Exercise devices – Gymnastic – Projector
Reexamination Certificate
2008-01-07
2008-09-09
Donnelly, Jerome (Department: 3764)
Exercise devices
Gymnastic
Projector
C482S028000
Reexamination Certificate
active
07422547
ABSTRACT:
A novel trampoline at least includes: a trampoline frame; a trampoline mat operatively surrounded by the trampoline frame; and a plurality of trampoline spring members operatively coupled between the trampoline frame and the trampoline mat. Each trampoline spring member at least includes: a first spring coupler located at a first end of the spring member; a second spring coupler located at a second end of the spring member; a first spring member section coupled to the first spring coupler; a second spring member section coupled to the second spring coupler; at least a third spring member section coupled between the first spring member section and the second spring member section, the third spring member section having a spring constant greater than the spring constants of the first and second spring member sections. The effective spring constant of the spring members increases stepwise with increases in the forces transmitted by trampoline users, and overall spring member deflections are dampened with increases in the forces transmitted by trampoline users.
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Advantia Law Group
Donnelly Jerome
Starkweather Michael W.
Webb Jason P.
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