^ Docket No.: OG-22-341-WO ^ HEADPHONES BACKGROUND [0001] This disclosure relates to headphones. SUMMARY [0002] All examples and features mentioned below can be combined in any technically possible way. [0003] In one aspect, a headphone includes a headband and a yoke that is pivotably coupled to the headband. The yoke includes first and second yoke arms that each extend from a pivot point to respective distal ends. An earphone is pivotably coupled to the yoke. The earphone includes an earcup that defines first and second recesses for receiving the distal ends of the yoke arms. The earcup and the yoke are configured such that the distal ends of the yoke arms can be slid into the recesses in the earcup for assembly without elastic deformation of the yoke arms or the earcup. [0004] Implementations may include one of the following features, or any combination thereof. [0005] In some implementations, the distal end of the first yoke arm includes a threaded hole, and the headphone includes a fastener that passes through a first hole extending through the first recess and into the threaded hole to secure the earcup to the yoke. [0006] In certain implementations, the fastener is the only mechanical means to prevent separation of the yoke from the earcup. [0007] In some cases, the distal end of the second yoke arm includes a protrusion that is received in the second recess. The second yoke arm may include a rib that extends outward from the protrusion, ^ Docket No.: OG-22-341-WO ^ [0008] In certain cases, the second recess includes a pocket for receiving the rib on the protrusion. [0009] In some examples, the pocket is shaped to limit rotation of the earcup by defining hard stops for the rib. [0010] In some implementations, the second yoke arm includes a channel that extends through the protrusion. [0011] In certain implementations, the earcup includes a second hole that extends through the second recess and aligns with the channel to allow wiring to pass therethrough for powering the earphone. [0012] In some cases, the protrusion has a semi-circular cross-section with a channel that runs through it for accommodating wiring for powering the earphone. [0013] In certain cases, the earcup hides the channel. [0014] In some examples, the second yoke arm is free of any mechanical features to prevent separation of the second yoke arm from the second recess. [0015] In certain examples, the yoke also includes a first arcuate surface extending from the distal end of the first yoke arm to the distal end of the second yoke arm, the first surface facing toward the earcup and defining a channel to accommodate wiring for powering the earphone. [0016] In some implementations, the channel extends from a pivot point to the distal end of the second yoke arm. [0017] In certain implementations, the yoke is formed of a non-compliant material. [0018] In some cases, the yoke is formed of metal. ^ Docket No.: OG-22-341-WO ^ [0019] In certain cases, the first and second yoke arms include first and second protrusions, respectively, which engage the first and second recesses to provide a pivot axis about which the earcup can pivot relative to the yoke. [0020] In some examples, the first and second recesses are configured such that the first and second protrusions can be slid into the first and second recesses, respectively, without deformation of the yoke. BRIEF DESCRIPTION OF THE DRAWINGS [0021] Fig.1 is a front view of a pair of headphones. [0022] FIG.2 is a side view of the headphones of FIG.1. [0023] FIG.3 is a perspective view of a pivot mount from the headphones of FIG.1. [0024] FIG.4 is a perspective view showing a pivot mounted in the pivot mount of FIG. 3. [0025] FIGS.5 and 6 are perspective and cross-sectional side views, respectively, of the pivot and pivot mount of FIG.4 shown inserted into a slider of the headphones of FIG. 1. [0026] FIG.7 is a perspective view showing a pair of pivot mount caps for securing the pivot and pivot mount in the slider. [0027] FIG.8 is a perspective view showing the pair of pivot mount caps from FIG.7. [0028] FIG.9 is a detailed view showing a protruding portion of the pivot mount caps contacting a yoke of headphones. [0029] FIG.10A is a perspective view of a yoke from the headphones of FIG.1. [0030] FIG.10B is a detailed perspective view showing a top surface of the yoke from FIG.10A. ^ Docket No.: OG-22-341-WO ^ [0031] FIG.11 is a detailed perspective view showing attachment of the yoke of FIG. 10B to the pivot of FIG.4. [0032] FIG.12 is a perspective view showing the yoke of FIG.10B attached to an earcup of the headphones of FIG.1. [0033] FIG.13 is a detailed perspective view of an end portion of an arm of the yoke of FIG.10B. [0034] FIGS.14A and 14B are perspective views of an earcup of the headphones of FIG.1. [0035] Commonly labeled components in the FIGURES are considered to be substantially equivalent components for the purposes of illustration, and redundant discussion of those components is omitted for clarity. Numerical ranges and values described according to various implementations are merely examples of such ranges and values and are not intended to be limiting of those implementations. In some cases, the term “about” is used to modify values, and in these cases, can refer to that value +/- a margin of error, such as a measurement error, which may range from up to 1-5 percent. DETAILED DESCRIPTION [0036] FIG.1 shows headphones 100. Headphones 100 include headband 102 which includes flat tubular cushion assembly 104 that is constructed and arranged to be placed over the crown of the head of a person. Tubular sliders 106a and 106b (collectively “106”) support earphones 108a and 108b (collectively “108”). The sliders engage with cushion assembly 104 in a manner which allows the sliders to be moved in and out of the cushion assembly to adjust the overall length of the headband so that they headphones can sit comfortably on, in or over the ears of the wearer. This overall arrangement of headphones is known in the art. Also, in some cases a microphone (not shown) can be included so that the headphones can be used as a headset. Further, some headphones or headsets include only one earphone, in which case there may be only one slider. ^ Docket No.: OG-22-341-WO ^ [0037] Cushion assembly 104 is preferably generally tubular. This arrangement allows the sliders to be received within the volume on the inside of the tube and also allows wiring to pass along the length of the cushion assembly. Sliders 106a and 106b are located in part in this interior volume of the cushion assembly. Each slider has a proximal end 110a, 110b located in the cushion assembly (e.g., end 110a of slider 106a) and a distal end 112a, 112b (e.g., end 112a of slider 106a). Coupling members 114a and 114b (collectively “114”) are pivotably coupled to sliders 106. The coupling members each carry an earphone 108 (a/k/a “earpiece”) at their far ends. Earphones 108a and 108b are shown in FIG.1. Each of the earphones 108 includes an ear cushion 109 and an earcup 111 that supports an electro-acoustic transducer 113 (FIG.2). [0038] The sliders are preferably but not necessarily each generally hollow tubes with a generally flat exterior surface that lies closest to the head. In the example shown in the drawings, slider 106a has flat exterior surface 141 of lower half 140 of the slider tube. Pivot axis 50 that is defined by axle 130 lies below surface 141 and is generally parallel to surface 141. The sliders may have an oblong cross-sectional shape, such as a stadium (aka “racetrack”), oval or elliptical shape. [0039] An example of a coupling member 114b is shown in more detail in FIG.2. FIG.2 shows the left coupling member 114b. A mirror-image of the design would be used for the right coupling member 114a. Coupling member 114b comprises a yoke 116 with legs 118 and 120 that carry earphone 18. Earphone coupling members (a/k/a “first and second protrusions 1010 and 1012” (FIG.10A)) are coupled to earphone 108b and allow it to rotate about axis 122. Also, coupling member 114b is engaged with slider 106b in a manner to allow the yoke to pivot about axis 124. [0040] A conductive cable 126 (a/k/a “wiring”) (FIG.6) interconnects earphones 108a and 108b and carries the audio signals that are played by the earphones. Cable 126 is flexible, and runs through coupling members 114a and 114b, sliders 106a and 106b, and cushion assembly 104. Cable 126 needs to have sufficient length to accommodate both sliders being slid out of the cushion assembly to their endpoints, and also allow the ^ Docket No.: OG-22-341-WO ^ earphones to be moved from the deployed position to the stowed position. At the same time, cable 126 needs to be managed so that it is unlikely to be bunched or pinched during use. [0041] Unlike some conventional around-ear headphone products, which include plastic yokes, the headphones 100 may include a machined metal yoke. This can provide a desirable look and feel, but unlike the plastic yokes used in certain prior art headphones, which were elastically deformable to fit around the earcup during assembly, these metal yokes are not pliable. Thus, a different manner of coupling these yokes to an earcup may be needed. [0042] Pivot attachment [0043] With reference to FIG.3, a pivot mount 300 is provided in each of the sliders 112. The pivot mount 300 is a U-shaped plastic part with two arms 302 that each define a recess 304 for receiving a pivot pin 402 (FIG.4) of a pivot 400. FIG.4 shows the pivot 400 mounted to the pivot mount 300 with its pivot pin 402 resting in the recesses 304. The arms 302 further define a pair of cavities 306 for receiving silicone dampers 404. The silicone dampers create friction to provide damped feel when the pivot is folded, and they also help to center pivot within the slider. [0044] FIGS.5 and 6 show the pivot and pivot mount subassembly inserted into an open end of a corresponding one of the sliders 106. The slider 106 is generally in the form of a hollow tube (e.g., extruded aluminum). A wall of the slider 106 holds the pivot pin 402 and the silicone dampers 404 in place in the respective recesses in the pivot mount 300. The slider 106 defines a slot (or a notch) 500 that allows the pivot to rotate, about the pivot pin 402, relative to the slider 106. As shown in FIG.6, the pivot axis 200 is off-center, which allows the conductive cable (not shown) to go to the far side of the pivot axis 200, which is beneficial because it hides the cable from the outside when the pivot is folded. [0045] With reference to FIG.7, the pivot and pivot mount subassembly is secured in place within the slider 106 by a pair of pivot mount caps 700, which are secured to the free ^ Docket No.: OG-22-341-WO ^ ends of the arms 302 (FIG.3) of the pivot mount 300 with a pair of screws 702. FIG.8 shows the pivot mount caps 700, which are generally T-shaped. Each of the pivot mount caps 700 includes a ridge 802 that is configured to engage a corresponding groove 502 (FIG.5) along the inner surface of the slider 106. The pivot mount caps 700 are installed by rotating (pivoting) the pivot 400 away from open end of the slider 106 and inserting the pivot mount caps 700 near the center of the open end of the slider 106, and then pushing the pivot mount caps 700 off to the side so that the ridges 802 engage the grooves 502 in the wall of the slider 106. Once the pivot mount caps 700 are in place, the screws 702 are installed to prevent the pivot mount caps 700 from moving. Thus, the screws holding the assembly in place are arranged at the open end of the slider 106, and, as a result, this hardware is hidden after the yoke 116 (FIG.2) has been installed to help provide the headphone with a seamless look without visible fasteners. [0046] The pivot mount caps 700 also serve another purpose. In that regard, the pivot mount caps 700 sit slightly proud (above flush) of the end of the slider 106 and provide a surface for the aluminum yoke 116 to rub against so as to prevent aluminum-on-aluminum contact between the yoke 116 and the slider 106, as shown in FIG.9. [0047] Yoke attachment [0048] FIGS.10A & 10B show one of the right yokes 116 (a mirror-image of the design would be used for the other yoke). The yoke 116 includes a top surface 1002 that mates with a corresponding one of the siders 106 of the headband 102 via a corresponding one of the pivots 400 (FIG.7). An opening 1003 with a pocket 1004 is provided in the top surface 1002 of the yoke 116. The pocket 1004 terminates at a groove 1006 within the opening 1003. The groove 1006 extends partly around the opening 1003. A mating part on the pivot 400 has a protuberance 602 (FIG.6) that is sized to fit in the pocket 1004. During assembly, the pivot 400 is inserted into the opening 1003 and the yoke 116 is then rotated relative to the pivot 400 such that the protuberance 602 rides in the groove 1006. Since the groove 1006 only extends part way around the opening 1003 there is a limit to rotation. ^ Docket No.: OG-22-341-WO ^ [0049] A hole 1008 extends from the top surface 1002 of the yoke 116 to a second, opposite surface 1102 (FIG.11). With the pivot 400 inserted into the opening 1003 and the yoke 116 rotated such that the protuberance 602 is rotated within the groove 1006 and out of alignment with the pocket 1004, a pin 1104 (FIG.11) is inserted into the hole 1108 from the second surface 1102. The pin 1104 prevents the protuberance 602 from being rotated back into alignment with the pocket 1004, thereby locking it within the groove 1006 and preventing separation of the yoke 116 from the pivot 400 and slider 106. [0050] The second surface 1102 sits within a channel 1106 in the yoke 116 and is used to route the conductive cable (not shown) to the earcup 111 (FIG.12) of a corresponding one of the earphones 108. The earcup covers, and thus hides, the conductive cable and the pin 1104 once it is mounted to the yoke 116. As a result, this hardware (i.e., the pin 1104) and conductive cable is hidden after the earcup has been installed to help provide the headphone with a seamless look without visible fasteners or wires. [0051] Earcup attachment [0052] Referring again to FIG.10A, the exemplary yoke 116 has first and second protrusions 1010 and 1012 (a/k/a “earphone coupling members”), respectively, which engage the earcup 111 (FIG.12) to provide the pivot axis 200 (FIG.2) about which the earcup 111 can pivot relative to the yoke 116. As shown in FIG.13, the first protrusion 1010 has a semi-circular cross-section with a channel 1302 that runs through it. That channel 1302 is coupled with the channel 1106 in an associated arm 120 of the yoke 116 for routing the conductive cable (not shown) to the earcup 111. A rib 1304 extends outward from the protrusion 1010. Referring again to FIG.10A, the second protrusion 1012 is generally in the shape of a hollow cylinder. [0053] With reference to FIGS.14A & 14B, the earcup 111 has first and second recesses 1402 and 1404, respectively, for receiving the protrusions 1010 and 1012 (FIG. 10A). The first and second recesses 1402 and 1404 are designed such that the protrusions 1010, 1012 can be slid into the recesses 1402, 1404 without deformation of the yoke 116. ^ Docket No.: OG-22-341-WO ^ [0054] As shown in FIG.14A, the first recess 1402 includes a pocket 1406 for receiving the rib 1304 (FIG.13) on the first protrusion 1010. The pocket 1406 is shaped to limit rotation of the earcup 111 by defining hard stops for the rib 1304. A first hole 1408 (FIG. 14B) extends through the first recess 1402 and aligns with the channel 1302 (FIG.13) to allow cabling to pass therethrough for powering the earcup 111. [0055] With reference to FIG.14B, a second hole 1410 extends through the second recess 1410 and is arranged to be aligned with a tapped hole 1014 (FIG.10A) in the second protrusion 1012. As shown in FIG.12, a screw 1202 is inserted through the second hole 1410 from the interior 1204 of the earcup 111 and is threaded into the tapped hole 1014 (FIG.10A) in the second protrusion 1012, thereby securing the earcup 111 to the yoke 116. The interior 1204 of the earcup 111 is covered by other components (not shown) during assembly, and, as a result, the screw is hidden to help provide the headphone with a seamless look without visible fasteners. [0056] All definitions, as defined and used herein, should be understood to control over dictionary definitions, definitions in documents incorporated by reference, and/or ordinary meanings of the defined terms. [0057] The indefinite articles “a” and “an,” as used herein in the specification and in the claims, unless clearly indicated to the contrary, should be understood to mean “at least one.” [0058] The phrase “and/or,” as used herein in the specification and in the claims, should be understood to mean “either or both” of the elements so conjoined, i.e., elements that are conjunctively present in some cases and disjunctively present in other cases. Multiple elements listed with “and/or” should be construed in the same fashion, i.e., “one or more” of the elements so conjoined. Other elements may optionally be present other than the elements specifically identified by the “and/or” clause, whether related or unrelated to those elements specifically identified. ^ Docket No.: OG-22-341-WO ^ [0059] As used herein in the specification and in the claims, “or” should be understood to have the same meaning as “and/or” as defined above. For example, when separating items in a list, “or” or “and/or” shall be interpreted as being inclusive, i.e., the inclusion of at least one, but also including more than one of a number or a list of elements, and, optionally, additional unlisted items. Only terms clearly indicated to the contrary, such as “only one of” or “exactly one of,” or, when used in the claims, “consisting of,” will refer to the inclusion of exactly one element of a number or list of elements. In general, the term “or” as used herein shall only be interpreted as indicating exclusive alternatives (i.e., “one or the other but not both”) when preceded by terms of exclusivity, such as “either,” “one of,” “only one of,” or “exactly one of.” [0060] As used herein in the specification and in the claims, the phrase “at least one,” in reference to a list of one or more elements, should be understood to mean at least one element selected from any one or more of the elements in the list of elements, but not necessarily including at least one of each and every element specifically listed within the list of elements and not excluding any combinations of elements in the list of elements. This definition also allows that elements may optionally be present other than the elements specifically identified within the list of elements to which the phrase “at least one” refers, whether related or unrelated to those elements specifically identified. [0061] It should also be understood that, unless clearly indicated to the contrary, in any methods claimed herein that include more than one step or act, the order of the steps or acts of the method is not necessarily limited to the order in which the steps or acts of the method are recited. [0062] In the claims, as well as in the specification above, all transitional phrases such as “comprising,” “including,” “carrying,” “having,” “containing,” “involving,” “holding,” “composed of,” and the like are to be understood to be open-ended, i.e., to mean including but not limited to. Only the transitional phrases “consisting of” and “consisting essentially of” shall be closed or semi-closed transitional phrases, respectively. ^ Docket No.: OG-22-341-WO ^ [0063] Other implementations are within the scope of the following claims and other claims to which the applicant may be entitled. [0064] While various examples have been described and illustrated herein, those of ordinary skill in the art will readily envision a variety of other means and/or structures for performing the function and/or obtaining the results and/or one or more of the advantages described herein, and each of such variations and/or modifications is deemed to be within the scope of the examples described herein. More generally, those skilled in the art will readily appreciate that all parameters, dimensions, materials, and configurations described herein are meant to be exemplary and that the actual parameters, dimensions, materials, and/or configurations will depend upon the specific application or applications for which the teachings is/are used. Those skilled in the art will recognize or be able to ascertain using no more than routine experimentation, many equivalents to the specific examples described herein. It is, therefore, to be understood that the foregoing examples are presented by way of example only and that, within the scope of the appended claims and equivalents thereto, examples may be practiced otherwise than as specifically described and claimed. Examples of the present disclosure are directed to each individual feature, system, article, material, kit, and/or method described herein. In addition, any combination of two or more such features, systems, articles, materials, kits, and/or methods, if such features, systems, articles, materials, kits, and/or methods are not mutually inconsistent, is included within the scope of the present disclosure.