Patent Application
20150190670
The present disclosure relates to exercise equipment, for example stair climber apparatuses, stair apparatuses, and stair climber systems and methods.
U.S. Pat. No. 4,927,136 discloses an electromechanical and more particularly an electromagnetic brake that is utilized in the control of exercise equipment, including escalator-type stair-climbing apparatus in which electronically controllable torque, including a clamping torque, is applied to a rotary shaft to load the exercise equipment, thereby giving complete electronic control to the operation of the exercise apparatus, including a safety locking function.
U.S. Pat. No. 5,120,050 discloses a step-type exerciser that has an endless loop of steps in which each step has an associated pair of pulleys, one at each end, and these run on fixed “inside out” Vee belts. Drive is transmitted by toothed pinion blocks carried adjacent to each roller but angularly fixed whereas the rollers are rotatable, and the blocks engage a second belt which is driven by a motor.
U.S. Pat. No. 5,145,475 discloses an exerciser that provides low impact exercise for the upper and lower body of an operator. The apparatus includes an upper portion having moving rungs simulating a hand-over-hand motion to exercise one's upper body and a lower portion having moving platforms simulating a stair-like climbing motion to exercise one's lower body. The upper and lower portions are oriented at different angles to maximize operator comfort, the angle of the lower portion in particular providing clearance for one's knees during use. The exerciser also includes a variable speed control to adjustable vary the speed of the moving rungs and platforms, thereby adapting to the needs of various operators.
U.S. Pat. No. 5,328,420 discloses a stair step exerciser that is mounted on a frame having horizontal and vertical components. A carriage comprised of a pair of side plates is pivoted to one end of a horizontal component and is retained at the other end in one of a series of vertical stops to selectively determine the angle of the carriage with respect to the frame. The carriage has pulleys at both ends which support the belts on which treads are pivoted at one end. The other end of the treads rest on one rail of a four bar linkage, which linkage expands as the carriage angle is decreased and collapses as the carriage angle is increased so as to always maintain the treads horizontal. A pair of hand cables is provided which move at substantially the same speed as the treads. The hand cables are mounted so as to be closer to the treads as the angle of the carriage increases and so as to move away from the treads as the angle of the carriage decreases.
U.S. Pat. No. 5,556,352 discloses a stair exerciser having a plurality of revolvable steps supported by endless chain conveyors and a control device for speed control, which, by the weight and action of a operator walking on the steps, enables the mechanism to run cyclical and continuous action thereby affording the operator stair climbing like exercises.
U.S. Pat. No. 5,769,759 discloses an apparatus for simulating stair climbing which allows selection of step height. A side member is pivotally mounted to a base and oriented at a selected angle with respect to the base. A displacement mechanism mounted to the base is attached to the side member for rotating the side member with respect to the base. A series of platforms travels in a selected platform path including along the side member. The top surface of each platform is a predetermined horizontal distance from the top surface of an adjacent platform which corresponds to the selected angle.
This Summary is provided to introduce a selection of concepts that are further described herein below in the Detailed Description. This Summary is not intended to identify key or essential features of the claimed subject matter, nor is it intended to be used as an aid in limiting the scope of the claimed subject matter.
In certain examples, a stair climber apparatus has a frame and a plurality of stairs that are pivotably connected together in series and travel in a loop with respect to the frame. The plurality of stairs comprises a first stair having a tread and a riser. The tread and riser are pivotably connected together at a first pivot axis. The tread has a tread surface that supports an operator's foot. A stopping member is on the tread. The stopping member has a stop surface that extends transversely to and upwardly from the tread surface and prevents the operator's foot from overshooting the first pivot axis and engaging the riser as the operator steps onto the tread surface when the riser is pivoted away from the tread.
In certain examples, the stop surface is planar and extends perpendicular to the tread surface. The stopping member can be one of a plurality of stopping members that are spaced apart from each other and aligned with respect to the first pivot axis. Each stopping member has a stop surface that extends transversely upwardly from the tread surface. The riser can comprise a plurality of projections that are interdigitated amongst the plurality of stopping members along the first pivot axis. The first pivot axis extends through the plurality of stopping members and the plurality of projections. The plurality of projections can also have stop surfaces that are aligned with the stop surfaces of the plurality of stopping members when the riser is pivoted towards the tread surface. The plurality of projections can be spaced apart so as to define a plurality of recesses in which the plurality of stopping members is disposed.
Examples of stair climber apparatuses and related stair apparatuses are described with reference to the following drawing figures. The same numbers are used throughout the figures to reference like features and components.
In the present Description, certain terms have been used for brevity, clearness and understanding. No unnecessary limitations are to be implied therefrom beyond the requirement of the prior art because such terms are used for descriptive purposes only and are intended to be broadly construed. The different stair climber apparatuses, stair apparatuses, systems and methods described herein may be used alone or in combination with other apparatuses, systems and methods. Various equivalents, alternatives and modifications are possible within the scope of the appended claims. Each limitation in the appended claims is intended to invoke interpretation under 35 U.S.C. §112, sixth paragraph only if the terms “means for” or “step for” are explicitly recited in the respective limitation.
Referring to
The drive chains 44 support the plurality of stairs 20 as the stairs 20 travel in the noted loop around the inclined support 14. Each of the stairs 20 has a tread 64 and a riser 66. The tread 64 and the riser 66 are pivotably connected together at a conventional hinge formed by a pivot shaft 21 that extends along a first pivot axis 68 (see
Rotation of the pair of drive chains 44 carries the bearings 25 around the inner sprockets 42 at the upper end portion 18 and around the lower sprockets 46 at the lower end portion 16. As the bearings 25 rotate around the inner sprockets 42 and lower sprockets 46, the bearings 25 are fed into the bearing support 27 and received from the bearing support 27, or vice versa depending upon the direction of operation of the electric motor 22. The stairs 20, via the bearings 25 and the pivot shafts 21, travel with the pair of drive chains 44 around the respective sprockets 42, 46. During said movement, the stairs 20 pivot by gravity with respect to each other along the pivot shafts 41. The tread 64 and riser 66 of each stair 20 also pivot by gravity with respect to each other along the pivot shafts 21. The stairs 20 are configured so that the riser 66 pivots towards the tread 64 up until the bearings 25 begin to ride along the bearing support 27. As the bearings 25 exit the bearing support 27, the tread 64 and riser 66 are configured to pivot away from each other. These pivoting movements of the stairs 20 are shown in
Referring to
The stair climber apparatus 10 also has a control circuit 110 for controlling movement of the stair apparatus 11. The control circuit 110 includes a programmable processor, a memory, a timer, and an input/output device. The processor is communicatively connected to a computer readable medium that includes volatile or nonvolatile memory upon which computer readable code is stored. The processor can access the computer readable code on the computer readable medium, and upon executing the code, can send signals to carry out functions according to the methods described herein below. Execution of the code allows the control circuit 110 to control (e.g. actuate) a series of devices on the stair climber apparatus 10, including but not limited to the electric motor 22. The control circuit 110 may also read values from sensors, and interpret the data using look-up tables or algorithms stored in the memory. Such sensors can include but are not limited to an encoder 111 for detecting and communicating speed and direction of the plurality of stairs 20 to control circuit 110. Such sensors can also include, for example, sensors associated with various operator input devices, which will be further described herein below. The control circuit 110 can be connected to the devices (such as for example the electric motor 22 and various sensors) with which it communicates via conventional wired and/or wireless communication links. It should be noted that the dashed lines shown in
As mentioned above, several operator input devices are provided on the stair climber apparatus 10 for communicating operator commands to the control circuit 110. The operator input devices can include, for example one or more conventional video/touch control panels 114 and/or one or more conventional speed control push buttons 116 located on handle members 118. The video/touch control panels 114 and/or buttons 116 can communicate operator inputs to the control circuit 110 for operating the stair climber apparatus 10 according to one or more predetermined exercise programs having certain time periods and providing certain resistance characteristics. Additional the operator input devices can include, for example heart rate monitors 119 located on the handle members 118 for communicating heart rate of the operator for communication to the control circuit 110. The operator input devices are not limited to these types of devices and can also or alternatively include devices for providing output devices such as visual, audial, tactile, and/or other sensory feedback to the operator. The operator inputs to the control circuit 110 via the operator input devices are acted upon by the control circuit 110 to control operation of the stair climber apparatus 10 according to various programs, which include programs for affecting the speed and direction of movement of the plurality of stairs 20 via the electric motor 22. Thus, when the operator is located on the stair climber apparatus 10, the operator can input, via the various input devices, speed commands to the control circuit 110 for controlling speed of movement and direction of movement of the plurality of stairs 20, as will be understood by those having ordinary skill in the art. A operator boarding (i.e. second) operator input device 120 is also located at the lower end portion 16 of the inclined support 14 and will be described further herein below.
During operation, as the operator steps forwardly (i.e. in the upward direction 26) along the inclined support 14, the electric motor 22 rotates the output shaft 28 to move the plurality of stairs 20 in the downward direction 26 with respect to the inclined support 14. A specific speed of movement of the plurality of stairs 20 can be selected (i.e. set) by the operator via one of the noted input devices. Based upon this input, the control circuit 110 is programmed to control the output torque and speed of the electric motor 22 to maintain the speed of movement of the plurality of stairs at a constant speed selected by the operator, despite physical characteristics of the operator and/or the changes in stepping speed of the operator. The speed of the stairs 20 and direction of movement of the stairs 20 is sensed and communicated to the control circuit 110 via the encoder 111, as is conventional. Based upon this information, the control circuit 110 adjusts the power (e.g. current) to the electric motor 22 to thereby affect the speed of the electric motor 22. Power can be supplied to the electric motor 22 via a conventional power cord, and/or one or more batteries, and/or the like.
Referring to
To prevent such an occurrence, one or a plurality of stopping members 72 is disposed on the tread 64 of each of the stairs 20 in the plurality of stairs 20. Referring to one of the stairs (i.e. a first stair) in
The particular physical configuration of the stopping members 72 and associated stop surfaces 74 can vary from that which is shown. In this example, the stop surface 74 is planar and extends perpendicular to the tread surface 70. Each stopping member 72 in the plurality is spaced apart from the other stopping members 72 in the plurality, and the plurality of stopping members 72 are aligned with respect to the first pivot axis 68. The stop surface 74 extends transversely to and upwardly from the tread surface 70.
Referring to
Each tread 64 includes a front edge 86 and a back edge 88. Each riser 66 includes a front edge 90 and a back edge 92. The back edge 88 of the tread 64 is pivotably connected to the front edge 90 of the riser 66 at the noted first pivot axis 68. In this manner, the plurality of stopping members 72 prevent any portion of the operator's foot 73 from overshooting the back edge 88 of the tread 64 as the operator steps onto the tread surface 70 when the riser 66 is pivoted out of the angle B with respect to the tread 64.
Referring to
This disclosure thus provides a plurality of stairs 20 that travel in the noted loop around the inclined support 14 in such a manner that when the operator's foot 73 steps on the stair at the upper end portion 18 of the inclined support 14, the operator's toe 79 or any portion of the operator's body will not be impinged upon or pinched by the riser 66 as the riser 66 pivots around the center live shaft 43 and moves from the angle A to the angle B with respect to the tread 64. More specifically, the operator's toe 79 will be blocked from overshooting the first pivot axis 68 about which the riser 66 pivots, thereby protecting the operator's toe 79 and/or other body parts from becoming impinged upon or pinched.
