Home

shows the Auto Hammock Rocker attachment portion.

Waterproof Oxford Dog Seat Covers Universal Car Rear Seat Protector Pad Pet Cat Dog Mat Hammock Black by Auto-living

$56.00


Auto hammock rocker - Drevitson, Kyle C.

The weight of the person on the hammock together with the spring constant of the spring provides a simple harmonic oscillating system with a well defined characteristic resonance frequency. If the periodic reversal frequency of the motor drive matches this characteristic resonance frequency, energy is progressively transferred from the geared motor to the rocking hammock and even a very small motor drive can power the rocking movement of the hammock. The geared motor fully executes the periodic reversals turning the geared motor shaft through a certain fixed angle and reverses the shaft through the same angle. Even though the hammock is initially stationary and slowly acquires the rocking motion, the periodicity of the characteristic spring-person weight combination is still the same. The initial angular amplitude of the hammock is small. A flexible connection is established between the hammock carrying the person and the spring. The number of ropes that connect the hammock to the arm of the oscillating portion of the Auto Hammock Rocker accommodate the progressively decreasing difference in angular movement of the geared motor shaft and the hammock.

The weight of the person on the hammock together with the spring constant of the spring provides a simple harmonic oscillating system with a well defined characteristic resonance frequency. If the periodic reversal frequency of the motor drive matches this characteristic resonance frequency, energy is progressively transferred from the geared motor to the rocking hammock and even a very small motor drive can power the rocking movement of the hammock. The geared motor fully executes the periodic reversals turning the geared motor shaft through a certain fixed angle and reverses the shaft through the same angle. Even though the hammock is initially stationary and slowly acquires the rocking motion, the periodicity of the characteristic spring-person weight combination is still the same. The initial angular amplitude of the hammock is small. A flexible connection is established between the hammock carrying the person and the spring. The number of ropes that connect the hammock to the arm of the oscillating portion of the Auto Hammock Rocker accommodate the progressively decreasing difference in angular movement of the geared motor shaft and the hammock.

Auto hammock swinging device - YouTube

Auto hammock swinging device banjobob333

This invention relates to an Auto Hammock Rocker, which gently rocks a hammock occupant as soon as the hammock becomes occupied, thereby relaxing the occupant. A commonly known hammock is firmly attached to a container that is in turn firmly attached to a post or a tree or other stationary objects. The container has a top portion, a bottom portion and at least one side portion defining an internal compartment. The container has more than one side portion and may completely surround the internal compartment, if so desired. The internal compartment houses a periodically reversing geared motor, which may be powered by a battery or house current. The shaft of the geared motor rotates at a slow speed, delivering a high level of torque. The shaft of the geared motor is integrally connected to a torsional spring. The other end of the spring is connected to an arm which, in turn, is connected to the conventional hammock with a pressure switch. The torsional spring and the arm are referred to as the oscillating portion of the Auto Hammock Rocker. When a person lies on the hammock, the pressure switch is activated and the geared motor is thereby powered, creating the rocking motion. The contact pressure switch is generally not required to carry the entire weight of the person on the hammock. It is only a sensor that closes when an occupant's weight, or portion thereof, is applied to the hammock.

FIG. 1is a lateral view of the Auto Hammock Rocker, shown generally at 20, configured with a hammock. Hammock 11 has a conventional design, comprising a netted support portion 16 and two roped ends 17and 17integrally attached to hammock attachments 15and 15. Generally, as shown herein, hammock attachments 15and 15are provided as rings, and are utilized to attach the right end of the hammock 11 to a stationary object 12. The left end of the hammock is attached to a second stationary object through Auto Hammock Rocker 20. Herein, hammock attachment 15is attached to chain support member 14. Chain support member 14 is connected to the stationary object 12 at attachment point 13. The Auto Hammock Rocker is directly attached to hammock at attachment 15. It comprises a container 21 having a geared motor 24 located therein. Geared motor 24 is connected to an oscillating portion 22 adapted to be connected to the hammock 11. Oscillating portion 22 further comprises an arm member 23. The Auto Hammock Rocker 20 includes an attachment portion 33 extending from the container 21, which is adapted to attach the container 21 directly to an object 12 at attachment point 13.