Hammock And Canopy Support Patents (Class 5/128)
  • Patent number: 11889915
    Abstract: A hammock assembly is provided and includes a fastening system, a hammock, a first cover, and a second cover. The fastening system includes a first tape section and second tape section corresponding to the first tape section. The hammock includes a hammock body with the first tape section attached to an edge thereof. The first cover has a cover body with the second tape section attached to an edge thereof, the cover removably attachable to the hammock by connecting the first tape section and the second tape section. The second cover is a permeable netting and includes the second tape section attached to an edge thereof. The second cover convertible with first cover and removably attachable to the hammock by connecting the first tape section and the second tape section.
    Type: Grant
    Filed: July 14, 2022
    Date of Patent: February 6, 2024
    Assignee: Dutch Clips, LLC
    Inventor: Thomas Ressler
  • Patent number: 11547201
    Abstract: A rotary hanging chair comprises a cushion, a support frame and a base assembly. The cushion has two ends connected to an upper end of the support frame and is able to swing forwards and backwards with respect to the support frame. A bottom of the support frame is connected to the base assembly and is able to rotate within 360° with respect to the base assembly. The entire rotary hanging chair comprises three detachable parts, thus being simple and practical in structure, not only can swing forwards and backwards like a traditional hanging chair, but also can rotate within 360° to change the direction freely to meet the requirement for switching the view angle, and is small in size, easy to carry and capable of being used both indoors and outdoors.
    Type: Grant
    Filed: May 31, 2022
    Date of Patent: January 10, 2023
    Assignee: Zhejiang Pride Leisure Products Co,. Ltd.
    Inventor: Benlong Sun
  • Patent number: 11191362
    Abstract: A seat system and assembly. A seat system may include a removable, repositionable elongated flexible body and a collapsible frame. The elongated flexible body may include an upper tapered portion and a lower tapered portion. The collapsible frame may have an elastic cord securing a plurality of interconnectable members. The result is a seat assembly to receive a weight of a user in a semi-reclined position and removable from the collapsible frame to a storage position.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: December 7, 2021
    Assignee: BooneDOX, Inc.
    Inventor: Chad Brinkley
  • Patent number: 10912375
    Abstract: A hammock stand includes two structural support arms extending from a central base and configured to support a hammock above the base. Each support arm has a curved shape bowing inward at upper ends, such that an overall shape of the hammock stand is tapered. The hammock stand is configured to support a hammock occupant generally oriented transverse to an axis defined along the structural support arms. The structural support arms are coupled to the central base by a coupling assembly. In some examples, the coupling assembly includes a yoke configured to couple the structural support arms to a rotary bearing. The rotary bearing allows the structural support arms, and therefore the hammock, to swivel relative to the base.
    Type: Grant
    Filed: April 15, 2020
    Date of Patent: February 9, 2021
    Assignee: Yellow Leaf Hammocks, LLC
    Inventors: Iosef Demin, Rachel Connors, Bryce Gibson, Kurt MacLaurin
  • Patent number: 9259603
    Abstract: A portable spotting apparatus includes a pair of support assemblies positioned a distance from each other to define a spotting area for a user. The support assemblies each have an upright member that includes a top portion coupled with a pulley and a bottom portion configured to rest on a floor surface. A pair of legs each have an upper end coupled with an intermediate portion of the upright member and a lower end configured to rest on the floor surface on opposing lateral sides of the upright member. At least one cord is configured to extend over the pulley and to couple with a harness for spotting the user in the spotting area. A cross member is coupled between lower regions of the support assemblies to maintain the distance between the support assemblies.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: February 16, 2016
    Assignee: SAM Spotting Systems, L.L.C.
    Inventor: Justin Wireman
  • Patent number: 8931840
    Abstract: A composite frame includes a frame body including two support units, two lower connecting rods, two suspending units and an upper connecting rod that are removably connectable together so that the constructed frame body is structurally stable, while assembly and disassembly of the same are manually operable and convenient to allow for effective storage and cost reduction in terms of packaging and delivery.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: January 13, 2015
    Inventor: Yi-Chen Huang
  • Patent number: 8731634
    Abstract: A medical imaging system for imaging a region of interest (ROI) in a patient. The imaging system includes an imaging modality unit having a field of view (FOV) and an examination platform. The examination platform has a pair of opposite ends and a platform surface extending therebetween along an examination axis. The platform surface extends into the FOV. The imaging system also includes a patient transport belt that is supported by the examination platform and extends along the platform surface between the ends of the examination platform. The imaging system also includes a motor that is operatively coupled to and configured to move the transport belt along the platform surface in a direction along the examination axis. The motor moves the transport belt so that a predetermined portion of the transport belt is within the FOV.
    Type: Grant
    Filed: October 20, 2009
    Date of Patent: May 20, 2014
    Assignee: General Electric Company
    Inventor: Yossi Birman
  • Patent number: 8650679
    Abstract: A method for spreading a hammock is disclosed. The method may include selecting a hammock comprising a hammock base having a first end, a second end opposite the first end in a longitudinal direction, a first side, and a second side opposite the first side in a lateral direction. The method may further include suspending the first end of the hammock base from a first anchor and suspending the second end of the hammock base from a second anchor. Once suspended, the hammock base may be spread in the lateral direction using exclusively a dynamic spreader system. The dynamic spreader system may automatically adjust the amount of the spreading in response to changes in the weight, shape, or orientation of contents within the hammock base.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: February 18, 2014
    Assignee: Clark Outdoor Products, L.C.
    Inventors: Gary L. Clark, Spencer D. Clark
  • Patent number: 8356370
    Abstract: A method for spreading a hammock is disclosed. The method may include selecting a hammock comprising a hammock base having a first end, a second end opposite the first end in a longitudinal direction, a first side, and a second side opposite the first side in a lateral direction. The method may further include suspending the first end of the hammock base from a first anchor and suspending the second end of the hammock base from a second anchor. Once suspended, the hammock base may be spread in the lateral direction using exclusively a dynamic spreader system. The dynamic spreader system may automatically adjust the amount of the spreading in response to changes in the weight, shape, or orientation of contents within the hammock base.
    Type: Grant
    Filed: October 6, 2009
    Date of Patent: January 22, 2013
    Assignee: Clark Outdoor Products, L.C.
    Inventors: Gary L. Clark, Spencer D. Clark
  • Patent number: 8272085
    Abstract: The present invention includes apparatus and methods for installing a hammock upon a boat. A method of installing a hammock comprises the steps of: installing first and second hammock end mounting means upon the boat, the first and second mounting means each comprising one of a vertical mounting member and a suspending anchor to suspend ends of a hammock, where each vertical mounting member is affixed to a surface of the boat, the vertical member including a longitudinally extending member having a first end and a second end, the first end affixed to a surface of the boat, the second end being elevated above the first end, and where each suspending anchor is affixed to an elevated structure of the boat, the anchor having one or more mounting surfaces engaging the elevated structure and one or more ratchets each receiving a strap extending about the elevated structure.
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: September 25, 2012
    Inventors: Justin Finch, Gary Loomis
  • Patent number: 7996935
    Abstract: A light and credible foldable hanging bed having a frame and a fabric attached thereto. The frame has seats and successive supporting arms linked thereto. Linking poles are provided to move the supporting arms and sponge sleeves may be used for holding by hands of a user. With the successive first and second supporting arms, the joint and check element are saved and the risk of break of the joint is diminished and a weight will be able to be lowered.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: August 16, 2011
    Inventor: Libin Chen
  • Patent number: 7870933
    Abstract: A portable hammock (kit) with artificial limb assembly enables a user to selectively support a vertical load adjacent a select vertical support structure. The artificial limb assembly comprises a pair of compression members and first and second tension members. Each compression member has first and second compression ends. The first compression ends are drawn together such that the longitudinal axes of the members substantially intersect. The second compression ends are thus spaceable from one another. The first tension member interconnects the second member ends and receives a supportive outer surface of the vertical support structure. The second tension member interconnects the first compression ends with the vertical support structure at a superior portion thereof. The first compression ends at an opposite portion receive the vertical load.
    Type: Grant
    Filed: December 3, 2005
    Date of Patent: January 18, 2011
    Inventor: Richard E. McInnes
  • Patent number: 7725965
    Abstract: A collapsible frame is movable between a closed configuration and an open configuration. The frame includes a first side support assembly and a second side support assembly. Each side support assembly includes a collapsible first support member including a first platform and a collapsible second support member coupled to the first support member at a plurality of pivot points. The second support member includes a support joint movable with respect to the first platform for facilitating moving the collapsible frame between the closed configuration and the open configuration.
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: June 1, 2010
    Inventor: Anthony Sanford-Schwentke
  • Patent number: 7627913
    Abstract: A double hammock configured to accommodate two persons, while providing independent stability to both persons occupying the hammock. The hammock includes a first elongate hammock base, a second elongate hammock base, and an elongate divider member attached to both hammock bases so that the divider separates at least the head sections of the hammock bases and extends between them. Each hammock base includes a head section at one longitudinal end, a foot section at an opposite longitudinal end, an outer side section at one side between the head and foot sections, and an inner side section at an opposite side between the head and foot sections. The divider member includes a first side attached to the inner side section of the first hammock base and an opposite second side attached to the inner side section of the second hammock base.
    Type: Grant
    Filed: April 29, 2008
    Date of Patent: December 8, 2009
    Inventor: Gary L. Clark
  • Publication number: 20080078024
    Abstract: A foldable hammock stand comprises a curved longitudinal base channel attached at each end to a support leg. A pair of curved longitudinal support arms pivotally attach inward from opposing ends of the base section to form a support construction for holding a two-point swing style hammock. A latching mechanism in each support arm engages with the base section to hold the support arm in the open or operative position. A latch release in each support arm disengages the latch from the base section to allow each support arm to pivot in an upward arc to the upright or stored position. A latching mechanism on each support arm engages a base section cross member to hold the support arm in the stored position until released back into the operative the position.
    Type: Application
    Filed: September 29, 2006
    Publication date: April 3, 2008
    Inventor: Hubert Perry Weir
  • Publication number: 20070277310
    Abstract: A collapsible frame is movable between a closed configuration and an open configuration. The frame includes a first side support assembly and a second side support assembly. Each side support assembly includes a collapsible first support member including a first platform and a collapsible second support member coupled to the first support member at a plurality of pivot points. The second support member includes a support joint movable with respect to the first platform for facilitating moving the collapsible frame between the closed configuration and the open configuration.
    Type: Application
    Filed: June 2, 2006
    Publication date: December 6, 2007
    Inventor: Anthony Sanford-Schwentke
  • Patent number: 6842920
    Abstract: A stand is described for supporting a hammock, the stand having a set of two legs on each end. The two sets of legs are joined together by a covering arch which extends up and over the hammock providing shade therefor.
    Type: Grant
    Filed: November 24, 2003
    Date of Patent: January 18, 2005
    Assignee: Hatteras Hammocks, Inc.
    Inventor: Jesse A. Branch, III
  • Patent number: 6829792
    Abstract: A sun visor is described for mounting on the front spreader bar of a hammock, so that it extends up from and over the front spreader bar. It includes a stabilizer spar operatively connected to the front spreader bar and extending outward therefrom through and under the ropes of the hammock's clew.
    Type: Grant
    Filed: July 15, 2003
    Date of Patent: December 14, 2004
    Assignee: Hatteras Hammocks, Inc.
    Inventor: Clifford B. Braly
  • Publication number: 20040172752
    Abstract: A collapsible hammock frame having approximately parallel and spaced apart base members and pivotably attached uprights that define head and foot suspension points from which a hammock may be suspended. The uprights and base members fold into a completely collapsible configuration that can be easily carried and transported, and unfolded into a working configuration without the assembly of separate parts.
    Type: Application
    Filed: October 3, 2003
    Publication date: September 9, 2004
    Inventors: Quan Trung Vo, Stanley D. Johnson, Dean M. Uehara, Martin E. Hsia
  • Patent number: 6665896
    Abstract: A hammock assembly includes a left frame and a right frame opposite to and pivoted to the left frame such that the left and right frames are rotatable relative to each other between an unfolded position, in which, mounting ends of the left and right frames are moved away from each other, and a folded position, in which, the mounting ends of said left and right frames move toward each other. A bedding sheet is disposed above the left and right frames, and has two opposite ends respectively connected to the mounting ends of the left and right frames such that the bedding sheet will be stretched when the left and right frames are disposed at the unfolded position and that the bedding sheet will be folded when the left and right frames are disposed at the folded position.
    Type: Grant
    Filed: September 9, 2002
    Date of Patent: December 23, 2003
    Assignee: Shin Yeh Enterprise Co., Ltd.
    Inventor: Chuen-Jong Tseng
  • Patent number: 6421851
    Abstract: A hammock includes a bed made of a rectangular piece of fabric, whose ends are gathered together and secured to ropes which can be tied to respective trees. A ridge cord extends between the gathered ends, this cord being shorter than the fabric bed, so that the bed sags somewhat no matter how much tension is applied to the ropes. An entrance slit extending about half the length of the hammock allows one to enter from below. The hammock has a lozenge shape when it is viewed from the top and may be covered by a lozenge-shaped canopy.
    Type: Grant
    Filed: January 29, 2001
    Date of Patent: July 23, 2002
    Inventor: Thomas F. Hennessy
  • Patent number: 6389620
    Abstract: A hammock includes a bed made of a rectangular piece of flexible, breathable material, whose ends are gathered together and secured to ropes which can be tied to respective trees. A ridge cord extends between the gathered ends, this cord being shorter than the bed, so that the bed sags somewhat no matter how much tension is applied to the ropes. An entrance slit extending about half the length of the hammock allows one to enter from below. The hammock has a lozenge shape when it is viewed from the top and may be covered by a lozenge-shaped canopy.
    Type: Grant
    Filed: February 15, 2001
    Date of Patent: May 21, 2002
    Assignee: The Hennessy Hammock Co.
    Inventor: Thomas Hennessy
  • Patent number: 6383085
    Abstract: A swing assembly includes a support unit, a seat unit disposed among a pair of side frames and a horizontal bar of the support unit, linking units for connecting the seat unit to the horizontal bar, and a canopy unit having a pair of lateral canopy frames mounted on the support unit and a flexible canopy sheet spreading across and over the canopy frames. Each canopy frame includes a horizontal bottom rail transverse to the horizontal bar, and an upright main frame member disposed above and fastened to the bottom rail. The canopy sheet is formed with a pair of retaining sleeves that are sleeved respectively on the bottom rails of the canopy frames.
    Type: Grant
    Filed: May 24, 2001
    Date of Patent: May 7, 2002
    Assignee: Shin Yeh Enterprise Co., Ltd.
    Inventor: Chuen-Jong Tseng
  • Patent number: 6276008
    Abstract: A hammock includes two parts each have a post and two connecting tubes extending radially outward from each post. Each post has two collapsible legs pivotally connected to one of two ends thereof and a tube connected to the other end of each post. Two beams composed of two sections are connected between the two pairs of the connecting tubes. A sun-shade is detachably connected between the two tubes of the posts. Each post has a hook so that a bed is connected between the two hooks.
    Type: Grant
    Filed: September 9, 1999
    Date of Patent: August 21, 2001
    Inventor: Fu-Ching Chen
  • Patent number: 6185763
    Abstract: A hammock which comprises a bed having an entrance slit, situated in the same vertical plane as its longitudinal axis of symmetry and located on one side of its center of symmetry. The bed is provided with a self closing feature for the entrance slit. This feature is located at the mid point of the bed's short side, where the entrance slit begins. The bed has a bundle of gathered folds, situated at both its ends. The bundle is made of each short side of a rectangular sheet which forms the bed. A ridge line goes through each opposite bundle of gathered folds, where it is connected to each suspending rope.
    Type: Grant
    Filed: March 4, 1999
    Date of Patent: February 13, 2001
    Inventor: Thomas Francis Hennessy
  • Patent number: 5983422
    Abstract: A collapsible, self-supporting, fully portable hammock assembly in which the supporting framework is fabricated of lightweight metal components. The apparatus can be quickly and easily extended from a compact, collapsible configuration into a self-supporting highly stable structure which safely carries the hammock. The supporting framework includes a pair of hammock support uprights which are pivotally connected to novel mounting brackets which also support pairs of transversely extending ground engaging stabilizing members.
    Type: Grant
    Filed: March 26, 1998
    Date of Patent: November 16, 1999
    Inventor: Lee Bayless
  • Patent number: 5913772
    Abstract: A hammock which has a netted fabric covering and a tarp suspended above it, form a structure similar to a tent suspended above ground. The tarp, made of waterproof lightweight fabric, is attached to the netted fabric in the middle and hangs down on either side of the hammock. The tarp can also be pulled out by the corners to form a canopy over the hammock by means of ropes tied to a branch of a tree or other support. Pockets attached to the underside of the hammock are large enough to hold clothing and other gear. These pockets also provide insulation from the cold. The main support comes from a single rope for each end attached through a sleeve which gives extreme stability. Elastic straps connected to the ends of the tarp adjust for stress to the tarp and netting as weight is applied to the hammock. A section of webbing sewn to the top of the head end of the netting and to the underside of the tarp provide a drop space between the tarp and netting which allows for condensation run off.
    Type: Grant
    Filed: June 3, 1998
    Date of Patent: June 22, 1999
    Inventor: Gary L. Clark
  • Patent number: 5659907
    Abstract: A hammock includes a frame for supporting a support sheet material. The frame includes two beams having end portions secured together and each having a free end. A pair of posts include lower portions secured on the free ends of the beams. The posts are arranged slightly inclined relative to the beams and include two hooks secured to the upper ends for supporting the support sheet material. The support sheet material may be stably supported in place by the frame without securing to trees. The frame may be folded to a compact configuration.
    Type: Grant
    Filed: January 30, 1995
    Date of Patent: August 26, 1997
    Inventor: Ton-Chau Huang
  • Patent number: 5564987
    Abstract: A folding swing hammock that has a main rectangular support frame that is held in a generally vertical position by leg members when the hammock is in an unfolded condition. A rectangular seat frame is rotatably supported between two support arms which, in turn, are suspended by springs in the top element of the support frame. A cover is rotatably mounted in the top section of the support frame over the seat frame. The interrelated parts of the hammock are connected together so that they can all be folded into the plane described by the support frame.
    Type: Grant
    Filed: August 11, 1995
    Date of Patent: October 15, 1996
    Assignee: Societe Industrie et Sport S.A.
    Inventor: Patrice Ayrolles
  • Patent number: 5240021
    Abstract: A suspension tent having two basic components, a tent body and a frame. The tent body, which is of unitary construction, is comprised of two separate compartments, an upper bed compartment, enclosed by a canopy being of an umbrella arrangement, and a lower storage compartment. Both compartments are accessible from the outside of the tent through openings in the tent body. These openings can be close by a cloth closure, such as a flap, and a screen flap which may be fastened about the opening by some fastener, such as a zipper. The frame is constructed of a plurality of telescopic tubular sections. The tent body is suspended from the frame by fasteners located about the periphery of the bed compartment at each of the four corners. This suspension of the tent body permits the weight of the bed compartment to be distributed to the frame, providing adequate support for the user. The tent body is also pulled taut and fastened to the frame at each corner about the periphery of the bottom of the storage compartment.
    Type: Grant
    Filed: September 30, 1991
    Date of Patent: August 31, 1993
    Inventor: Michael E. Snodgrass
  • Patent number: 5072694
    Abstract: A pet bed and enclosure device specifically designed for cats includes a spring support device from which is suspended a cloth panel bed. The spring support device includes an upper square frame supported over a lower square frame by two spring steel members attached at a rear section of the upper frame and angled forwardly and attached to the front section of the base frame. A fabric cover enclosure is supported by resilient support members pulled into a round shape by tab ends extending from each corner of the cover which wrap around the upper frame and hook onto horizontal hook members extending inwardly from the corners of the upper frame. A hole in the cover allows the cat to enter the enclosure and rest on the cloth bed that is springably supported.
    Type: Grant
    Filed: November 6, 1990
    Date of Patent: December 17, 1991
    Inventors: William A. Haynes, William M. Haynes
  • Patent number: 5046203
    Abstract: A collapsible hammock support that selectively receives a hammock. The hammock support includes a ground engaging hammock support frame assembly and a rotatably attached hammock shade support frame assembly. The shade support frame assembly can be disposed at various lateral dispositions to selectively orient a sunshade attached thereto.
    Type: Grant
    Filed: September 14, 1990
    Date of Patent: September 10, 1991
    Inventor: Graciela V. O. de Cuadros
  • Patent number: 4784383
    Abstract: A portable swing assembly having a pair of vertically disposed rectangular supports 13, 14 supporting a cross-bar 92 that suspends a porch-type swing 11 therefrom. A horizontal deck 15 is releasably suspended between rectangular supports 13, 14 via screw hooks 31, 31a (FIGS. 4 and 5). A pair of roof panels 16, 17 are supported on vertical roof support(s) 20 with adjustment bars 81, 82 and adjustment screw(s) 87 serving to retain and slidably adjust the relative positions of roof panels 16, 17. Metal corner braces 61 provide positive bracing on the rectangular supports 13, 14 with arch supports 18. The entire swing assembly may be provided in kit form and readily assembled or dismantled by unskilled labor, such as the ordinary homeowner.
    Type: Grant
    Filed: December 9, 1987
    Date of Patent: November 15, 1988
    Inventor: Heywood H. Roberts
  • Patent number: 4757563
    Abstract: A hammock comprising main supporting rods connected together by an extension member, support members connected to the main supporting rods through end connecting members, rod holding members pivotally connected to the end connecting members, a folding shade parasol attached to the rod holding members, and a hammock bed mounted on the connecting members.
    Type: Grant
    Filed: August 28, 1987
    Date of Patent: July 19, 1988
    Inventor: Young N. An
  • Patent number: 4320542
    Abstract: A portable, suspended outdoor shelter includes a base panel having a pair of stiffening members secured in a pair of sleeves disposed along opposed longitudinally extending sides of the base panel. A pair of reinforcing web members extend along and reinforce the sleeves, and extend substantially therebeyond to be secured to a pair of spaced apart support structures such as adjacent tree trunks or boughs. A plurality of resilient, linear tubular members are bent in inverted U configuration and are secured above and between the stiffening members to apply tension laterally to said base panel. End panels extend between the ends of the base panel and the lower portions of their respective reinforcing web members, with a window and a door disposed in the end panels. A canopy extends between the upper edges of the end panels, and is supported by the inverted U tubular members.
    Type: Grant
    Filed: May 27, 1980
    Date of Patent: March 23, 1982
    Inventor: Howard Cohen
  • Patent number: 4221424
    Abstract: A hammock-like portable and collapsible sleeper for use in a motor vehicle having a passenger compartment with doors on opposite sides thereof, which sleeper is adapted to be suspended between the doors and above the seating area in the compartment, includes a fabric body for supporting the user, a stop member adjacent to each of opposite ends of the sleeper body, flexible connecting means interconnecting each of the stop members and the sleeper body and being sufficiently thin for interposition between the tops of the doors and the vehicle body with the doors closed tightly, and means for adjusting the length of the sleeper measured between the stop members. The sleeper is mounted for use with the connecting means interposed between the doors and the body of the vehicle and with the stop members abutting against the outside of the vehicle at the joints between the doors and the vehicle body for supporting the sleeper body in the compartment.
    Type: Grant
    Filed: February 9, 1979
    Date of Patent: September 9, 1980
    Assignee: Martin A. Eiserman
    Inventors: Martin A. Eiserman, Douglas L. Huffer
  • Patent number: 4071917
    Abstract: A hammock includes a bed formed of a supporting sheet gathered at each end and suitable for joinder to spaced anchors. A second sheet forms a canopy over the bed. One side of the canopy is joined to a side of the supporting sheet. The medial portion of the second sheet is supported above the bed by a rope between the anchors. The other side of the second sheet forms an extendable fly for providing additional shelter. A net extends between the medial portion of the second sheet and the other side of the bed. They are joined by a zipper for permitting access to the hammock.
    Type: Grant
    Filed: April 12, 1976
    Date of Patent: February 7, 1978
    Inventor: Hector Mojica
  • Patent number: 4057859
    Abstract: A flexible, tent-like structure, which may be entirely suspended above ground between sturdy tie points, encloses an occupant and provides an improved, cot-like sleeping surface. The structure is triangular in cross section and includes ropes running lengthwise of the structure along its three edges. Each of the three edges is concave when the structure is in an unloaded position. A spreader bar at the head of the structure and a triangular spreader frame at the foot of the structure are the only compression elements used. The structure may be tightly closed and a hole in the sleeping surface provides ventilation for breathing.
    Type: Grant
    Filed: November 11, 1975
    Date of Patent: November 15, 1977
    Inventor: Jeffrey M. Setterholm