Cushion device for treadmills
First Claim
1. A cushion device for treadmills, comprising:
- a frame having two longitudinal rails and two upper pulleys and two lower pulleys respectively connected to two respective insides of first ends of the two rails of the frame;
a deck having two pairs of holes defined through two sides of a first end of the deck and a second end of the deck pivotably connected to two respective second ends of the two rails of the frame;
two tubes are connected to the two rails of the frame and two activation rods axially extending in the two tubes, each of the two activation rods having a nut member threadedly connected to a threaded section thereof, two slide members slidably mounted to the two activation rods, two springs mounted to the two activation rods and biased between the nut member and the slide member, two bars radially extending through each of the two tubes and each activation rod in each tube including a groove defined in a plain section thereof so that the activation rod spins in the tube, andtwo cables having two respective first ends fixed to the slide members and two respectively second ends extending through each tube, reeving through the lower pulley and the upper pulley and fixed to the first end of the deck.
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Accused Products
Abstract
A cushion device for treadmills includes a frame with two rails and a deck has an end pivotably connected to two respective first ends of the two rails of the frame. Two tubes are connected to the two rails of the frame and two activation rods axially extend in the two tubes and are restrained to only can spin relative to the tubes. Each of the two activation rods has a nut member threadedly connected thereto and a slide member is slidably mounted thereto. A spring is mounted to each of the two activation rods and biased between the nut member and the slide member. Two cables have two respective first ends fixed to the slide members and two respectively second ends of the two cables extend through each tube, reeve through the lower pulley and the upper pulley and are fixed to the first end of the deck.
29 Citations
15 Claims
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1. A cushion device for treadmills, comprising:
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a frame having two longitudinal rails and two upper pulleys and two lower pulleys respectively connected to two respective insides of first ends of the two rails of the frame; a deck having two pairs of holes defined through two sides of a first end of the deck and a second end of the deck pivotably connected to two respective second ends of the two rails of the frame; two tubes are connected to the two rails of the frame and two activation rods axially extending in the two tubes, each of the two activation rods having a nut member threadedly connected to a threaded section thereof, two slide members slidably mounted to the two activation rods, two springs mounted to the two activation rods and biased between the nut member and the slide member, two bars radially extending through each of the two tubes and each activation rod in each tube including a groove defined in a plain section thereof so that the activation rod spins in the tube, and two cables having two respective first ends fixed to the slide members and two respectively second ends extending through each tube, reeving through the lower pulley and the upper pulley and fixed to the first end of the deck. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A cushion device for treadmills, comprising:
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a frame having two longitudinal rails and two upper pulleys and two lower pulleys respectively connected to two respective insides of first ends of the two rails of the frame; a deck having two pairs of holes defined through two sides of a first end of the deck and a second end of the deck pivotably connected to two respective second ends of the two rails of the frame; two tubes are connected to the two rails of the frame and two activation rods axially extending in the two tubes, each of the two activation rods having a rotatable ring connected to an end thereof in the tube, two springs received in the two tubes and one end of each spring connected to the respective one of the two rotatable ring, the other end of each activation rod having a knob, and a cable having a first end extending into each of the tubes and fixed to the other end of the spring in the tube, the other end of the cable extending through tube, reeving through the lower pulley and the upper pulley and fixed to the first end of the deck. - View Dependent Claims (14, 15)
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Specification