The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 30, 1980
Filed:
Sep. 09, 1977
Howard Langlie, Ellendale, MN (US);
Albert T Berg, Jr, Ellendale, MN (US);
Other;
Abstract
The hand tool in the exemplary situation constitutes a plastic rake head and a readily removable wooden handle. To assure retention of the handle, a chordal groove or transverse notch is provided near one end thereof, and the sleeve or socket portion of the rake into which the end of the handle is inserted is provided with a latch mechanism which includes a resilient tongue on the free end of which is carried a dog biased into the groove or notch through an opening in the sleeve so as to releasably latch the handle to the rake head. To prevent twisting of the handle, the bore of the sleeve is formed with a longitudinal key and a keyway is formed in the end portion of the wooden handle. The bore or socket curves inwardly at two angularly spaced locations, one to either side of the longitudinal key, to form resilient ribs having sawtooth splines thereon engageable with the inserted end portion of the handle, there being a slit near one end of such rib so that the ribs can more readily be flexed outwardly to firmly hold handles of somewhat differing diameters, assisted by flat surface ribs located diametrically opposite the ribs with the splines thereon. Various tools of different sizes and types can be substituted one for the other; yet, only a single handle is required.