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.
Two over-center counterbalance structures are interconnected to a single engaging spring through appropriate linkages.
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
Dual Function Counterbalance
Two over-center counterbalance structures are interconnected to a single
engaging spring through appropriate linkages.
Cover 10 pivots around stationary shaft 11 at insert hole 12 between the
closed position shown and an over-center stop position at 13. Link 15 is coupled
to pivot arm 16 which is attached for rotation around hole 18 by means not
shown. Arm 16 is coupled to one end of spring 20.
Bracket member 25, which might be part of a module frame contained within
cover 10, pivots in an over-center relation around fixed shaft 26 via hole 27
between the position as shown and the over-center position against stop 28.
Cable 29 is coupled through slack adjustment means or turnbuckle 30 around
pulley 31, which pivots about fixed shaft 32. The other end of cable 29 is
attached to end 33 of spring 20.
By the structure shown, dual counterbalancing is provided through the use of
a single spring with minimum parts and assembly cost, a sensitive adjustment
capability and minimal space requirements.
Page 2 of 2
[This page contains 4 pictures or other non-text objects]