Anticipate This!™ | Patent and Trademark Law Blog

They Invented What? (No. 47)

Posted in They Invented What? by Jake Ward on May 16, 2007

U.S. Pat. No. 6,872,145:  Solo-operable seesaw.

JW Note:  Per David McClaughry at HD&P, this invention “takes all the fun out of the teeter-totter.”  Enjoy.

 soloseesaw

What is claimed as new and what is desired to secure by Letters Patent of the United States is:

1. A seesaw movable between ground and elevated positions and comprising: a base member having oppositely spaced side sections and a back section integral therewith and spaced therebetween, said side sections having respective bottom edge portions for engaging a ground surface and further having respective top edge portions for defining an apex of said base member, said base member further including a plurality of elongated braces having opposed end portions connected thereto and for maintaining said side sections at substantially stable positions; an elongated plank having a first end portion engaged with said base member and being selectively pivotable thereabout, said plank further having an oppositely spaced second end portion defining a seat for receiving an operator thereon; and means for pivotally lifting said plank upwardly along a predetermined arcuate path after said second end portion of said plank is moved to select lowered positions, said lifting means being connected to said base member and said plank respectively.

2. The seesaw of claim 1, wherein said plank further has a centrally disposed longitudinal axis and includes a plurality of elongated handle bars extending outwardly from the plank and substantially laterally to the axis.

3. The seesaw of claim 1, wherein said lifting means comprises: a spring-loaded hydraulic air piston having opposed end portions and a plurality of brackets connected thereto and for pivotally connecting said piston to said seesaw so that said piston can be contemporaneously moved between a linear path and an arcuate path during operating conditions, said piston being disposed substantially medially between said side sections wherein one said plurality of brackets are connected to one said plurality of braces.

4. The seesaw of claim 3, wherein said lifting means further comprises: an elongated swivel pin transversely passing through said plank and for connecting same to said base member, said swivel pin cooperating with said piston for allowing said plank to operably move along the arcuate path.

5. The seesaw of claim 1, wherein said base member and said plank are formed from light-weight material and have respective hollow interior portions so that said seesaw can be readily and easily transported between remote locations.

6. A seesaw movable between ground and elevated positions and comprising: a base member having oppositely spaced side sections and a back section integral therewith and spaced therebetween, said side sections having respective bottom edge portions for engaging a ground surface and further having respective top edge portions for defining an apex of said base member, said base member further including a plurality of elongated braces having opposed end portions connected thereto and for maintaining said side sections at substantially stable positions; an elongated plank having a first end portion engaged with said base member and being selectively pivotable thereabout, said plank further having an oppositely spaced second end portion defining a seat for receiving an operator thereon; and means for pivotally lifting said plank upwardly along a predetermined arcuate path after said second end portion of said plank is moved to select lowered positions, said lifting means being connected to said base member and said plank respectively; said plank further having a centrally disposed longitudinal axis and including a plurality of elongated handle bars extending outwardly from the plank and substantially laterally to the axis.

7. The seesaw of claim 6, wherein said lifting means comprises: a spring-loaded hydraulic air piston having opposed end portions and a plurality of brackets connected thereto and for pivotally connecting said piston to said seesaw so that said piston can be contemporaneously moved between a linear path and an arcuate path during operating conditions, said piston being disposed substantially medially between said side sections wherein one said plurality of brackets are connected to one said plurality of braces.

8. The seesaw of claim 7, wherein said lifting means further comprises: an elongated swivel pin transversely passing through said plank and for connecting same to said base member, said swivel pin cooperating with said piston for allowing said plank to operably move along the arcuate path.

9. The seesaw of claim 7, wherein said base member and said plank are formed from light-weight material and have respective hollow interior portions so that said seesaw can be readily and easily transported between remote locations.

10. A seesaw movable between ground and elevated positions and comprising: a base member having oppositely spaced side sections and a back section integral therewith and spaced therebetween, said side sections having respective bottom edge portions for engaging a ground surface and further having respective top edge portions for defining an apex of said base member, said base member further including a plurality of elongated braces having opposed end portions connected thereto and for maintaining said side sections at substantially stable positions; an elongated plank having a first end portion engaged with said base member and being selectively pivotable thereabout, said plank further having an oppositely spaced second end portion defining a seat for receiving an operator thereon, said plank further having a centrally disposed longitudinal axis and including a plurality of elongated handle bars extending outwardly from the plank and substantially laterally to the axis; and means for pivotally lifting said plank upwardly along a predetermined arcuate path after said second end portion of said plank is moved to select lowered positions, said lifting means being connected to said base member and said plank respectively, said lifting means comprising a spring-loaded hydraulic air piston having opposed end portions and a plurality of brackets connected thereto and for pivotally connecting said piston to said seesaw so that said piston can be contemporaneously moved between a linear path and an arcuate path during operating conditions, said piston being disposed substantially medially between said side sections wherein one said plurality of brackets are connected to one said plurality of braces.

11. The seesaw of claim 10, wherein said lifting means further comprises: an elongated swivel pin transversely passing through said plank and for connecting same to said base member, said swivel pin cooperating with said piston for allowing said plank to operably move along the arcuate path.

12. The seesaw of claim 10, wherein said base member and said plank are formed from light-weight material and have respective hollow interior portions so that said seesaw can be readily and easily transported between remote locations.

2 Responses

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  1. Angel said, on January 1, 2011 at 8:28 pm

    When was it patented?

  2. Jake Ward said, on January 2, 2011 at 10:17 pm

    March 29, 2005.


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