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US 5,915,810 AGranted
Telescoping measuring stick with air damped closure and frictional locking
OwnerBruce Cameroninventor
Life of this patent
Estimating the term…
Abstract
A fixed length telescoping measuring stick that is self supporting and includes an inner telescoping ruler and two-way level combination. A divided encasement comes together via an air-damped cushion provided by a controlled release air lock that is automatically effective to protect the user. This air cushion damper is in combination with a friction position locking knob for either right or left handed users.
Claims23
A self supporting measuring stick, said stick comprising;
- a hollow rectangular outer casing divided into a cap and a base section, with said cap section, upon opening, being slidable relative to said base section;
- an inner telescoping rule member connected to said cap section and slidably fitted into said base section so as to form a column of air within the base section when said stick is opened;
- graduated rule markings on said inner rule for providing a measurement;
- and
- an air cushion damper formed in said base section for slow air release of said column of air for a damped closure of said top cap and connected inner rule as said cap and base sections are telescopically brought together in a closed condition.
2 more elements
A method of measuring several diverse types of measurements by a self-supporting measuring stick, said method comprising the steps of;
- encasing a double-sided inner rule within a hollow rectangular outer casing that is divided into an upper cap casing section that is slidable relative to a lower base casing section;
- connecting to said cap section an inner telescoping rule member that is slidably fitted into said base section, which fit tends to contain a quantity of air in the base casing;
- and
- forming, upon stick closure, an air cushion which bleeds away said contained air in such a manner that the inner rule slowly descends into said base section.
1 more element
Dependencies are inferred from the claim text.