Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 5015036 | Apparatus for use as headrest An apparatus useful as a headrest in conjunction with a seat having a back and a head support extending upwardly from the seat back comprises a pillow defined by mutually opposing end walls, a curved sidewall and an opposing, preferably a substantially fl... | 05/14/1991 |
| 5011226 | Headrest A headrest of a movable type, having a headrest body fixed via a stay to a shaft within a seat back. In such a headrest, the shaft is rotatably supported, and a motor is fixed within the seat back such that the motor is disposed at the lower part of the l... | 04/30/1991 |
| 5007653 | Head rest structure for baby strollers An improved head rest assembly cooperates with a seat back and a securing mechanism for baby strollers. The head rest comprises a substantially inverted-U shaped upper part and a base part. The upper part is filled with foam material and then respective r... | 04/16/1991 |
| 4991222 | Sound reproducer A sound reproducer which is to be associated with the head of a hearer thereof has at least one sound source and a holder therefor in the form of an inflatable cushion associated with the sound source to provide that it is disposed in a position of use wh... | 02/05/1991 |
| 4989836 | Detachable wheelchair headrest A wheelchair headrest, attached to opposite vertical frame members of the wheelchair, includes at least two resilient head supports for preventing involuntary head movement in a person seated in the wheelchair. The wheelchair headrest is detachable from t... | 02/05/1991 |
| 4978169 | Seat headrest composite spring clip An improved latch arrangement for attaching an aluminum support post of a headrest to a vehicle seat back. A mounting bracket supported on seat back frame having a passage slidably receiving the support post. The mounting bracket passage is arranged with ... | 12/18/1990 |
| 4974903 | Headrest for conveyance A headrest for a seat of a conveyance comprises a headrest body mountable on the backrest of the seat and shaped to accommodate at least one container for a beverage, access to the container being provided for the removal from, and reinsertion into, the h... | 12/04/1990 |
| 4971393 | Sitting furniture, especially for automobile seats A lateral head-rest for seating furniture is provided consisting of a soft-elastic cylindrical body, which is mounted on a carrying element through a slotted hole. The carrying element is connected with a clamping device consisting of a front and a rear b... | 11/20/1990 |
| 4951998 | Automobile headrest An automobile head rest assembled from two elongated pillow sections flexibly attached to each other to provide a longitudinal head rest that can be bent ay any desired angle. A support cord extending longitudinally along the top edge of the two pillow se... | 08/28/1990 |
| 4948197 | Child shampooing chair A child shampooing chair which is designed to be located within a bathing area such as a conventional bathtub. The child shampooing chair includes a conventional seat and a conventional back section with the back section being tiltable relative to the sea... | 08/14/1990 |
| 4944554 | Active biomechanical chair A seat housing a multiplicity of adjustable horizontal planes connected to a processor in turn connected to an input device responding to a prerecorded spinal profile information of an individual's spinal configuration submitted to the input device. A sea... | 07/31/1990 |
| 4922558 | Headrest for use in beauty shop shampoo bowls, sinks and the like The present invention includes two frame members (10,12), each of which includes two elongated side legs (14,16) joined at the top by crossbars (20,21) and near the bottom by a cross piece (26). The two frame members (10,12) are rotatably connected to eac... | 05/08/1990 |
| 4919483 | Collapsible and reformable headrest for vehicles A headrest for securing to the window in the cab of a truck, or to any supporting surface in other types of vehicles, employing a cushion of porous plastic material surrounded by a nonporous material. The cushion has a port extending through the casing an... | 04/24/1990 |
| 4905332 | Inflatable article An inflatable article comprises a peripheral inflatable member adapted to be folded on itself about a line, defining two generally similar parts, thereof; and a cushion member attached to the peripheral member along the inside of one of the parts. When fo... | 03/06/1990 |
| 4900089 | Headrest An improved aftermarket headrest which is maintained in an operative position without the aid of screws, bolts, clips and/or mounting brackets and without any modification of a vehicle seat or body. The headrest includes a unitary resilient body having an... | 02/13/1990 |
| 4883243 | Ejection seat having receding headrest for spinal alignment during ejection An ejection seat includes a rigid shell adapted to closely surround the head of a pilot during ejection to restrain lateral movement of the pilot's head. The pilot's head is supported within the shell during ejection at a position that causes it to be ali... | 11/28/1989 |
| 4880275 | Combination headrest and wall with sliding window A cushion useful a headrest in a vehicle comprising an elastic, foamed and resilient cushion body having a contoured face portion and a flat back portion wherein at least the face portion is covered by a finished surface and wherein the back portion carri... | 11/14/1989 |
| 4863218 | Articulated headrest mechanism A headrest tilting mechanism includes a bar having first and second ends, with a headrest mounting portion proximate the first end and a substantially straight portion proximate the second end. A support means includes a curved cam surface and a pin havin... | 09/05/1989 |
| 4861107 | Head rest with forwardly pivotable pad mounted on friction hinge A head rest for mounting on an automotive seat back comprises a rod fixed to the back, the rod having a generally horizontal mounting portion, a frame having a pad thereon, a mounting bracket secured to the frame, the bracket attaching the frame to the ro... | 08/29/1989 |
| 4858994 | Adjustable headrest for automotive seat An adjustable headrest is disclosed, which comprises a core case in which a tilting mechanism is installed, the core case having at its given portion a pair of slots formed therethrough; a pair of stays extending from the tilting mechanism and projecting ... | 08/22/1989 |
| 4856848 | Manual headrest The present invention in a preferred embodiment provides an apparatus and method of utilization there of of a fore and aft adjustable vehicle seat headrest. The headrest includes a base providing means of attachment of the headrest to said vehicle seat. A... | 08/15/1989 |
| 4854642 | Head restraint guide assembly A head restraint assembly having a bushing member adapted for retaining and guiding a post supporting the head restraint pad of a motor vehicle seat back. The bushing is installed within the seat back and allows the head restraint pad to be positioned at ... | 08/08/1989 |
| 4848838 | Curved articulating headrest support bar A headrest tilting mechanism includes a curved bar having first and second ends, with a headrest mounting portion proximate the first end and a cam following means proximate the second end. A support means includes a curved cam surface which is engaged by... | 07/18/1989 |
| 4844544 | Fore-and-aft adjusting device for head rest A fore-and-aft adjusting device for head rest used in an automotive seat, which is adapted for adjusting the position of the head rest in the forward and backward direction relative to the seat. In the device, provided is a friction member for that adjust... | 07/04/1989 |
| 4844545 | Headrest apparatus A headrest apparatus is provided with a support member disposed within a seatback, a stay guide member slidably supported on the seatback, a stay slidably supported on the seatback through the stay guide member and fixedly connected to a headrest, and a l... | 07/04/1989 |
| 4840428 | Head rest adjusting device A head rest adjusting device using a friction mechanism, which permits the forward and backward rotative adjustment of the head rest relative to a head rest stay. The friction mechanism comprises a substantially U-shaped leaf spring receiving the head res... | 06/20/1989 |
| 4840429 | Motor-adjustable head support for a dental treatment chair The invention is directed to an adjustable head support for a dental treatment chair, which is a reclining chair with an adjustable head rest or support. In order to better match the kinematics of the adjustable head support to a natural tilting motion of... | 06/20/1989 |
| 4838611 | Car seat pillow Car seat pillow having a pair of side cushions engageable with opposite sides of the child's head, a neck cushion extending between the side cushions, and tether straps for attaching the cushions to the shoulder straps of a car seat with the side cushions... | 06/13/1989 |
| 4828287 | Safety head protector for vehicle cabs A safety head protector for use in a pickup truck cab or other vehicle with a rear window immediately behind the occupant's head. The protector is made of a foam cushion mounted on a sturdy support and covered by an outer cover. The protector is mounted o... | 05/09/1989 |
| 4828321 | Portable beach lounge A portable beach headrest is presented having a double u-shaped frame, said frame members being hingedly and collapsibly connected to each other by upper and lower locking hinges. A flexible headrest is secured in between the vertical legs of the frame an... | 05/09/1989 |
| 4807933 | Headrest An improved aftermarket headrest which is maintained in an operative position without the aid of screws, bolts, clips and/or mounting brackets and without any modification of a vehicle seat or body. The headrest includes a unitary resilient body having an... | 02/28/1989 |
| 4797934 | Speaker headrest A speaker headrest is composed of a frame and a concave front surface to support the user's head through a cushion and members flanking the frame and rotatably attached thereto. Speakers contained in these flanking members are pressed against the user's e... | 01/10/1989 |
| 4779930 | Infant head support for use with infant retaining devices An infant head support for use with infant retaining devices, such as automobile auxiliary seats, infant carriers, swing seats, baby strollers and the like, used for the retention of infants and early age children. The head support comprises a somewhat de... | 10/25/1988 |
| 4779928 | Automotive head restraint A head restraint for a vehicle seat is disclosed. The restraint comprises a support member for insertion into the vehicle seat and a shock absorbing assembly secured to the upper end of the support member and which comprises a wire lattice form having ver... | 10/25/1988 |
| 4779929 | Variable-height and variable-slant head rest with a center window for motor vehicles A variable-height and variable-slant head rest with a center window, for motor vehicles comprising two mounting rods adapted to be attached by their one ends to the back rest of a motor vehicle seat and a support frame embedded in a cushion body and adapt... | 10/25/1988 |
| 4778218 | Adjustable headrest A headrest assembly includes a support plate attached to a seat and to which a head engaging padded member is movably attached. A pivot coupling extends between the plate and headrest for controlling the movement of the padded headrest toward and away fro... | 10/18/1988 |
| 4773707 | Headrest attachment A headrest attachment of a plurality of interconnected cushion members adapted to be wrapped around a seat headrest to provide a larger and closer surface area behind the user's head.... | 09/27/1988 |
| 4770466 | Headrest A headrest includes recessed suction cups for detachably attaching the headrest to a support surface to substantially prevent the headrest from sagging away from the surface, and limit relative movement between the headrest and the surface.... | 09/13/1988 |
| 4762367 | Vehicle headrest The present invention provides a vehicle seat headrest which by rotation of a handle can be extended or retracted in a generally horizontal plane. A preferred embodiment of the present invention also allows for adjustment of the tilt of the headrest.... | 08/09/1988 |
| 4758047 | Speaker equipped headrest A headrest attachable to vehicle seat structure and including one or more speakers located at the ends of the headrest. A main base member of the headrest receives the speakers in recessed areas while a headrest cover encloses the speakers and main body. ... | 07/19/1988 |