Patent Application
20210245991
The present invention relates to spool apparatuses, and in particular, to spool apparatuses for use in tightening and loosening cables and like elongated drawing or securing members.
Various means are known in the art for securing tightening cables and like elongated drawing or securing members. However, such means are not heretofore known to have convenient bidirectional operation or to have a positive loosening ability. Examples of spool apparatuses are disclosed in the following list of US patents and applications, all of which are expressly incorporated herein by reference: U.S. Pat. No. 8,434,200 to Chen, U.S. Pat. No. 8,468,657 to Soderberg, U.S. Pat. No. 9,138,030 to Soderberg, U.S. Pat. No. 9,259,056 to Soderberg, U.S. Pat. No. 10,123,589 to Soderberg, U.S. Pat. No. 10,863,796 to Soderberg, 20100139057 to Soderberg, 20130014359 to Chen, 20130277485 to Soderberg, 20150101160 to Soderberg, 20160198803 to Soderberg, 20190069641 to Soderberg, 20200179172 to Johnson, and 20200390196 to Manzato.
The present invention is a bidirectional spool apparatus (BSA) and method of use. The BSA comprises a spool apparatus having a plurality of spools, a plurality of cables (or like elongated drawing or securing members), with each cable threaded or wound around a respective spool, and an adjustment knob. The BSA is adapted such that when in a first mode, rotation of the adjustment knob causes a corresponding rotation of a first spool in a tightening direction and a tightening (reduced payout) of a first cable but allows a second cable to rotate substantially freely (but for friction of the apparatus), and such that when in a second mode, rotation of the adjustment knob causes a corresponding rotation of a second spool in a tightening direction and a tightening (reduced payout) of a second cable but allows a first cable to rotate substantially freely (but for friction of the apparatus). The BSA is further adapted such that switching of the BSA from a first mode to a second mode and vice versa is accomplished by pulling the adjustment knob out a distance along the rotational axis of the adjustment knob and by pushing the adjustment knob in a distance along the rotational axis of the adjustment knob.
In order that the advantages of the invention will be readily understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings. Understanding that these drawings depict only typical embodiments of the invention and are not therefore to be considered to be limiting of its scope, the invention will be described and explained with additional specificity and detail through the use of the accompanying drawings, in which:
Reference throughout this specification to “one embodiment,” “an embodiment,” or similar language means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, appearances of the phrases “in one embodiment,” “in an embodiment,” and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment.
Furthermore, the described features, structures, or characteristics of the invention may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are included to provide a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the invention can be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the invention.
In order to facilitate the understanding of the present invention in reviewing the drawings accompanying the specification, a feature table is provided below. It is noted that like features are like numbered throughout all of the figures.
Referring now to the drawings, a first embodiment of bidirectional spool apparatus (BSA) 10 comprises housing 20, first geared spool 40, second geared spool 50, drive gear 60, cover 70, adjustment knob 90, knob fastener 110, a plurality of housing fasteners 112, and cable 114. Housing 20 preferably defines a plastic injection molded housing having floor 22, wall 24, a first cable access hole 26, a second cable access hole 27, raised land 28, first spool spindle 30, second spool spindle 32, gear spindle 34, and a plurality of fastening posts 36. First geared spool 40 preferably defines a plastic injection molded spool having spindle hole 42, and a plurality of gear teeth 44. Second geared spool 50 preferably defines a plastic injection molded spool having spindle hole 52, and a plurality of gear teeth 54. Drive gear 60 preferably defines a plastic injection drive gear having a plurality of gear teeth 62, and hexagonal shaped hex drive 64. Cover 70 preferably defines a plastic injection molded cover having deck 72, first spool hole 74, second spool hole 76, drive gear hole 78, collar 80, a plurality of collar teeth 82, and a plurality of fastening holes 84. Adjustment knob 90 preferably defines a plastic injection molded adjustment knob having a plurality of knurls 92, collar 94, hexagonal shaped hex drive 96, a fastening hole 97, a plurality of cam openings 98, and a plurality of cams 100, each cam 100 defining a flexible cantilevered flange cam, with each cam 100 having a cam tooth 102. Knob fastener 110, housing fasteners 112 preferably define conventional threaded fasteners. Cable 114 and cable 115 define conventional, preferably closed loop, cables such as cables that can secure a breath deflector (e.g. the breath deflector of US 20200179172), a shoe, or a boot.
BSA 10 is assembled such that first geared spool 40 is rotatably positioned on first spool spindle 30, second geared spool 50 is rotatably positioned on second spool spindle 32, and drive gear 60 is rotatably positioned on gear spindle 34. Cable 114 is wound around first geared spool 40, passed through cable access hole 26, and connected to an objected to be adjustably secured (e.g. the breath deflector of US 20200179172). Cable 115 is wound around second geared spool 50, passed through cable access hole 27, and connected to an objected to be adjustably secured (e.g. the breath deflector of US 20200179172). Cover 70 is then placed on housing 20 such that first spool spindle 30 is positioned within first spool hole 74, second spool spindle 32 is positioned within second spool hole 76, and drive gear 60 is positioned within drive gear hole 78. Adjustment knob 90 is then rotatably positioned on cover 70 such that collar 94 is slidably positioned within collar 80, hex drive 64 is engaged with hex drive 96, and cam teeth 102 are meshed with collar teeth 82. Fastener 110 is threaded through fastening hole 97 and into drive gear 60 such that drive gear 60 is secured to adjustment knob 90 such that rotation of adjustment knob 90 causes a corresponding rotation of drive gear 60. Fasteners 112 are passed through fastening holes 84 and securingly threaded into fastening posts 36.
In practice, in order to tighten the object (e.g. the breath deflector of US 20200179172), a user pushes adjustment knob 90 inward along the rotational axis of adjustment knob 90 causing teeth 62 of drive gear 60 to mesh with gear teeth 44 of first geared spool 40 and causing BSA 10 to enter a tightening mode. In the tightening mode, first geared spool 40 is in a drivable configuration and second geared spool 50 is in a freely rotatable (but for the friction of the apparatus) configuration. A user then rotates adjustment knob 90. The rotation of adjustment knob 90 causes first geared spool 40 to wind and tighten (reduce the payout of) cable 114 while allowing second geared spool 50 to rotate substantially freely and to allow cable 115 to loosen (increase the payout of), causing the object to be moved in a tightening direction. In order to loosen the object (e.g. the breath deflector of US 20200179172), a user pulls adjustment knob 90 outward along the rotational axis of adjustment knob 90 causing teeth 62 of drive gear 60 to mesh with gear teeth 54 of second geared spool 50 and causing BSA 10 to enter a loosening mode. In the loosening mode, first geared spool 40 is in a freely rotatable (but for the friction of the apparatus) configuration and second geared spool 50 is in a drivable configuration. A user then rotates adjustment knob 90. This rotation of adjustment knob 90 causes second geared spool 50 to wind and tighten (reduce the payout of) cable 115 while allowing first geared spool 40 to rotate substantially freely and to allow cable 114 to loosen (increase the payout of), causing the object to be moved in a loosening direction. It is noted that when adjustment knob 90 is rotated, cam teeth 102 of cams 100 sequentially flexingly engage and disengage collar teeth 82 providing for tactile feedback to a user who rotates adjustment knob 90 and causing adjustment knob 90 to remain in a fixed rotational adjustment position in the absence of a user applied rotational load on adjustment knob 90.
The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The described embodiments are to be considered in all respects only as illustrative and not restrictive. The scope of the invention is, therefore, indicated by the appended claims rather than by the foregoing description. All changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.
