Browse Prior Art Database

Molded Lever With Integral Bail Cam

IP.com Disclosure Number: IPCOM000046596D
Original Publication Date: 1983-Aug-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 2 page(s) / 65K

Publishing Venue

IBM

Related People

Billman, JW: AUTHOR [+3]

Abstract

Shown above in Fig. 1 is a load lever 10 for a hard cartridge diskette drive. In addition, the elements in the drive actuated by the load lever are also shown. Load lever 10, as it pivots about axis 12, lowers collet 14 into spindle 16 clamping a flexible disk (not shown) to spindle 16, lowers head pad arm 18 so that the flexible disk is held against a recording head (not shown) and, finally, allows probe 20, which is spring-biased to rotate counterclockwise, to move upward, activating a disk-cleaning pad in the diskette cartridge (not shown). Lever 10 is molded as a single piece of plastic and given minimal thickness so as to reduce its cost and weight. Fig. 2 is a side view of lever 10 illustrating a low friction protrusion 22 and a diskette cartridge camming surface 24.

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Molded Lever With Integral Bail Cam

Shown above in Fig. 1 is a load lever 10 for a hard cartridge diskette drive. In addition, the elements in the drive actuated by the load lever are also shown. Load lever 10, as it pivots about axis 12, lowers collet 14 into spindle 16 clamping a flexible disk (not shown) to spindle 16, lowers head pad arm 18 so that the flexible disk is held against a recording head (not shown) and, finally, allows probe 20, which is spring-biased to rotate counterclockwise, to move upward, activating a disk-cleaning pad in the diskette cartridge (not shown). Lever 10 is molded as a single piece of plastic and given minimal thickness so as to reduce its cost and weight. Fig. 2 is a side view of lever 10 illustrating a low friction protrusion 22 and a diskette cartridge camming surface 24. Protrusion 22 slides easily on metal spring 26 in Fig. 1, to lower collet 14. Cam surface 24 assists the insertion of a cartridge into the diskette drive if it is not fully inserted by the operator. In addition to protrusion 22 and cam surface 24 in Fig. 2, other significant cam surfaces of the lever are surfaces 28 and 30 shown in Fig. 1. Cam surface 28, as lever 10 pivots counterclockwise, allows spring end 32 to lower pad arm 18. Cam surface 30, as lever 10 rotates counterclockwise, allows probe arm 20 to rotate counterclockwise. The weight and cost of the molded lever are reduced by molding indentations, such as those shown at 34 and 36, into the lever. T...