Other

The Eastern Company

Richard H Schulz

Michael O Misner

Timothy P Laabs

Elbert M Spencer

Train car

Train engine

Collapsible scaffolding extension

Collapsible scaffolding

A difficult-to-duplicate key for operating a rotatable plug and cylinder lock has an imaginary center axis that extends along the length of the key at a location situated between opposed, relatively narrow edge surfaces, and centered between opposed, relatively wide side surfaces. The edge and side surfaces cooperate to define a key of generally rectangular cross section. First, second and third rows of concave recesses are formed in and extend lengthwise along the side and edge surfaces of the key for receiving rounded inner end regions of pin tumblers of the plug and cylinder lock when the key is inserted to an operating position in a keyway of the lock for positioning the tumblers to permit the plug to be rotated relative to the cylinder. The recesses of the first, second and third rows extend along first, second and third sets of recess axes that extend in first, second and third planes, respectively, that radiate from the imaginary center axis. Non-standard angular relationships of the first, second and third planes are utilized to orient the first, second and third sets of axes in a non-standard, non-symmetrical and non-aligned manner that causes the recesses of at least one (preferably two) of the first, second and third rows to be of a non-circular shape that is difficult to 'read' to determine the key's recess axis orientation. The use of difficult to 'read' recess shapes together with the use of non-standard recess axis orientations renders key duplication difficult.

Key for rotary plug and cylinder lock, and method of forming the key

A key operated rotatable plug and cylinder define pin-receiving holes arranged in first, second and third rows that extend in first, second and third planes, respectively that radiate from a common center axis that extends substantially centrally through a plug-defined keyway. A key of generally rectangular cross-section is insertable into the keyway to bring recesses that are formed in its two relatively flat side surfaces and in one of its narrow edge surfaces into alignment with the pin-receiving holes so that inner ends of tumbler pins that are carried within the holes are received in the key-defined recesses to position the tumbler pins to permit plug rotation relative to the cylinder. The first plane extends from the center axis through the holes of the first row, and parallels the opposed, relatively flat side surfaces of a keyway-inserted key. The second and third planes extend from the center axis through the holes of the second and third rows, respectively, and position the second and third rows of pins so that they are inclined relative to the first plane at angles 1) that are unequal, 2) that do not cause the second and third planes to extend within a common plane, and 3) that are separately chosen from a set of values that reside between about seventy five and about one hundred five degrees, with values of ninety and one hundred five degrees being avoided in the selection of at least one, preferably both, of these angles.

Key operated rotary plug and cylinder lock

A subsidiary bench top apparatus for a work bench or the like comprises a standing section secured to laterally extended brackets at opposing distal ends, four support members joined respectively to the brackets at one end and connected in pairs at the opposing distal end by medially disposed bolt and nut assemblies for fastening onto a work bench with lateral variation of the standing section respective of the work bench.

Subsidiary bench top

A stand for supporting bags including a base, a flexible stanchion, and a bag-engaging collar which is generally C-shaped and capable of being pinched together for insertion into a bag to be supported, loading of such a bag progressively bending the stanchion, the collar, stanchion and base maintaining such a bag in column to prevent spillage and to allow easy removal of the collar upon springback of the stanchion when the collar is again pinched together.

Freezer bag supporting stand

An adjustable scaffold having a generally rectangular frame including a pair of clamp sections associated with one side of the frame and a first step section associated with the other side of the frame, pairs of legs pivotly mounted to the frame and said generally rectangular platform having vertically downwardly extending support arms complementary to the clamp sections to support the platform in an offset position closer to one side of the frame than the other, the platform being removable from the clamp sections and storable between the clamp sections and the first step section.

Growing community of inventors

Livermore, CA, United States of America

Richard H Schulz