The link you provided appears to be a public patent document hosted on FreepatentsOnline, which is an online database of patents. The specific patent you linked is US Patent 5,742,768.

As you mentioned, the content of this patent (and many others like it) can be accessed and viewed by anyone. Publicly available patent documents often contain detailed information about inventions, designs, processes, or software that have been patented.

Some key points to consider when looking at publicly available patents:

1.  **Public disclosure**: Patents are public records of innovative ideas, which means the details of the invention are made publicly available.
2.  **Non-confidential information**: The patent document itself is not confidential, and anyone can view it without needing a password or other authentication.
3.  **Copyrighted content**: Although the patent itself is public, some parts may be copyrighted, such as diagrams, images, or specific written descriptions that are owned by the patent holder.

You can use this resource to:

1.  Learn about inventions and innovations across various fields.
2.  Research potential competitors or market trends by analyzing their patents.
3.  Understand how others have approached solving particular problems in your field of interest.
4.  Explore existing solutions before developing a new invention yourself, possibly avoiding infringement issues.

When using publicly available patent documents like US Patent 5,742,768, keep in mind that the information is not confidential and can be accessed by anyone.