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 buckling spring torsional snap actuator is shown in U.S. Patent 4,118,611. The drawing shows a schematic cross section taken through one switch actuator of this type.
English (United States)
This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
100% of the total text.
Page 1 of 2
Buckling Torsional Snap Actuator
A buckling spring torsional snap actuator is shown in U.S.
Patent 4,118,611. The drawing shows a schematic cross section taken
through one switch actuator of this type.
A potential failure condition exists with some mechanisms of this type if, due
to variations in tolerances, the buckling spring 1 does not exert sufficient force
about the fulcrum point 2 to cause the rocking plate 3 to rotate clockwise. A
small projection 4 in the shape of a ramp has been added to the buckling spring
mechanism by attaching a projection to the pivot plate 3, as shown. When spring
1 buckles, as shown in the phantom lines, the knee of the spring will abut the
surface 5 of the force transferring projection 4. This will prevent the spring from
buckling further and will increase the forces applied against the pivot plate 3 in
the clockwise direction, thus assuring a positive and reliable pivot action.
Page 2 of 2
[This page contains 1 picture or other non-text object]