Telescoping rotary latch and manufacture thereof
OwnerLazzaro A. Fattoriinventor
Life of this patent
Estimating the term…
Abstract
A rotary latch has an upstanding finger grip for rotating the latch to open and closed positions normally located in a well, recessed below a surface of a container. The latch is formed as a two-piece combination, the finger grip terminating a telescoping inner member adapted to rotate with an outer member which provides the latching means and to be extended to position the finger grip above the container surface facilitating rotation of the latch. The two pieces are molded as an integral unit in tandem axial alignment interconnected by a pair of webs, which, by axial compression of the molded unit, are severed for automatic prealigned telescoping assembly and operative engagement of the inner and outer members into the two-piece latch.
Claims12
In a latching device for fastening a first component having a surface and a well recessed therefrom to a second component having a slot with a center enlargement in registered alignment with said well, a two-piece rotary latch for securing for rotation in the bottom of said well and having means for projecting through said bottom and through said slot and center enlargement adapted to engage borders of said center enlargement on rotation of the rotary latch to fasten said components together, said rotary latch comprising an inner member mounted to turn with and telescope into an axial bore of an outer member, said border engaging means being integrally formed on said outer member as radially projecting latching elements said inner member terminating in a finger grip for rotating said latch, said finger grip normally being recessed from said surface when in fully retracted position and projecting above said surface for accessibility when in extended position, and snap-in means having elements integrally formed with said members coacting between the outer member bore and said inner member retaining the latter in said fuly retracted position against accidental extension of the inner member and projection of said finger grip above said surface when the finger grip is not in use.
A two part structure molded of resinous plastic material as an integral unitary structure, a first part comprising an outer tubular member having a non-circular axial bore formed as an upper portion and an enlarged lower bore portion, a second part comprising an intermediate shank having an overall cross-section sized to slidingly fit said upper bore portion and an enlarged lower end having a cross-section sized to slidingly fit said lower enlarged bore portion, said two parts being connected in tandem axial alignment by a pair of webs extending between an upper end of said first part and said second part enlarged lower end, said webs and adjacent portions of said two parts being constructed and arranged for simultaneous disjoining and telescoping into an assembled condition by axial compression applied to opposite ends of said integral unitary structure which severs said webs and compresses said enlarged lower end to fit and pass through said bore portion and expand to normal size in said enlarged lower bore portion.
Dependencies are inferred from the claim text.