File:Variable resistance exercising device.png
![File:Variable resistance exercising device.png](https://upload.wikimedia.org/wikipedia/commons/thumb/7/7b/Variable_resistance_exercising_device.png/388px-Variable_resistance_exercising_device.png?20180926051317)
Original file (1,255 × 1,940 pixels, file size: 60 KB, MIME type: image/png)
Captions
Captions
Summary
[edit]DescriptionVariable resistance exercising device.png | An improved exercising device for exercising the legs of a user includes a frame member with a lever arm having one end pivotably attached thereto. The lever arm extends downwardly from the portion of the frame member to which it is pivotably connected, and a pair of foot-engaging force transferring members are mounted on the lower end of the lever arm. A cable has one end pivotably connected near the lower end of the lever arm, passes around an eccentrically mounted pulley and has its other end connected to weights. As the user lifts the lower portions of his legs, the lever arm is pivoted to pull the cable and the weights attached thereto, thereby strengthening the knee muscles of the user. The eccentrically mounted pulley varies the resistance to movement of the user's lower legs initially increasing the resistance and then decreasing the resistance in a sinusoidal manner as the lower legs are lifted to pivot the lever arm and lift the weights. |
Date | |
Source | US patent #4,256,302 |
Author | Inventors: Dennis L. Keiser, Gideon B. Ariel |
Permission (Reusing this file) |
This drawing was included in the application for US patent #4,256,302[1] with a priority date of March 10, 1976. It had no copyright notice and is therefore public domain. |
Licensing
[edit]Public domainPublic domainfalsefalse |
![]() |
This work is in the public domain in the United States because it was published in the United States between 1929 and 1977, inclusive, without a copyright notice. For further explanation, see Commons:Hirtle chart as well as a detailed definition of "publication" for public art.
Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties. العربية ∙ беларуская (тарашкевіца) ∙ čeština ∙ Deutsch ∙ Ελληνικά ∙ English ∙ español ∙ français ∙ Bahasa Indonesia ∙ italiano ∙ 日本語 ∙ 한국어 ∙ македонски ∙ Nederlands ∙ português ∙ русский ∙ sicilianu ∙ slovenščina ∙ ไทย ∙ Tiếng Việt ∙ 中文(简体) ∙ 中文(繁體) ∙ +/− |
![]() |
Original upload log
[edit]Date/Time | Dimensions | User | Comment |
---|---|---|---|
2016-12-01 16:17:45 | 1255 × 1940 | Hroth69 | An improved exercising device for exercising the legs of a user includes a frame member with a lever arm having one end pivotably attached thereto. The lever arm extends downwardly from the portion of the frame member to which it is pivotably connected... |
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 05:13, 26 September 2018 | ![]() | 1,255 × 1,940 (60 KB) | FSock (talk | contribs) | Transferred from en.wikipedia (MTC!) (1.1.1) |
You cannot overwrite this file.
File usage on Commons
The following page uses this file:
File usage on other wikis
The following other wikis use this file:
- Usage on en.wikipedia.org
Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Horizontal resolution | 118.11 dpc |
---|---|
Vertical resolution | 118.11 dpc |