1. Field of the Invention
The present invention relates to an ergonomic handle, unlike traditional handles currently used on many wheeled luggages or carts, and particularly the present invention is a more user friendly method of pulling these wheeled apparatuses.
2. Description of Prior Art
Since the invention of traditional wheeled luggages or carts, people have been inclined to pull many of these apparatuses by means of a traditional and commonly used parallel-to-the-luggage handle that is not normally user friendly.
Most of these prior handle designs put the users hand in an abnormal position for pulling, these wheeled luggages or carts. This twisted hand and wrist position used for grasping this prior handle design, usually at a 90 degrees angle to the body—the hand twisted either to the extreme right with the thumb pointed away from the body and the fingers around the handle folded forward, or to the extreme left with the thumb pointed toward the body and the fingers around the handle folded toward the back. Again, these unnatural hand positions needed to pull these wheeled luggages or carts not only puts undue stress on the wrist, but also strains the lower and upper arm and shoulder as evidenced by the users constant alternation of their hand grip. These abnormal hand and arm positions can also negatively effect the users neck and related muscles which may cause side pain, back pain, headaches, and other aches and pains in the persons body caused by this unnecessary stress.
The present invention has arisen to mitigate the afore-described problems.
The primary objective of the present invention is to provide a user friendly ergonomic handle that can easily be converted from the common parallel-to-the-luggage-handle-design to a handle that is put at a more positive perpendicular angle to this wheeled luggage handle by simply lifting and locking a swivel handle housed within a similar to the conventional parallel-to-the-luggage handle. This new swivel-out-of-the-housing handle is designed primarily to put the users hand in a more normal position for pulling these wheeled apparatuses, hence tremendously reducing undue stress on the users wrist, lower and upper arm, side, shoulder, neck and other related muscles. The swivel handle can then be released and dropped back inside its own housing for easy storage.
The secondary objective of the present invention is to provide an ergonomic handle design that can easily be adapted to most manufacturing of wheeled luggages or carts who use the common retractable up-rights* on their designs. This can be done without too much change in the overall design or concept of these existing apparatuses.
Referring to
The swivel handle 22 comprises an overall contoured design suitable for hand gripping with a large lip at one end of the swivel handle 22 to prevent hand grip slippage. The other end of the swivel handle 22 is rounded on one side with three flat sides. A shaft 139 runs length-wise through the swivel handle 22 in two-step graduates. The first step consists of a narrow shaft starting from the lip-end of the swivel handle 22 and goes approximately two-thirds of the way through the swivel handle 22. The second step of the same shaft 139 is wider and goes the other third and exiting at the handle housing 10 end of the swivel handle 22.
The graduated shaft 139 in the swivel handle 22 is purposely made off-center as in
The handle housing 10 end of the swivel handle 22 having a pin shaft 208 going through the opposite flat sides of the swivel handle 22 and running at a right angle to the shaft 139 and the pin shaft 208 is housing to the retainer pin 66 and the retainer pin 66 is contacting the wider end of the detent pin 33 inside the swivel handle 22 and the retainer pin 66 being longer than the width of the swivel handle 22 leaves the ends of the retainer pin 66 to protrude out of both sides of the swivel handle 22.
The shaft 139 running off-center length-wise through the swivel handle 22 comprises a single two-step shaft, the smaller diameter of the shaft being the longer and the larger diameter of the shaft being shorter. The shorter and wider end of the shaft 139 being and exiting at the handle housing 10 end of the swivel handle 22 and the smaller diameter end of the shaft being and exiting at the lip end of the swivel handle 22 and the detent pin 33 along with the normally expanded compression spring 55 is inserted into the shaft 139, found in the swivel handle 22. And thus inserted, the end-cap 44 is connected by any of several conventional means to the smaller diameter end of the detent pin 33 located protruding out at the lip-end of the swivel handle 22 and the end-cap 44 prevents the detent pin 33 from springing out of the shaft 139 located in the swivel handle 22. The detent pin 33 thus being trapped inside the swivel handle 22 by the end-cap 44 will have the larger rounded end of the detent pin 33 protruding out of the handle housing 10 end of the swivel handle 22 by approximately 5/16 to ⅜ of an inch.
By grasping and pulling up on the end-cap 44 and the detent pin 33 compressing the normally expanded compression spring 55 will draw the larger protruding end of the detent pin 33 inside the shaft 139 located in the swivel handle 22.
Upon releasing the end-cap 44 and because the detent pin 33 is under constant pressure from the normally expanded compression spring 55, the detent pin 33 will return again to its normal protruding position which is more or less 5/16 to ⅜ inch outside the handle housing 10 end of the swivel handle 22.
The handle housing 10′ comprises a hollow housing contoured to accommodate the entirely assembled components
At one end-wall of the handle housing 10 is the end retainer hole 88 for the insertion (more or less) of ¼ to 5/16 of an inch of the round end of the detent pin 33 protruding from the handle housing 10 end of the swivel handle 22 when the swivel handle 22 is dropped down (laying) inside the handle housing 10.
Slightly off center, on the floor of the handle housing 10, is the center retainer hole 98 needed for the round end of the detent pin 33 protruding from the handle housing 10 end of the swivel handle 22 to insert (approximately ¼ to 5/16 of an inch) when the swivel handle 22 is open outside (perpendicular) to the handle housing 10.
Along the two opposite long-walls of the handle housing 10 are two long L shaped slide members 112 running parallel inside the handle housing 10. After the swivel handle 22 and its components are entirely assembled and joined with the accommodating handle housing 10 the two protruding ends of the retainer pin 66 located at the handle housing 10 end of the swivel handle 22 should be seated and respectively riding in each one of the two slide members 112.
And with the decision to open the swivel handle 22 to its perpendicular position outside the handle housing 10 each of the two protruding ends of the retainer pin 66 will slide along the two slide-members 112. And when the swivel handle 22 is fully open (perpendicular) to the handle housing 10 the two protruding ends of the retainer pin 66 will respectively be forced up into the two short vertical grooves of the L shaped slide members 112 by means of the compression spring 55 inside the shaft 139 putting constant pressure on the detent pin 33, and the protruding end of the detent pin 33 that extends outside the handle housing 10 end of the swivel handle 22 puts counter pressure against the center retainer hole 98 located on the floor of the handle housing 10, and the two protruding ends of the retainer pin 66 having thus been seated in the short ends of the two L shaped slide-members 112 and the protruding end of the detent pin 33 forced by the compression spring 55 being inserted into the center retainer hole 98 located on the floor of the handle housing 10 will naturally lock and hold firm the swivel handle 22 in the open (perpendicular) position.
Compartment 164 is located at the bottom of the handle housing 10 and is a vacant area separated by a dividing floor from the area that will house the swivel handle 22. Compartment 164 is contoured to house the release button 77 and existing manufacturers mechanisms and comprises the bottom length of the handle housing 10. And this vacant area 164 exits into, and is a part of two holes 181 inside the extensions located at either end of the handle housing 10. The holes 181 can be used to fasten the present invention to existing luggages or cart up-rights* using several commonly used methods. The compartment 164 may also be used to house the manufacturers existing up-right* release mechanisms of choice.
One end of the handle housing 10 has a cap notch 120 there to accommodate the end-cap 44 when the swivel handle 22 is closed (laying) down inside the handle housing 10. A lip-notch 119 located at the same end of the handle housing 10 accommodates the end lip contour of the swivel handle 22 when the swivel handle 22 is closed (laying) inside the handle housing 10.
Two extensions both a part of the handle housing 10 located at each end on the handle, housing 10 and the holes 181 located inside these extensions are used to attach manufacturers existing luggage up-rights* to the present invention by any of several means—these two handle housing 10 extensions should be at approximately 50 to 60 degrees angle to the horizontal plane of the handle housing 10 in order to maintain a parallel to the floor, perpendicular, swivel handle 22 while pulling the wheeled apparatus and maintaining the ergonomic position of the users hand. Different angles on the handle housing 10 extensions may be desired for different users and different uses of the current invention. Although the present invention is presented as a wheeled luggage and cart handle, the present invention can easily be applied to many situations not referred to in the application of the present invention and any such use or application still applies to the claim.
*The term “up-rights” references the two existing manufacturers poles or rails that attach to a luggage handle and used to tote a wheeled apparatus. These “up-rights” traditionally are collapsed along with the handle down inside the luggage for easier storage and are only referenced for clarity and are not part of the present invention.
Number | Date | Country | |
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61210644 | Mar 2009 | US |