US5599259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exercise treadmill
Assignee: Brunswick Corp
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Filing: 1995-11-13
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Granted: 1997-02-04
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Expires: 2015-11-13
Abstract
Abstract To improve tracking, an exercise treadmill is provided with a frame including molded plastic pulleys, having an integral gear belt sprocket, an endless belt extending around the pulleys and a motor operatively connected to the rear pulley to drive the belt. The pulleys are molded out of plastic and have a diameter of approximately nine inches. A mold and method for producing large diameter treadmill pulleys having an integrally molded sprocket are also disclosed. A deck underneath the running surface of the belt is supported by resilient members. A positive lateral belt tracking mechanism is used to correct the lateral position of the belt. A belt position sensor mechanism is used in combination with a front pulley pivoting mechanism to maintain the belt in the desired lateral position on the pulleys. The exercise treadmill also includes a lift mechanism with an internally threaded sleeve engaged to vertically aligned nonrotating screws. A user display of foot impact force on the belt is also provided.
Inventors
- 👤 Richard E. Skowronski
- 👤 Kenneth F. Lantz
- 👤 Tomas F. Leon, deceased
- 👤 Donald J. Alexander
- 👤 George Kolomayets
- 👤 Vincent C. Adams
- 👤 Eugene B. Szymczak
- 👤 Edward V. Minnich
- 👤 Wade K. Totzke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:10
CPC Classifications
A; A63; A63B; A63B22/00; A63B22/0015; A63B22/0023; A63B22/02; A63B22/0207; A63B22/0214; A63B22/0235; A63B22/0242; A63B22/025; A63B2220/00; A63B2220/17; A63B2220/50; A63B2220/51; A63B2220/53; Y; Y10; Y10S; Y10S482/00; Y10S482/90; Y10S482/901; Y10S482/904
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
175 words
An exercise treadmill, comprising: a frame structure including two rotatable pulleys, said pulleys being positioned substantially parallel to each other, and a pair of spaced apart longitudinal frame members for providing longitudinal structural support for said frame structure; means for rotating one of said pulleys; an endless, moveable surface looped around said pulleys to form an upper an and a lower run, said movable surface being rotated when one of said pulleys is rotated, and providing an exercise surface on which a user can walk or run while exercising; a deck member secured beneath at least a portion of said upper run; and support means including a plurality of resilient support members for supporting said deck member on said frame structure effective to permit said deck member to deflect downwardly with a variable rate of deflection in response to the impact force of the user's feet on said exercise surface and to permit at least limited longitudinal movement of said deck member with respect to said frame structure when said deck member is deflected downwardly.
Claim 2
Dependent Claim
175 words
An exercise treadmill, comprising: a frame structure including two rotatable pulleys, said pulleys being positioned substantially parallel to each other, and a pair of spaced apart longitudinal frame members for providing longitudinal structural support for said frame structure; means for rotating one of said pulleys; an endless, moveable surface looped around said pulleys to form an upper an and a lower run, said movable surface being rotated when one of said pulleys is rotated, and providing an exercise surface on which a user can walk or run while exercising; a deck member secured beneath at least a portion of said upper run; and support means including a plurality of resilient support members for supporting said deck member on said frame structure effective to permit said deck member to deflect downwardly with a variable rate of deflection in response to the impact force of the user's feet on said exercise surface and to permit at least limited longitudinal movement of said deck member with respect to said frame structure when said deck member is deflected downwardly.
Claim 3
Dependent Claim
40 words
The exercise treadmill of claim 1 wherein said variable rate of deflection results in said deck deflecting downwardly a proportionally decreasing incremental distance in response to an increase in the impact force of the user's feet on said exercise surface.
Claim 4
Dependent Claim
46 words
The exercise treadmill of claim 2 wherein said plurality of resilient support members secured between said deck member and said frame structure and wherein said resilient support members have a variable spring constant that increases with an increase in the compression of said resilient support members.
Claim 5
Dependent Claim
15 words
The exercise treadmill of claim 3 wherein said resilient support members are elliptical in configuration.
Claim 6
Dependent Claim
36 words
The exercise treadmill of claim 3 further including a plurality of additional resilient support members secured between said deck member and said frame structure wherein said additional resilient support members have a substantially constant spring constant.
Claim 7
Dependent Claim
55 words
The exercise treadmill of claim 2 wherein said deck member deflects approximately according to a first relation y=400x for a first range of deflections and approximately according to a second relation y=640x-96 for a second range of deflections, where x represents the amount of deflection in inches and y represents the impact force in pounds.
Claim 8
Dependent Claim
14 words
The exercise treadmill of claim 2 wherein said deck member includes a wood member.
Claim 9
Dependent Claim
17 words
The exercise treadmill of claim 7 wherein said wood member has a thickness of approximately 5/8 inches.
Claim 10
Dependent Claim
24 words
The exercise treadmill of claim 8 wherein said deck member includes a low friction laminate applied to the top surface of said wood member.
Claim 11
Dependent Claim
26 words
The exercise treadmill of claim 7 wherein said support means includes a plurality of resilient support members secured between the frame structure and said deck member.
Claim 12
Dependent Claim
34 words
The exercise treadmill of claim 10 wherein at least a portion of said resilient support members have a variable spring constant that increases with the increase in the compression of said resilient support members.
Claim 13
Dependent Claim
23 words
The exercise treadmill of claim 11 wherein said portion of said resilient support members having a variable spring constant are elliptical in shape.
Claim 14
Dependent Claim
19 words
The exercise treadmill of claim 11 wherein at least a portion of said resilient members are cylinderical in shape.
Claim 15
Dependent Claim
50 words
The exercise treadmill of claim 10 wherein said resilient support members are secured between said deck member and said frame by a plurality of fastening members extending through at least a portion of said wood member and through at least a portion of each one of said resilient support members.
Claim 16
Dependent Claim
21 words
The exercise treadmill of claim 14 wherein said fastening members are secure to a top portion of said resilient support members.
Claim 17
Dependent Claim
19 words
The exercise treadmill of claim 14 wherein said fastening members are threaded bolts which extend through said deck member.
Claim 18
Dependent Claim
17 words
The exercise treadmill of claim 16 wherein said wood member has a thickness of approximately 5/8 inches.
References Cited (Backward Citations)
FR1432392A
Cited
US3994261A
Cited
US4344616A
Cited
US4445683A
Cited
US4358105A
Cited
US4364556A
Cited
US4502679A
Cited
SU1248617A1
Cited
US4643418A
Cited
US4635928A
Cited
SU1256755A1
Cited
US4664371A
Cited
US4729558A
Cited
SU1321430A1
Cited
GB2184361A
Cited
US4842266A
Cited
US4786049A
Cited
US4749181A
Cited
US4819583A
Cited
US4938475A
Cited
US4844449A
Cited
US4792134A
Cited
US4984810A
Cited
US5072928A
Cited
WO1989007473A1
Cited
US5081991A
Cited
US5279528A
Cited
WO1992011905A1
Cited
US5336145A
Cited
US5318487A
Cited
US5336144A
Cited
US5454772A
Cited
US5441468A
Cited
US5476430A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-02-04 | 2000-08-05 | 2001-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-02-04 | 2004-08-05 | 2005-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-02-04 | 2008-08-05 | 2009-02-04 | $7700.00 | Window Closed / Lapsed |