US4306373A
Expired / Lapsed
US
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Interconnecting toy block arrangement
Assignee: Kawada Co Ltd
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Filing: 1979-08-07
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Granted: 1981-12-22
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Expires: 1999-08-07
Abstract
Abstract An improved frictional interconnecting toy block arrangement having a hollow body means fabricated of a semi-flexible material such as a blowmolded plastic. The interconnecting of the toy blocks with each other is achieved by female coupler means and male couplers. The male couplers are part of the body means and unitarily fabricated of blowmolded plastic during the fabrication of the body means. The female coupler means are fabricated of a more rigid plastic such as an injection molded plastic which can be fabricated to close tolerances. The female coupler means fits and is retained within apertures molded into the walls of the body means. Relief means, such as slots, are provided in the female coupler means to allow for dimensional variations of the male couplers that are inherent in the blowmolding process and still provide interlocking with the male couplers. In addition, the relief means and flexible nature of the male coupler allow the blocks to be easily interconnected with each other and removed from each other by young children whose strength and/or manual dexterity have not yet fully developed.
Inventors
- 👤 Yasushi Chatani
- 👤 Toshio Tsuchikura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:40
CPC Classifications
A; A63; A63H; A63H33/00; A63H33/04; A63H33/06; A63H33/08; A63H33/088
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
414 words
An improved interconnecting toy block arrangement comprising in combination: a semi-flexible body means having a first predetermined flexibility and having a plurality of wall members unitarily fabricated defining a body cavity; a first wall of said plurality of wall members having first internal walls defining a first aperture therethrough, and a second wall of said plurality of wall members having second internal walls defining a second aperture therethrough aligned with said first aperture. a semi rigid first female coupler means discrete from said semi-rigid body means having a second predetermined flexibility less than said first predetermined flexibility and comprising a first female coupler member and a second female coupler member and each of said first and second female coupler members having: an outer end; an inner end spaced a first predetermined distance from said outer end and positionable within said body cavity; internal wall surfaces defining a male coupler receiving aperture extending from said outer end toward said inner end thereof; external wall surfaces; a collar on said outer end having an inner edge at said internal wall surfaces and an outer edge spaced from said external wall surfaces; a plurality of internal ridges on said internal wall surfaces extending from said outer end toward said inner end and a plurality of external ridges on said external wall surfaces extending from said outer end toward said inner end; relief means in regions adjacent said outer end for contributing to the flexibility of said female coupler member adjacent said outer end thereof having walls defining a plurality of slots extending from said internal wall surfaces to said external wall surfaces and extending into said collar from said inner edge toward said outer edge; and said inner end having an interlocking means comprising one of an insertion portion and walls defining an insertion portion receiving aperture; said inner end of said first female coupler member having said insertion portion and said inner end of said second female coupler member having said walls defining said insertion portion receiving aperture, and said insertion portion of said first female coupler member positioned within said insertion portion receiving aperture of said second female coupler member for interlocking said first female coupler member to said second female coupler member; and retention means for retaining said collar of said first female coupler member at said first wall of said plurality of wall members and said collar of said second female coupler member at said second wall of said plurality of wall members.
Claim 2
Dependent Claim
414 words
An improved interconnecting toy block arrangement comprising in combination: a semi-flexible body means having a first predetermined flexibility and having a plurality of wall members unitarily fabricated defining a body cavity; a first wall of said plurality of wall members having first internal walls defining a first aperture therethrough, and a second wall of said plurality of wall members having second internal walls defining a second aperture therethrough aligned with said first aperture. a semi rigid first female coupler means discrete from said semi-rigid body means having a second predetermined flexibility less than said first predetermined flexibility and comprising a first female coupler member and a second female coupler member and each of said first and second female coupler members having: an outer end; an inner end spaced a first predetermined distance from said outer end and positionable within said body cavity; internal wall surfaces defining a male coupler receiving aperture extending from said outer end toward said inner end thereof; external wall surfaces; a collar on said outer end having an inner edge at said internal wall surfaces and an outer edge spaced from said external wall surfaces; a plurality of internal ridges on said internal wall surfaces extending from said outer end toward said inner end and a plurality of external ridges on said external wall surfaces extending from said outer end toward said inner end; relief means in regions adjacent said outer end for contributing to the flexibility of said female coupler member adjacent said outer end thereof having walls defining a plurality of slots extending from said internal wall surfaces to said external wall surfaces and extending into said collar from said inner edge toward said outer edge; and said inner end having an interlocking means comprising one of an insertion portion and walls defining an insertion portion receiving aperture; said inner end of said first female coupler member having said insertion portion and said inner end of said second female coupler member having said walls defining said insertion portion receiving aperture, and said insertion portion of said first female coupler member positioned within said insertion portion receiving aperture of said second female coupler member for interlocking said first female coupler member to said second female coupler member; and retention means for retaining said collar of said first female coupler member at said first wall of said plurality of wall members and said collar of said second female coupler member at said second wall of said plurality of wall members.
Claim 3
Dependent Claim
32 words
The arrangement defined in claim 1 wherein said insertion portion of said first female coupler member is frictionally retainable in said insertion portion receiving aperture of said second said female coupler member.
Claim 4
Dependent Claim
88 words
The arrangement defined in claim 1, wherein said insertion portion further comprises a first peripheral shoulder and a first peripheral groove on said external wall surfaces of said first female coupler member, and said insertion portion receiving aperture further comprises a second peripheral shoulder and a second peripheral groove on said internal wall surfaces of said second female coupler member, and said first peripheral shoulder is positionable in said second peripheral groove and said second peripheral shoulder is positionable in said first peripheral groove for interlocking retention therebetween.
Claim 5
Dependent Claim
30 words
The arrangement defined in claim 1 wherein said insertion portion of said first female coupler member is bondable to said insertion portion receiving aperture of said second female coupler member.
Claim 6
Dependent Claim
24 words
The arrangement defined in claim 1 wherein said interlocking means on said inner ends is a welding of said inner ends to each other.
Claim 7
Dependent Claim
44 words
The arrangement defined in claim 1 wherein said first and second walls of said body means each have a collar accepting indentation to provide each of said collars substantially flush with said outer surfaces of said first and second walls of said body means.
Claim 8
Dependent Claim
47 words
The arrangement defined in claim 1 wherein said retention means further comprises a sleeve on each of said first and second walls of said body means at said first and second apertures extending into said body cavity for frictionally engaging said first and second female coupler members.
Claim 9
Dependent Claim
21 words
The arrangement defined in claim 7 wherein said plurality of external ridges on said external wall surfaces frictionally engage said sleeve.
Claim 10
Dependent Claim
92 words
The arrangement defined in claim 1 and further comprising: a collar accepting indentation on each of said first and second walls of said body means to provide each of said collars substantially flush with said outer surfaces of said first and second walls of said body means; a sleeve on each of said first and second walls of said body means at said first and second apertures extending into said body cavity for frictionally engaging said first and second female coupller members; and said plurality of external ridges frictionally engage said sleeve.
Claim 11
Dependent Claim
21 words
The arrangement defined in claim 1 wherein said internal wall surfaces defining said male coupler receiving aperture have an arcuate configuration.
Claim 12
Dependent Claim
12 words
The arrangement defined in claim 10 wherein said arcuate configuration is cylindrical.
Claim 13
Dependent Claim
23 words
The arrangement defined in claim 1 wherein said internal wall surfaces defining said male coupler receiving aperture have a polygonal cross sectional geometry.
Claim 14
Dependent Claim
15 words
The arrangement defined in claim 12 wherein said polygonal cross sectional geometry is a square.
Claim 15
Dependent Claim
32 words
The arrangement defined in claim 1 wherein each of said first and second female coupler members further comprises said slots extending through said collar from said inner edge to said outer edge.
Claim 16
Dependent Claim
38 words
The arrangement defined in claim 1 and further comprising a third wall of said plurality of wall members having a first male coupler extending outwardly therefrom for detachable coupling with a female coupler means of another toy block.
Claim 17
Dependent Claim
30 words
The arrangement defined in claim 15 and further comprising a fourth wall of said plurality of wall members having a second male coupler substantially identical to said first male coupler.
Claim 18
Dependent Claim
19 words
The arrangement defined in claim 16 wherein said first and second male couplers are in alignment with each other.
Claim 19
Dependent Claim
18 words
The arrangement defined in claim 17 wherein said first and second male couplers are perpendicular to each other.
Claim 20
Dependent Claim
137 words
The arrangement defined in claim 17 and further comprising a third male coupler substantially identical to said first male coupler on said third wall, a fourth male coupler substantially identical to said first male coupler on said fourth wall, said third male coupler and said fourth male coupler in alignment with each other, and third internal walls defining a third aperture in said first wall, fourth internal walls defining a fourth aperture in said second wall, and said third aperture and said fourth aperture in alignment with each other, and a second female coupler means substantially identical to said first female coupler means comprising a third female coupler member and a fourth female coupler member and said third female coupler member positioned in said third aperture and said fourth female coupler member positioned in said fourth aperture.
Claim 21
Dependent Claim
21 words
The arrangement defined in claim 1 wherein each of said plurality of wall members of said body means is substantially planar.
Claim 22
Dependent Claim
25 words
The arrangement defined in claim 15 wherein said second wall is curved and each of the other of said plurality of wall members is planar.
Claim 23
Dependent Claim
26 words
The arrangement defined in claim 15 wherein said plurality of wall members comprises five wall members and each of said plurality of wall members is planar.
Claim 24
Dependent Claim
16 words
The arrangement defined in claim 1 wherein said body means is fabricated of blow molded plastic.
Claim 25
Dependent Claim
17 words
The arrangement defined in claim 23 wherein said female coupler means is fabricated of injection molded plastic.
Claim 26
Dependent Claim
102 words
The arrangement defined in claim 3 and further comprising: said retention means having: a collar accepting indentation on each of said first and second walls of said body means to provide each of said collars substantially flush with said outer surfaces of said first and second walls of said body means; and a sleeve on each of said first and second walls on said body means at said first and second apertures extending into said body cavity for frictionally engaging said first and second female coupler members; and said internal wall surfaces defining said male coupler receiving aperture have a cylindrical configuration.
Claim 27
Dependent Claim
274 words
A first female coupler means comprising, in combination: a first female coupler member; a second female coupler member; each of said first and second female coupler members having: an outer end; an inner end spaced a first predetermined distance from said outer end; internal wall surfaces defining a male coupler receiving aperture extending from said outer end toward said inner end thereof; external wall surfaces; a collar on said outer end having an inner edge at said internal wall surfaces and an outer edge spaced from said external wall surfaces; a plurality of internal ridges on said internal wall surfaces extending from said outer end toward said inner end and a plurality of external ridges on said external wall surfaces extending from said outer end toward said inner end; relief means in regions adjacent said outer end for contributing to the flexibility of said female coupler member adjacent said outer end thereof having walls defining a plurality of slots extending from said internal wall surfaces to said external wall surfaces and extending into said collar from said inner edge toward said outer edge; and said inner end having an interlocking means comprising one of an insertion portion and walls defining an insertion portion receiving aperture; and said inner end of said first female coupler member having said insertion portion and said inner end of said second female coupler member having said walls defining said insertion portion receiving aperture, and said insertion portion of said first female coupler member positioned within said insertion portion receiving aperture of said second female coupler member for interlocking said first female coupler member to said second female coupler member.
Claim 28
Dependent Claim
274 words
A first female coupler means comprising, in combination: a first female coupler member; a second female coupler member; each of said first and second female coupler members having: an outer end; an inner end spaced a first predetermined distance from said outer end; internal wall surfaces defining a male coupler receiving aperture extending from said outer end toward said inner end thereof; external wall surfaces; a collar on said outer end having an inner edge at said internal wall surfaces and an outer edge spaced from said external wall surfaces; a plurality of internal ridges on said internal wall surfaces extending from said outer end toward said inner end and a plurality of external ridges on said external wall surfaces extending from said outer end toward said inner end; relief means in regions adjacent said outer end for contributing to the flexibility of said female coupler member adjacent said outer end thereof having walls defining a plurality of slots extending from said internal wall surfaces to said external wall surfaces and extending into said collar from said inner edge toward said outer edge; and said inner end having an interlocking means comprising one of an insertion portion and walls defining an insertion portion receiving aperture; and said inner end of said first female coupler member having said insertion portion and said inner end of said second female coupler member having said walls defining said insertion portion receiving aperture, and said insertion portion of said first female coupler member positioned within said insertion portion receiving aperture of said second female coupler member for interlocking said first female coupler member to said second female coupler member.
Claim 29
Dependent Claim
88 words
The arrangement defined in claim 26, wherein said insertion portion further comprises a first peripheral shoulder and a first peripheral groove on said exterior wall surfaces of said first female coupler member, and said insertion portion receiving aperture further comprises a second peripheral shoulder and a second peripheral groove on said inner wall surfaces of said second female coupler member, and said first peripheral shoulder is positionable in said second peripheral groove and said second peripheral shoulder is positionable in said first peripheral groove for interlocking retention therebetween.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-12-21 | 1985-06-22 | 1985-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-21 | 1989-06-22 | 1989-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-21 | 1993-06-22 | 1993-12-22 | $7700.00 | Window Closed / Lapsed |