Playground apparatus

Details Playground apparatus Playground apparatus

2008-05-27

2008-05-27

Nguyen, Kien T (Department: 3711)

Amusement devices

Seesaw

C472S135000, C482S034000

Reexamination Certificate

active

07377856

ABSTRACT:
A playground apparatus comprising at least three separate elongated plank extending in a generally horizontally spaced end-to-end relationship, at least one pivotal support member for pivotally supporting each of the elongated plank in vertically spaced relationship above a support surface for vertical pivotal movement of opposite ends of the elongated planks, and at least two resiliently flexible living hinges each providing a void-free connection between adjacent ends of the elongated planks to eliminate a pinch point while providing for simultaneous vertical movement of said elongated planks.

REFERENCES:
patent: 1263917 (1918-04-01), Mills
patent: 1537686 (1925-05-01), Lynn
patent: 4378112 (1983-03-01), Goldstein
patent: 5037086 (1991-08-01), Strand
patent: 5277450 (1994-01-01), Henschen
patent: 5364313 (1994-11-01), Nickelson
patent: 6003888 (1999-12-01), Godbersen

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