What is a Patent for Vented acoustic transmitters, and related techniques or systems
Search Patent for Vented acoustic transmitters, and related techniques or systems
Field of the Invention
The present invention pertains to the reproduction of sound in the low frequency region. In particular, it is it is a smaller method of constructing what is commonly known as a loudspeaker with transmission line.
Description of the Related Art
Wireless technologies such as Bluetooth have seen a significant rise in the number of wireless portable speakers. However, the sound quality of a majority of these systems, particularly in the low frequency range, leaves much to be wanted. Subwoofers specifically designed for low-frequency sound require large-coned, heavy boxes and large speakers. In order to produce high-quality low-frequency sounds, a large and heavy speaker system is typically required.
In this regard it is necessary for a compact, light weight portable system of speakers that does not sacrifice sound quality in the low-frequency range.
It is , therefore, an aim of this invention to provide a light-weight and compact speaker system that produces good sound quality while minimizing the negative effect of group delay.
These objects are met with the invention of today, which provides an extremely low-frequency spiral guide inside the portable system of speakers. The new technique has the same high-quality sound as traditional transmission line speakers but offers additional benefits. It makes a novel type of loudspeaker enclosure which is small and features improved sonic characteristics.
The spiral waveguide permits constant redirection of sound waves without sudden shifts in direction. This is unlike 90 degree or 180 degree folded lines which can create turbulent conditions. Because the spiral waves provide an effective and longer acoustic line and minimal pressure attenuation, it is more efficient. The result is a compact enclosure for a low-frequency transducer that provides greater efficiency as compared to a sealed box design while retaining its superior time domaincharacteristics and by a reduction in back EMF (an undesirable by-product present in all moving coil transducers.)
The cabinet’s size can be reduced by its compact design and the large taper ratio of the spiral waveguide. It’s comparable in size with many enclosures for loudspeakers. The bracing action of the inner spiral allows for smaller material to be used to create bigger sides. This eliminates unwanted resonances that result from enclosure excitation pressures. This design is able to achieve the same low frequency rolloff rate similar to a sealed-box design however, it does not cause excessive delay in the group. This design is similar to port speakers in that it achieves greater efficiency and a longer low-frequency output. However, the flow-resistive nature spiral unlike a straight port tube, helps to reduce the negative consequences of infrasonic conductivity.
One preferred embodiment of the invention includes a low-frequency speaker that includes an enclosure that has an entrance, back and sidewall. A gap is cut in the enclosure’s front to allow for the installation of an audio speaker. A speaker for audio is fitted with a diaphragm, which generates front sound waves, which are transmitted outwardly through the diaphragm, and back sound waves which are transmitted to the enclosure by the diaphragm. A spiral waveguide is located inside the enclosure. The spiral waveguide is constructed with one end that is proximal to the speaker diaphragm for receiving the back sound waves. It extends upwards from that point in a spiral pattern to a second end which forms a low-frequency out port that is located in the sidewall.
The low-frequency loudspeaker could also include at least one (a plurality) speakers mounted in a corresponding one or more openings in a front-facing section of said sidewall. The exit port for the low-frequency terminus port can be found within the sidewall that faces upwards. It can be flared to facilitate an easy transition between high pressure sound waves as well as a listening area with the acoustic’s impedance of a different.
To control unwanted large panel resonances due to excitation pressure inside, the spiral waveguide may extend beyond the enclosure, and then be tied together at the back. Damping material can be affixed to the outer surface of the spiralwaveguide. In addition, fibrous damping materials may be located in the enclosure to create an acoustic viscosity that helps to control infrasonic cone motion and also improves the effectiveness of the guide.
The space at the front edge of the spiral waveguide could be adjusted to match the area of the diaphragm of the speaker at low frequencies. The ideal is that the internal space between the enclosure’s back and front is equal to +/-20% of a low frequency speaker piston.
Preferably, the spiral waveguide starts with a wide area between the first winding and next winding. This area narrows as winding progresses, to the point where the exit port is smaller areas.
Another alternative allows two speakers to be mounted behind each other in open spaces. This embodiment also includes the spiral waveguide, which consists of a primaryspiral waveguide with a length of 3.5 meters and a shorter secondary waveguide that is inserted between the windings in the primary spiral waveguide.
According to a further version of the invention one or more additional speakers can be placed in one or more openings in the rear of the speaker. The spiral waveguide in this embodiment may also acts as the sidewall ofthe enclosure. This embodiment of the enclosure may be egg-shaped. An egg-shaped enclosure can be placed in an upright position. This results in a longer waveguide, which reduces the tuning frequency and increases the performance of speakers. The egg-shaped enclosure should ideally be offset by 45 degrees.
The above and other items, features and advantages of the present invention will be evident from reading the drawings that follow and the an in-depth description of the most preferred embodiments of the invention.
Click here to view the patent on USPTO website.
Get Patents with PatentPC
What is a patent?
Patents are granted by the government to safeguard the invention. It gives the inventor the rights to develop, use and market the idea. Society benefits when new technology is introduced for sale. Benefits can be realized in directly, in that it may allow people to do previously impossible things. Or indirectly, due to the opportunities for economic growth (business growth and employment) which the invention provides.
Many drug companies and researchers at universities seek patent protection to protect their research and development. Patents may cover a physical or abstract product or process , or an approach or composition of materials that are new to the field. Patent protection has to be granted to any invention that is valuable or novel and is not yet known by other people in the same field.
Patents reward inventors who have commercially successful inventions. They provide a reason for inventors to invent. Small businesses and inventors are sure that they will earn an income from their investment in technology development through patents. This means they will be able to make a living by their work.
Companies that are able to:
Create and protect innovative products and services;
Enhance the value, popularity, and appeal of your products on the market
Make your brand stand out from others.
Access technical and business knowledge and information;
Avoid the danger of accidentally using third-party proprietary content, or losing important data, original outputs, or any other innovative output.
Patents effectively transform the inventor’s knowledge into a marketable asset which opens new opportunities for employment creation and business growth through joint ventures or licensing.
Investors involved in the development and commercialization of technology will find small companies with patent protection more appealing.
Patenting can generate fresh ideas and innovative inventions. This information could encourage innovation and may qualify to be protected by patents.
Patents can be used to prevent untrustworthy third parties from making money from the invention’s efforts.
The profits from technology patents that are successful and commercially viable could be used to fund technological research and development (R&D) and boost the likelihood of improved technology in the future.
It is possible to use intellectual property ownership to convince lenders and investors that your product has real commercial value. One patent that is powerful could lead to multiple financing opportunities. Patents as well as other IP assets are able to be used as collateral or security for debt financing. Investors are also able to view the patents you own to increase their company valuation. Forbes and others have noted that every patent could boost the value of your company by as much as $500,000 to $1 Million.
A well-thought-out business plan is essential for new businesses. It must be built on IP and explain how your product/service is distinctive. Additionally, investors will be impressed if you prove that your IP rights are secure or in progress of being secure and that they support your business plan.
It is vital to keep an invention secret before applying for patent protection. The public disclosure of an invention prior to its filing frequently degrade its originality and render it patent-infringing. Disclosures that are filed prior to filing, like for investors, test marketing, or other business partners, is best done following the signing of a confidentiality agreement.
There are many kinds of patents, and understanding these is vital to safeguard your invention. Utility patents are for the development of new methods and machines. Design patents cover ornamental designs. Patents for utility are the most effective because they shield the owner from copycats as well as other competitors. Patents for utility are usually issued to improve or modify existing inventions. Utility patents also cover enhancements and modifications to existing inventions. For instance, a process patent will be able to cover actions or methods for performing one specific thing, while chemical compositions will comprise a mixture of ingredients.
How long will a patent last? While utility patents last for 20 years from the date of their earliest filing, they may be extended by delay at the Patent Office.
Are you looking to patent your ideas? As patents are only granted to applicants who file first You must start filing quickly. Call a patent attorney at PatentPC to patent your idea now!
When drafting an application for patents it is recommended to conduct a patent search, as the search can provide an insight into the other applicants’ thoughts. This allows you to restrict the scope of your invention. In addition, you can discover the latest art in your field of innovation. This will help you to comprehend the scope of your invention as well as prepare you for filing your patent application.
How to Search for Patents
The first step in obtaining your patent is to perform a patent search. You can do a google patent search or do a USPTO search. Once the patent application is submitted, the product that is subject to the application may be referred to as patent-pending and you will be able to locate the patent application on a public pair. When the patent office has endorsed the application, you can conduct a patent number search to find the issued patent and your product is now patented. In addition to the USPTO search engine, you can use other search engines, such as espacenet as described below. A patent lawyer or patent attorney can assist you with the process. In the US Patents are granted by the US patent and trademark office or by the United States patent and trademark office, which is also responsible for examining trademark applications.
Are you interested in similar patents? These are the steps:
1. Brainstorm terms that describe your invention based upon the purpose, composition and usage.
Write down a short and precise description of the invention. Avoid using generic terms like “device”, “process,” or “system”. Think about synonyms for the terms you chose initially. Next, take note of crucial technical terms and key words.
Utilize the following questions to help you determine the keywords or concepts.
- What is the objective of the invention Is it a utilitarian device or an ornamental design?
- Does the invention consist of a method of creating something, or performing a function? Is it an item?
- What is the composition of the invention? What is the physical structure of the invention?
- What’s the purpose of this invention?
- What are the technical words and terms that describe the characteristics of an invention? To help you find the correct terms, consult an online dictionary of technical terms.
2. Use these terms to find relevant Cooperative Patent Classifications at the Classification Text Search Tool. To determine the best classification to your invention, go through the class scheme of the classification (class schedules). If you don’t get any results using the Classification Text Search, you might consider substituting your words that describe your invention using synonyms.
3. Review 3. Review the CPC Classification Definition to verify the relevancy of the CPC classification you’ve located. If the chosen classification includes a blue square with the letter “D” on its left, the hyperlink will take you to a CPC description of the classification. CPC classification definitions can aid you in determining the classification’s purpose so that you can choose the one that is most appropriate. Additionally they can provide research tips and other suggestions which could be helpful for further investigation.
4. Retrieve patent documents with the CPC classification from the Patents Full-Text and Image Database. By focusing on abstracts and representative drawings, you can narrow down your search to the relevant patent documents.
5. This selection of patent publication is the most appropriate to examine for similarities to your invention. Take note of the specifications and claims. Refer to the applicant and patent examiner for additional patents.
6. It is possible to find published patent applications that match the CPC classification you chose in Step 3. You can use the same strategy of searching as in Step 4. You can narrow your results to the most pertinent patent application by examining the abstract and representative drawings that appear on each page. After that, take a close look at the patent applications published, paying particular attention to the claims and additional drawings.
7. You can search for additional US patent publications using keyword searching in the AppFT and PatFT databases, and the classification search of patents that are that are not issued by the United States per below. You can also utilize web search engines to search for non-patent-related patent disclosures in literature about inventions. For example:
- Add keywords to your search. Keyword searches may turn up documents that are not well-categorized or have missed classifications during Step 2. For example, US patent examiners often supplement their classification searches with keyword searches. Think about the use of technical engineering terminology rather than everyday words.
- Search for foreign patents using the CPC classification. Then, re-run the search using international patent office search engines such as Espacenet, the European Patent Office’s worldwide patent publication database of over 130 million patent publications. Other national databases include:
- European Patent Office (EPO) provides esp@cenet to access a network of Europe’s patent databases with access to machine translation of European patents.
- Japan Patent Office (JPO) – with access to machine translations of Japanese patents.
- World Intellectual Property Organization (WIPO) offers PATENTSCOPE with a full-text search of published international patent applications and machine translations for some documents, as well as a list of international patent databases.
- Korean Intellectual Property Rights Information Service (KIPRIS)
- State Intellectual Property Office (SIPO) with machine translation of Chinese patents.
- Other International Intellectual Property Offices with online patent databases include Australia, Canada, Denmark, Finland, France, Germany, Great Britain, India, Israel, Netherlands, Norway, Sweden, Switzerland, and Taiwan.
- Search non-patent literature. Inventions can be made public in many non-patent publications. It is recommended that you search journals, books, websites, technical catalogs, conference proceedings, and other print and electronic publications.
To review your search, you can hire a registered patent attorney to assist. A preliminary search will help one better prepare to talk about their invention and other related inventions with a professional patent attorney. In addition, the attorney will not spend too much time or money on patenting basics.