US5295928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bi-directional stair/treadmill/reciprocating-pedal exerciser
Assignee: Individual
•
Filing: 1992-10-30
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Granted: 1994-03-22
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Expires: 2012-10-30
Abstract
Abstract This invention is an improvement in stair exercising equipment which recognizes the importance of training muscle groups, tendons, and ligaments for walking downhill on steps or on an incline. Accordingly, it provides powered means for a moveable staircase, for an incline, or for reciprocating pedals to rise, thereby allowing a person to walk downhill.
Inventors
- 👤 Brian G. Rennex
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:12
CPC Classifications
A; A63; A63B; A63B21/00; A63B21/00178; A63B21/06; A63B21/062; A63B21/0626; A63B21/0628; A63B22/00; A63B22/20; A63B22/201; A63B22/205; A63B21/005; A63B21/0058
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
139 words
An improved portable stepping exerciser comprising: an endless belt inclined at an angle relative to horizontal; a plurality of steps attached to said endless belt; first belt drive means for moving said endless belt in a first direction, whereby the center of mass of a user who has stepped onto one of said steps is shifted upwardly when said belt is moving in said first direction; second belt drive means for moving said endless belt in a second direction opposite said first direction, whereby the center of mass of said user who has stepped onto one of said steps is shifted downwardly when said belt is moving in said second direction; and switching means coupled to said first belt drive means and said second belt drive means for selecting one of said directions of movement of said endless belt.
Claim 2
Dependent Claim
139 words
An improved portable stepping exerciser comprising: an endless belt inclined at an angle relative to horizontal; a plurality of steps attached to said endless belt; first belt drive means for moving said endless belt in a first direction, whereby the center of mass of a user who has stepped onto one of said steps is shifted upwardly when said belt is moving in said first direction; second belt drive means for moving said endless belt in a second direction opposite said first direction, whereby the center of mass of said user who has stepped onto one of said steps is shifted downwardly when said belt is moving in said second direction; and switching means coupled to said first belt drive means and said second belt drive means for selecting one of said directions of movement of said endless belt.
Claim 3
Dependent Claim
29 words
The improved portable stepping exerciser of claim 1, further comprising: a plurality of pulleys, each of which is positioned in contact with an inner surface of said endless belt.
Claim 4
Dependent Claim
117 words
The improved portable stepping exerciser of claim 1, wherein said switching means comprises: motor drive means for moving said endless belt in either said first direction or said second direction; a drive pulley; said first belt drive means coupled to said motor drive means and said drive pulley for rotating said drive pulley in a first rotational direction, whereby said endless belt moves in said first direction; said second belt drive means coupled to said motor drive means and said drive pulley for rotating said drive pulley in a second rotational direction; whereby said endless belt moves in said second direction; means for selectively operating either said first belt drive means or said second belt drive means.
Claim 5
Dependent Claim
41 words
The improved stepping exerciser of claim 3, wherein said motor drive means comprises: a bi-directional drive motor; a first pulley; a drive belt coupled to said motor and said first pulley; and a first pulley gear attached to said first pulley.
Claim 6
Dependent Claim
34 words
The improved stepping exerciser of claim 3, wherein said first belt drive means comprises a first endless belt coupled to said first pulley and selectively coupleable to said drive pulley by said switching means.
Claim 7
Dependent Claim
47 words
The improved stepping exerciser of claim 4, wherein said second belt drive means comprises: a reversing pulley; a reversing gear coupled to said first pulley gear; and a second endless belt couple dot said reversing pulley and selectively coupleable to said drive pulley by said switching means.
Claim 8
Dependent Claim
25 words
The portable stepping exerciser of claim 1, wherein each step comprises: a raised platform; and means for rotating said raised platform to a selected position.
Claim 9
Dependent Claim
63 words
The improved portable stepping exerciser of claim 7, wherein said rotating means comprises: a pivot connected to one end of said raised platform; a bolt movably attached to said step and coupled to the underside of the opposite end of said raised platform; a handle for moving said bolt along its longitudinal axis, whereby the inclination of said raised platform may be adjusted.
Claim 10
Dependent Claim
38 words
The improved portable stepping exerciser of claim 1, further comprising: means for supporting said endless belt; and jack means for raising or lowering one end of said support means whereby the incline of said belt may be changed.
References Cited (Backward Citations)
US1909190A
Cited
US3497215A
Cited
US3592466A
Cited
SU1227215A1
Cited
US4720093A
Cited
US4733858A
Cited
US4726581A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-03-21 | 1997-09-20 | 1998-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-03-21 | 2001-09-20 | 2002-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-03-21 | 2005-09-20 | 2006-03-22 | $7700.00 | Window Closed / Lapsed |