The following operators can be used to better focus your queries.
( ) , AND, OR, NOT, W/#
? single char wildcard, not at start
* multi char wildcard, not at start
(Cat? OR feline) AND NOT dog?
Cat? W/5 behavior
(Cat? OR feline) AND traits
Cat AND charact*
This guide provides a more detailed description of the syntax that is supported along with examples.
This search box also supports the look-up of an IP.com Digital Signature (also referred to as Fingerprint); enter the 72-, 48-, or 32-character code to retrieve details of the associated file or submission.
Concept Search - What can I type?
For a concept search, you can enter phrases, sentences, or full paragraphs in English. For example, copy and paste the abstract of a patent application or paragraphs from an article.
Concept search eliminates the need for complex Boolean syntax to inform retrieval. Our Semantic Gist engine uses advanced cognitive semantic analysis to extract the meaning of data. This reduces the chances of missing valuable information, that may result from traditional keyword searching.
A damping design increases rotational stability for rotary motion mechanical devices which have an oscillating or unstable axis. The device is constructed and works in the following manner.
English (United States)
This text was extracted from a PDF file.
100% of the total text.
Page 1 of 1
Rotary Damping Device
A damping design increases rotational stability for rotary motion mechanical
devices which have an oscillating or unstable axis. The device is constructed
and works in the following manner.
As seen in the drawing, the device consists of a flexible, circular tube 1 which
is filled with oil. The tube 1 terminates on both ends to an adjustable flow control
valve 2. The tube 1 is supported by a housing 3.
A rotor 4 has a pair of cylindrically shaped roller bearings 5 which impinge
against tube 1. When rotor 4 rotates, the bearings 5 drive the oil in tube 1 in a
circular fashion past the flow control valve 2, establishing the damping action.
The rotor 4 is driven by the mechanism to be damped.