk Gmbh Seat belt lock with extended arm spiral spring - with one end acting on catch and other on ejector lever and with notched tongue fitting
US4060879A (en) * 1975-08-19 1977-12-06 Takata Kojyo Co., Ltd Seat belt buckle
US4208771A (en) * 1978-01-19 1980-06-24 Repa Feinstanzwerk Gmbh Lock for safety belts in motor vehicles
US4374449A (en) * 1980-09-25 1983-02-22 Allied Corporation Mini seat belt buckle
US4625371A (en) * 1984-11-22 1986-12-02 Nsk-Warner K.K. Seat belt buckle
US20030071453A1 (en) * 2001-10-16 2003-04-17 Trw Occupant Restraint Systems Gmbh & Co. Kg Tensioner-proof closure for a safety belt
US20100237112A1 (en) * 2009-03-20 2010-09-23 Bp Children's Products Hk Co., Limited Harness Fastener System for Child Carrier Device
US20130298359A1 (en) * 2012-05-09 2013-11-14 Doggyman H. A. Co., Ltd. Buckle

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1589993A (en) * 1976-06-30 1981-05-28 Nsk Warner Kk Seat belt buckle
DE2801593C2 (en) * 1978-01-14 1987-09-03 Autoflug Gmbh, 2084 Rellingen, De
DE3014443A1 (en) * 1980-04-15 1981-10-22 Autoflug Gmbh Easily released safety belt lock - has abutment point for lock member outside force action line whilst maintaining safety obtuse angle between components
DE3016327A1 (en) * 1980-04-28 1981-10-29 Stahl Gurt Bandweberei Lockable fastener for safety belts - has locking element pivoting perpendicularly to sliding bolt which engages in opening in fastener casing

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US809883A (en) * 1905-08-01 1906-01-09 Ezekiel Zeckhauser Button.
US966544A (en) * 1909-07-01 1910-08-09 Ross Heaton Mfg Co Inc Fastener.
US2098461A (en) * 1935-05-09 1937-11-09 Micallef Arthur Catch for use in detachably securing the ends of bracelets, chains, and other articles together
US2629156A (en) * 1950-07-06 1953-02-24 Kamens Irving Catch for necklaces
US3126227A (en) * 1964-03-24 bollinger
US3201840A (en) * 1963-05-20 1965-08-24 Steinthal & Co Inc M Safety belt devices
US3252196A (en) * 1964-12-04 1966-05-24 Frank R Ries Belt buckle
US3514821A (en) * 1969-02-04 1970-06-02 Ind Fjadrar Ab Buckles for safety belts
US3611513A (en) * 1969-11-12 1971-10-12 Daniel Hoober Jewelry clasp

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126227A (en) * 1964-03-24 bollinger
US809883A (en) * 1905-08-01 1906-01-09 Ezekiel Zeckhauser Button.
US966544A (en) * 1909-07-01 1910-08-09 Ross Heaton Mfg Co Inc Fastener.
US2098461A (en) * 1935-05-09 1937-11-09 Micallef Arthur Catch for use in detachably securing the ends of bracelets, chains, and other articles together
US2629156A (en) * 1950-07-06 1953-02-24 Kamens Irving Catch for necklaces
US3201840A (en) * 1963-05-20 1965-08-24 Steinthal & Co Inc M Safety belt devices
US3252196A (en) * 1964-12-04 1966-05-24 Frank R Ries Belt buckle
US3514821A (en) * 1969-02-04 1970-06-02 Ind Fjadrar Ab Buckles for safety belts
US3611513A (en) * 1969-11-12 1971-10-12 Daniel Hoober Jewelry clasp

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4033015A (en) * 1973-11-15 1977-07-05 Klippan Gmbh Hamburg Lock for a safety belt
US4060879A (en) * 1975-08-19 1977-12-06 Takata Kojyo Co., Ltd Seat belt buckle
DE2619720A1 (en) * 1976-05-04 1977-11-17 Repa Feinstanzwerk Gmbh Seat belt lock with extended arm spiral spring - with one end acting on catch and other on ejector lever and with notched tongue fitting
US4208771A (en) * 1978-01-19 1980-06-24 Repa Feinstanzwerk Gmbh Lock for safety belts in motor vehicles
US4374449A (en) * 1980-09-25 1983-02-22 Allied Corporation Mini seat belt buckle
US4625371A (en) * 1984-11-22 1986-12-02 Nsk-Warner K.K. Seat belt buckle
US20030071453A1 (en) * 2001-10-16 2003-04-17 Trw Occupant Restraint Systems Gmbh & Co. Kg Tensioner-proof closure for a safety belt
US20100237112A1 (en) * 2009-03-20 2010-09-23 Bp Children's Products Hk Co., Limited Harness Fastener System for Child Carrier Device
US8256073B2 (en) * 2009-03-20 2012-09-04 Bp Children's Products Hk Co., Limited Harness fastener system for child carrier device
US20130298359A1 (en) * 2012-05-09 2013-11-14 Doggyman H. A. Co., Ltd. Buckle
US8819960B2 (en) * 2012-05-09 2014-09-02 Doggyman H. A. Co., Ltd. Buckle

Also Published As

Publication number Publication date
NL7202000A (en) 1972-08-29
CA961242A (en) 1975-01-21
GB1354048A (en) 1974-06-05
ES178215U (en) 1972-10-16
CA961242A1 (en)
ES178215Y (en) 1973-05-01
DE2109460A1 (en) 1972-09-07
IT948717B (en) 1973-06-11
SE388779B (en) 1976-10-18
BE779537A1 (en)
CH533433A (en) 1973-02-15
BE779537A (en) 1972-06-16
DE2109460B2 (en) 1975-10-16

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