Background of the Art Hair curlers generally comprise a hair rolling portion and a closure member for retaining the hair upon the hair rolling portion. The hair rolling -portion is usually a generally cylindrical member comprising a core about which the hair is wound and end flanges that bound the core and have a greater diameter than the core. An example is shown in U. S. Patent No.

4,596,722 issued to Doyle for an Elastoiner Hair Roller. The Doyle hair roller includes an hollow outer barrel bound by a pair of end fanges.

Many kinds of clamping attachments, securing devices, and hair tension methods are employed to hold hair on the hair rolling portion of a hair curler. Most often this attachment or device is a piece that is separate from the hair curler, such as a clip or bobby pin that is attached to the curler in a way to retain hair wound thereupon. An example is shown in U. S.

Patent No. 4,234,000 issued to Pizzino for a Compound Hair Roller. The Pizzino compound hair roller has two members suitable for receiving a portion of a length of hair. One member is a hollow cylindrical roller. The other member is a shell-like roller having a longitudinal slot and a plurality of fins projecting radially inward from its interior surface. The shell-like roller is adapted to receive the hollow cylindrical roller upon which hair has been wound so as to hold the hair in place.

Another example of an attachment employed to hold hair on the hair rolling portion of a hair curler is shown in U. S. Patent No. 4,627,452 issued to Caruso for an Electrically Heated Hair Roller. A perforated shield engages the end pieces of the hair roller so as to envelop a substantial portion of the roller, thereby creating a chamber. The chamber is defined by the outer surface of the hair rolling portion the end flanges, and the inner surface of the perforated shield. The perforations in the shield permit

steam to enter into the chamber. The hair roller is electrically heated internally. To use the hair roller, the shield must be removed, but the shield is re-engaged after hair has been wound onto the hair roller, and, along with helping to retain steam, the shield helps hold the hair around the roller.

Hair curlers with separate closure members are somewhat difficult to use on one's own hair because the user must use her hands to wind the hair on the hair rolling portion, hold the hair there with one hand, while grasping a clip with the other hand, and then maneuver the closure (often without looking) to lock the hair in place. Another disadvantage of separate closure members is that they generally must be made hard and relatively inflexible in order to satisfactorily hold hair. This may make them uncomfortable to wear.

Some hair curlers have a closure member affixed to the hair rolling portion. Such members are really separate pieces that are mechanically hinged or otherwise movably joined with the hair rolling portion. An example is U. S. Patent No. 3,939,851 issued to Parlagreco for a Single Step Hair Curler With independent Self-Contained Supporting and Securing Means. This invention pertains to a hair curler having a roller rotatably mounted on end supports whose base portions are adapted to rest on the head of the user. Each end support operates independently of the other and each may include a self-contained securing tension mechanism in the form of a ratchet device. The roller can be easily disengaged from its position on the user's head by tipping the roller over and releasing the tension thereby enabling the user to unwind the hair. Such devices remain uncomfortable on the scalp, awkward to use and, additionally, are costly to manufacture.

Other hair curlers have a pliable closure member integrally attached to the hair rolling portion. An example of a pliable closure is shown in U. S.

Patent No. 5,076,299 issued to Wistrand et al. for a Flexible Locking Hair Curler. The Wistrand hair curler is a spool type hair curler having a cylindrical hair roller portion formed between a pair of opposing parallel flanges and provided with a pliable integrally formed, cup shaped closure member. The closure member is axially aligned with one of the end flanges of the spool shaped hair roller portion. The watt of the cup-shaped

closure member extends away from the spool shaped portion and, after the hair is wound upon the spool-shaped portion, the wall may be flipped substantially 180 degrees about its point of attachment in order to place the rim of the cup-shaped closure member proximate to the other flange to thereby retain the hair around the spool shaped portion.

Pliable closures are comfortable on the head and relatively easy to use. Yet pliable, elastomeric materials capable of retaining sufficient heat are heavier than plastic, so the devices are quite uncomfortable because they pull the hair. This effect is especially problematic as the size of the hair curler increases. A balance must be found between a material that is soft enough to be pliable, but strong enough to hold a desired shape without becoming entangled in the user's hair. In addition, elastomeric materials can be so slick as to make it difficult for the user to wind hair around it.

Accordingly, a need exists for a hair curler with a closure to hold hair on a hair rolling member that is comfortable to wear, is easy to use, and is inexpensive to manufacture.

It is an object of this invention to provide a hair curler with a closure to hold hair on a hair rolling member that is comfortable against the head because it does not have jutting edges and it does not press on the head to hold itself in place It is a further object of this invention to provide a hair curler with a closure to hold hair on the hair rolling member that is comfortable to wear and does not pull or tangle the hair.

It is another object of this invention to provide a hair curler with a closure to hold hair on the hair rolling member that may be operated with one hand.

It is also an object of this invention to provide a hair curler with a closure to hold hair on the hair rolling member that is inexpensive.

Summarv of the Invention The present invention is a hair curler comprising an outer hollow, cylindrical member with opposed end openings, an inner member within the hollow of the outer member, and a plurality of clips, each clip connected to

the inner member by flexible roots and connected to the outer member by an integral pivot axis. The clips extend though longitudinal openings in the outer member. Using finger pressure on the inner member, the inner member may be moved longitudinally relative to the outer member. This movement causes each clip to rotate around its respective pivot axis.

Thereby, the clips either grip or release a users hair when the user's hair is wound around the outer member. The present invention also includes detent means that allow the inner member to be restricted in gripping and released positions.

Brief Description of the Drawinqs Figure 1 is am exterior elevational view of a hair curler incorporating the present invention.

Figure 2 is a cross sectional view of the hair curler of Figure 1.

Figure 3 is an exploded perspective view of the hair curler of Figure 1.

Figure 4 is an exterior perspective view of the hair curler of Figure 1 showing the hair clips in the gripping position.

Figure 5 is an exterior perspective view of the hair curler of Figure 1 showing the hair clips in the released position.

Figure 6 is a composite sectional plan view of the hair curler of Figure1 showing, on the left, hair clips in a released position, and, on the right, hair clips in a gripping position.

Detailed Description of the Invention Fig 1 shows an exterior view of a preferred embodiment of a hair curler that incorporates the present invention. Outer member I is cylindrical in shape with plural fins 3 on its surface. Outer member 1 also has a pair of end rims 5. plurality of moveable clips 17 extend outward beyond the surface of outer member 1. One of a pair of end pieces 13 of a moveable inner member 11 (see Fig. 2) can also be seen.

As seen in Fig 2, outer member 1 has a pair of open ends 7 and a hollow region 9 between the open ends. Inner member 11 is movably positioned within hollow region 9 (see Fig. 4). Inner member 11 comprises a pair of end pieces 13 and two 15 columns 15 connected therebetween, each having plural hair clips 17 attached via roots. The two sets of hair clips 17 preferably extend in opposite directions. Using finger pressure on end pieces 13 of inner member 11, inner member 11 may be moved longitudinally relative to outer member 1.

Each hair clip 17 is connected to inner member 11 via a flexible root 19 and is coupled to outer member 1 via an integral pivot axis 21. Fig. 3 shows that the distal ends of each integral pivot axis 21 fit into an opposed pair of orifices 23. Orifices 23 are formed into edges 25 of semicircular pieces 27 and 29 that comprise outer member 1. Longitudinal movement of inner member 11 relative td outer member 1 causes each hair clip 17 to rotate around its respective pivot axis 21. Thereby, hair clips 17 either grip or release a users hair after the user'5 hair is wound onto outer member 1 in accordance with the position of inner member 11. The gripping position is shown in Fig. 4 while the released position is shown in Fig 5.

In Fig. 6, a detent means 31 are shown that restrict the movement of inner member 11. By restricting the movement of inner member 11, hair clips 17 may be positioned in the released position or the gripping position.

The released position is illustrated in Fig. 6 as the unshaded, left side. In the released position, recesses 33 on columns 15 of inner member 11 are engaged by outwardly extending nodules 35 on the interior surface outer member 1 Detent means 31 is in this position when hair is being wound upon outer member 1. The gripping position is frustrated in Fig. 6 as the shaded right side. In the gripping position, recesses 37 on columns 15 of

inner member 11 are engaged by outwardly extending nodules 35 on the interior surface of outer member 1.

The exploded view of Figure 3 also shows how the hair curler can be assemble. Outer member 1 is made of two complementary semi- cylinders 27 and 29. Inner member 11 is molded as a single piece. To assemble, semi-cylinders 27 and 29 are brought together each pivot axis 21 is inserted into a respective orifice 23 in edges 25 of semi-cylinders 27 and 29, and detent means 31 are mated.

The invention having been thus described with particular reference to the preferred form thereof, it will be obvious that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.