Portable step exerciser

• US 7,520,840 B2
• Filed: 03/07/2005
• Issued: 04/21/2009
• Est. Priority Date: 03/07/2005
• Status: Expired due to Fees

• Current Assignee: 2014 shifferaw family revocable trust
• Original Assignee: Tessema Dosho Shifferaw
• Inventors: Shifferaw, Tessema Dosho
• Primary Examiner(s): BAKER, LORI LYNN
• Application Number:
  US11/074,962
• Publication Number:
  US 20060199703A1
• Time in Patent Office: 1,506 Days
• Field of Search: None
• US Class Current: 482/52
• CPC Class Codes: A63B 21/023 Wound springs
• CPC Class Codes: A63B 21/026 Bars; Tubes; Leaf springs A63B21/023 takes precedence
• CPC Class Codes: A63B 2208/0204 Standing on the feet
• CPC Class Codes: A63B 2210/50 Size reducing arrangements for stowing or transport
• CPC Class Codes: A63B 23/0458 Step exercisers without moving parts with movable steps A63B22/04

Abstract

Portable machine for doing stair climbing exercises which has a base movable between horizontal and upright positions, a wheel mounted on the base for rolling engagement with the floor when the base is in the upright position, a first step movable between an operative position beside the base and a storage position within the base, a second step surmounted on the base, and a post pivotally attached to the base for movement between a supporting position generally perpendicular to the base and a handle position generally parallel to the base.

Claims

1. A portable machine for doing stair climbing exercises, comprising:

a base movable between horizontal and upright positions, a wheel mounted on the base for rolling engagement with the floor when the base is in the upright position, a first step movable between an operative position beside the base and a storage position within the base, a second step surmounted on the base, and a post pivotally attached to the base for movement between a supporting position generally perpendicular to the base and a handle position generally parallel to the base.

2. The machine of claim 1 wherein each of the steps comprises a platform and a plurality of resilient supports beneath the platform.

3. The machine of claim 2 wherein the resilient supports include springs.

4. The machine of claim 2 wherein the resilient supports are C-shaped leaf springs.

5. The machine of claim 2 wherein the resilient supports include blocks of resilient material.

6. The machine of claim 2 wherein the resilient supports include arched leaf springs.

7. The machine of claim 2 wherein the platforms are flexible.

8. The machine of claim 1 wherein the post is axially extensible.

9. The machine of claim 1 including a grip at the upper end of the post which can be grasped for support by a person exercising on the steps and in a guiding manner by a person who is rolling the machine about.

10. A portable machine for doing stair climbing exercises, comprising:

a base having an open front adapted to rest on a supporting surface, a first step comprising a platform with resilient supports movable between an operative position in front of the base and a storage position within the base, a second step comprising a platform with resilient supports surmounted on the base, a pair of wheels mounted in front of the base for rolling engagement with the supporting surface when the rear of base is raised, a pair of posts pivotally mounted to opposite sides of the base, means for selectively securing the posts in a first position generally perpendicular to the base and a second position generally parallel to the base, and grips at the upper ends of the posts which serve as handrails for a person exercising on the steps when the posts are in their first position and as handles a person rolling the machine about when the posts are in their second position.

11. The machine of claim 10 wherein the resilient supports include springs.

12. The machine of claim 10 wherein the resilient supports include C-shaped leaf springs.

13. The machine of claim 10 wherein the resilient supports include blocks of resilient material.

14. The machine of claim 10 wherein the resilient supports include blocks of resilient material near the corners of the platform and arched leaf springs between the blocks of resilient material along opposite edges of the platform.

15. The machine of claim 10 wherein the platforms are flexible.

16. The machine of claim 10 wherein the posts are axially extensible and retractable.

17. A portable machine for doing stair climbing exercises, comprising:

a base having an open front, a plurality of springs mounted on the base, a platform mounted on the springs to form an upper step, a platform mounted on springs in front of the base to form a lower step which can be slid into the base when not in use, wheels mounted in front of the base for rolling engagement with the floor when the rear of base is raised, and means connected to the base for use as a support by a person exercising on the steps and as a handle by a person rolling the machine around on the wheels.

18. The machine of claim 17 wherein the springs are C-shaped leaf springs.

19. The machine of claim 17 wherein the springs are arched leaf springs.

20. The machine of claim 17 wherein the platforms are flexible.

21. A portable machine for doing stair climbing exercises, comprising:

a base having an open front, a plurality of resilient legs mounted on the base, a platform mounted on the legs to form an upper step, a platform mounted on legs in front of the base to form a lower step which can be slid into the base when not in use, wheels mounted in front of the base for rolling engagement with the floor when the rear of base is raised, and means connected to the base for use as a support by a person exercising on the steps and as a handle by a person rolling the machine around on the wheels.

22. The machine of claim 21 wherein the resilient legs include blocks of resilient material.

23. The machine of claim 21 wherein the platforms are flexible.

24. The machine of claim 21 further including arched leaf springs between the legs on opposite sides of the platforms.