Chin-up bar

Details Chin-up bar Chin-up bar

1999-02-09

2001-01-30

Crow, Stephen R. (Department: 3764)

Exercise devices

Gymnastic

Horizontal bar

C482S038000

Reexamination Certificate

active

06179748

ABSTRACT:

TECHNICAL FIELD
This invention relates to home exercise equipment. In particular, the invention relates to a chin-bar that may be installed within a doorway of a home and that is adjustable to accommodate users of different heights.
BACKGROUND OF THE INVENTION
Door mounted exercise bar devices are known in the art. Exercise bar devices are taught in U.S. Pat. No. 3,915,452 to Winblad for a “Portable Chinning Bar Assembly”, U.S. Pat. No. 4,529,191 to Miller, et al. for a “Doorway Mounted Horizontal Bar”, U.S. Pat. No. 5,417,628 to Vanderbleek for an “Exercise Device for Chin-Ups” and U.S. Pat. No. 5,180,350 to Thomas for an “Exercise Bar Apparatus”. The related art devices teach various methods and devices for mounting an exercise bar within a doorway. U.S. Pat. No. 4,458,894 to Dudley for a “Portable Support Bar Assembly” teaches a device for affixing a first horizontal bar to a door-jamb for supporting a second horizontal support bar outwardly and above a doorway. Improvements are desired in ease of installation. Also, a disadvantage with the related art devices is that once the exercise device is secure within a doorway, the hand-grip bar is set at a specific height. Therefore, the device does not easily accommodate users of different heights.
BRIEF SUMMARY OF THE INVENTION
The apparatus of the invention is a doorway mounted chin-up bar device having a rod that secures to an inside of a doorway. Preferably, the rod is comprised of an interior tube and an exterior rotating sleeve, wherein the interior tube is received in telescoping engagement within the rotating sleeve. A mount is positioned on each end of the rod for securing the rod within the doorway.
A pair of approximately U-shaped extension bars are pivotally affixed perpendicularly to the rod. The extension bars extend outward from the rod and extend upward. The extension bars have a first end that extends out of a plane defined by the doorway in a first direction and a second end that extends out of the plane of the doorway in a second direction. A first hand-grip bar is affixed to the first end of the extension bars and a second hand-grip bar is affixed to a second end of the extension bars.
When a user grasps the first hand-grip bar and pulls down, the extension bars pivot about the rod until the second hand-grip bar engages a wall surface above the doorway. The user may proceed to engage in chin-ups while being supported by the first hand-grip bar.
Alternatively, the user may grasp the second hand-grip bar and pull down. The extension bars will pivot about the rod until the first hand-grip bar engages the wall surface above the doorway. The second hand-grip bar may then support the user while the user engages in chin-ups. The first hand-grip bar may be located further away from the rod than the second hand-grip bar. Since the first hand-grip bar and second hand-grip bar may be at different distances away from the rod, the height from the floor of a hand-grip bar may vary according to whether the user is being supported by the first hand-grip bar or the second hand-grip bar.


REFERENCES:
patent: 3837642 (1974-09-01), Martin
patent: 3915452 (1975-10-01), Winblad
patent: 4458894 (1984-07-01), Dudley
patent: 4513961 (1985-04-01), Killen
patent: 4529191 (1985-07-01), Miller et al.
patent: 4844448 (1989-07-01), Niznik
patent: 5180350 (1993-01-01), Thomas
patent: 5417628 (1995-05-01), Vanderbleek
patent: 5752903 (1998-05-01), Chang
Body Builder's Discount Outlet (BDO) Catalog, pp. 41-42 copyright 1994.

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