US3891208A - Concealed spring anchoring means for trampolines and method of producing same - Google Patents
Concealed spring anchoring means for trampolines and method of producing same Download PDFInfo
- Publication number
- US3891208A US3891208A US370681A US37068173A US3891208A US 3891208 A US3891208 A US 3891208A US 370681 A US370681 A US 370681A US 37068173 A US37068173 A US 37068173A US 3891208 A US3891208 A US 3891208A
- Authority
- US
- United States
- Prior art keywords
- bed
- tape
- tapes
- anchors
- margin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B5/00—Apparatus for jumping
- A63B5/11—Trampolines
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
- A63B21/02—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using resilient force-resisters
- A63B21/023—Wound springs
Definitions
- the anchor bars which connect the springs with the flexible bed of a trampoline are attached to the margin of the bed by a series of short tapes which extend perpendicular to the margin and these short tapes are first attached to a second elongated tape which runs parallel with the margins of the bed and thereafter both tapes are secured to the bed so that if one of the short tapes becomes detached from the bed it will still remain attached to the elongated tape and prevent the spring from flying away.
- the tapes are also positioned to place the ends of the springs and the anchors under the bed and out of possible contact by an acrobat.
- the side frames of the trampoline frame are also strengthened to support a pad over the outer ends of the springs to prevent injury to an acrobat.
- the invention relates to recreational equipment and more particularly to trampolines of the type in which a flexible sheet of material is suspended horizontally by a series of coil springs connected between the margins of the sheet of material and an encircling supporting frame.
- the problem of a spring pulling away from a bed is especially acute in the case of outdoor trampolines because the ultraviolet rays of the sun deteriorate the nylon thread usually used to sew the tapes for the spring anchors to the flexible bed which itself is usually composed of woven polypropylene fibers which are much more resistent to the effects of the sun.
- the problem is accentuated because of the fact that polypropylene thread cannot be used in sewing the tapes to be bed because it does not have the strength of nylon although it is more resistant to the sun.
- Nylon can be made resistant to ultraviolet rays if it is coated with an appropriate material, but the material used for the coating is soluble in contact with the oil which must be used with the large needles required to sew trampoline beds.
- the machines which perform this sewing are usually equipped with an oil reservoir into which the needles are continually dipped to keep them lubricated.
- Another object of the invention is to attach the spring anchor tapes to the bed indirectly by means of an inter mediate tape which extends along the marginal area of the bed in an arrangement such that if an anchor tape and a portion of the intermediate tape pulls away from the bed the remaining tape attached to the bed absorbs the force and holds the weakened portion for a sufficient time to prevent injury to the acrobat.
- Another object of the invention is to minimize the possibility of injuries by arranging the anchor tapes inwardly of the edges of the bed so that the spring anchors and the open ends of the springs connected thereto are covered by the marginal areas of the bed itself.
- a further object of the invention is to provide a sturdier support for the resilient pads which are used to cover the trampoline frame and the springs connected thereto.
- FIG. 1 is a fragmentary partially broken-away plan view of an improved trampoline according to the pres ent invention
- FIG. 2 is an enlarged elevational view partly in section which is taken on the line 2-2 of FIG. 1 and illustrating a pad which is positioned over the springs which are secured to the frame;
- FIG. 3 is a bottom view, facing upwardly, of the showing of FIG. 2;
- FIG. 4 is a perspective of one of the pads before it has been placed in position over the springs
- FIG. 5 is a perspective illustrating a clamping member which is used with the pads
- FIG. 6 is a perspective detail view illustrating the manner in which the anchor tapes are stitched to the intermediate tape which is then stitched to the bed;
- FIG. 7 is an enlarged fragmentary elevational view illustrating a pad positioned over the springs which are secured to the frame, with the pad in elevated position;
- FIG. 8 is a fragmentary perspective of the underside of one end of the pads and illustrating a pair of frameholding brackets which may be used in substitution of or in addition to the pad holding device which is illustrated in FIGS. 4 and 5; and
- FIG. 9 is an elevational view of one of the pads with the brackets shown in FIG. 8 after it has been attached to the frame.
- the numeral 10 indicates a trampoline bed of conventional manufacture which may comprise a rectangular sheet of flexible sheet material, for example, fabric such as heavy cotton or canvas or a closely woven fabric composed of synthetic fibers such as polypropylene, or other substantially non-stretching fibrous material.
- the bed is supported in a horizontal plane by a plurality of resilient members, such as coiled springs 11, spaced at intervals around the margins of the bed and connected at their outer ends to the trampoline frame, indicated generally by numeral 12.
- This frame encircles the bed and comprises an inner section formed from heavy metal tubing to form side sections 13 and end sections 14 (only one of which is shown in the drawings) which may consist of a single tube bent to form rounded corners 15, or the frame may be constructed in sections connected to be telescopically fitted together or the sections may be hinged to allow the trampoline to be dismantled for storage or travelling, as is well known in the art.
- a second metal tubular member 16 spaced outwardly from the tubing 13 and connected to it by cross members 17 at spaced intervals. While the outer member could be extended around the entire periphery of the frame, it is not essential because in the case of an elongated bed the heaviest forces in the springs 11 are exerted generally in the central area of the bed against the side members of the frame.
- the inner members 13 and 14 are provided with rods 18, formed at intervals with loops 19 which can be welded to the frame to space the remainder of the rod away from the frame to provide anchorages for the outer ends of the springs 11 which allows each spring to individually slide along the rod until it finds a position to maintain it at right angles to the margins of the bed.
- the rod therefore, not only stengthens the frame to some extend but, by allowing for individual positioning of each spring, eliminates a serious safety hazard known to trampoline acrobats as bed dance. Briefly stated, this is a phenomenon which produces in the acrobats mind the illusion that the bed is horizontally unstable.
- each of the coil springs is connected to a metal anchor rod 20, the respective ends of which are received in the looped ends 21 of pairs of doubled over fabric tapes 22, as is conventional practice. It has also been the practice, in the past, to sew the doubled over ends of these tapes directly to the hem 23 of the bed in such a position that the looped ends 21, as well as the anchors and the spring ends, project outwardly beyond the edges of the bed, as shown in the abovementioned application Ser. No. 201,376.
- the present invention differs from that disclosed in said prior application in that the tapes 22 are indirectly secured to the trampoline bed and their locations have been changes so that the anchors 20, with the attached ends of the springs 11, are concealed underneath the marginal area of the bed.
- the possibility of injury to an acrobat who lands with one foot beyond the edge of the bed is substantially eliminated.
- the tape 24 is placed on the lower face of the bed 10, adjacent the inwardly turned hem 23 and again one or more rows of stitches 26 are used to secure the tape 24 to the bed. While the hem 23 may be sewed prior to the application of the tape, this need not necessarily be done as a separate operation and, while the stitches used to secure the transverse tapes to the long tape are shown as being spaced apart from the stitches used to apply tape 24 to the bed at uniform distances, this pattern need not necessarily be followed and it should be obvious that no particular pattern stitching need be followed; it could be a zigzag or other irregular pattern.
- the thickness of the block should be sufficient to permit the surface 30 of one side to project downwardly at right angles to the base 28 and to abut against the outer periphery of tubular member 13 and for the opposite surface 31 to project angularly and outwardly downward below the horizontal mid plane of tubular member 16 and to abut against this member at a location below this mid plane, as shown in FIG. 2.
- Such an arrangement will permit the pad to be put in position by placing the surface 31 in contact with the outer tube while the pad is held in a tilted condition, as shown in FIG. 7. The pad is then lowered into the position shown in FIG. 2. Further downward movement, in a clockwise direction, is prevented because the base 28 now rests on tube 13 and angled surface 31 of the block is wedged into contact with the lower portion of tube 16.
- a metal plate 32 having an elongated central slot 33 can be attached to the underside of the block 29, as by means of a pair of wing nuts 34, secured to bolts 35 which pass through the slot 33 and are anchored in the block.
- the plate can be slid back, as in FIG. 7, to remove the pad.
- FIGS. 8 and 9 An alternate means for securing a pad is shown in FIGS. 8 and 9, wherein a pair of heavy metal brackets 36 are attached by screws 37 to the base 28. One end 38 of each bracket extends downwardly at right angles to abut against frame member 13, while the other end 39 is curved to partially enclose the lower surface of frame member 16. Insertion and removal of the pad is accomplished in the same manner as previously described.
- a trampoline of the type comprising a flexible bed supported in horizontally stressed taut condition by a plurality of coil springs connected between an encircling metal frame means and the margins of the flexible bed by means of anchors whose respective ends are received in the loops of spaced pairs of tapes attached to the bed adjacent the margins thereof, the improvement which comprises said pairs of tapes being attached to the underside of said bed at locations spaced inwardly of the adjacent margin to position said anchors and the connected ends of the coil springs below the material comprising the bed and also inwardly of said margin, a distance sufficient for the margin of the bed to cover said anchors and the inner ends of said coils springs while exposing the remaining portions of the spring.
- a trampoline of the type wherein a flexible bed is supported by an encircling frame by means ofa series of coil spring means connected in stressed condition between a series of short tapes secured at spaced inter vals along the marginal areas of the bed and said frame the improvement which consists of a plurality of first securing means respectively connecting each of said short tapes only to an elongated second tape extending along a margin of the bed, and second securing means to attach the second tape extending along the marginal area of the trampoline bed on the underside thereof and thereby to cover and protect said first securing means from exposure to forces acting from above said trampoline bed whereby a failure of the second securing means at a given location will not result in the complete loss of spring support at that location.
- Method of attaching spring anchors to the margin of a trampoline bed comprising the steps of preparing a length of flexible tape to receive a plurality of metal anchors at spaced locations along the length of the tape, and securing said prepared tape to said trampoline bed adjacent a margin thereof.
- said preparing step includes the step of sewing a hem in the margin of the bed simultaneously with sewing said prepared tape to the bed.
- said preparing step includes the step of attaching a series of short lengths of doubled over tapes of said first tape at longitudinally spaced intervals thereof.
- said preparing step includes the step of sewing the first tape to the bed after the short lengths have been sewed to the first tape.
- said preparing step includes the step of sewing short lengths of tape to the first tape at longitudinally spaced intervals to receive said anchors.
- said preparing step includes the steps of doubling over the short lengths of tape to form loops for the receipt of said anchors, and sewing said first tape to the bed.
- said preparing step includes the step of arranging pairs of said short lengths of tape to receive the respective ends of substantially straight anchors parallel to the length of the first tape.
Abstract
Description
Claims (18)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US370681A US3891208A (en) | 1971-11-23 | 1973-06-18 | Concealed spring anchoring means for trampolines and method of producing same |
US05/566,734 US3983585A (en) | 1973-06-18 | 1975-04-10 | Concealed spring anchoring means for trampolines and method of producing same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US20137671A | 1971-11-23 | 1971-11-23 | |
US370681A US3891208A (en) | 1971-11-23 | 1973-06-18 | Concealed spring anchoring means for trampolines and method of producing same |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US20137671A Continuation-In-Part | 1971-11-23 | 1971-11-23 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US05/566,734 Division US3983585A (en) | 1973-06-18 | 1975-04-10 | Concealed spring anchoring means for trampolines and method of producing same |
Publications (1)
Publication Number | Publication Date |
---|---|
US3891208A true US3891208A (en) | 1975-06-24 |
Family
ID=26896687
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US370681A Expired - Lifetime US3891208A (en) | 1971-11-23 | 1973-06-18 | Concealed spring anchoring means for trampolines and method of producing same |
Country Status (1)
Country | Link |
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US (1) | US3891208A (en) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3983585A (en) * | 1973-06-18 | 1976-10-05 | Sidlinger Bruce C | Concealed spring anchoring means for trampolines and method of producing same |
US4139192A (en) * | 1976-09-17 | 1979-02-13 | Mcneil Harold L | Round trampoline with U-shaped leg |
US4452444A (en) * | 1981-08-03 | 1984-06-05 | Imagination Properties, Inc. | Rebound exerciser |
US5967943A (en) * | 1997-11-26 | 1999-10-19 | Rich; Rolland Wayne | Trampoline with elastic frame attachment system |
US6139474A (en) * | 1998-01-14 | 2000-10-31 | F. F. Acquisition Corp. | Trampoline safety pad |
US6237169B1 (en) * | 1999-10-18 | 2001-05-29 | Lai Fen Ying | Foldable trampoline |
WO2005035071A1 (en) * | 2003-10-15 | 2005-04-21 | Board & Batten International Inc. | Improved trampoline mat for soft-edged trampolines |
US20050227812A1 (en) * | 2004-04-12 | 2005-10-13 | James Thomas A | Trampoline mat and method of making same |
US7431679B1 (en) * | 2007-03-02 | 2008-10-07 | Rose M Tageant | Dual purpose home apparatus |
US9089732B2 (en) | 2011-06-09 | 2015-07-28 | Vuly Trampolines Pty, Ltd. | Trampolines |
US20160296782A1 (en) * | 2013-12-10 | 2016-10-13 | Xiaoping Tang | Connecting Structure Between Trampoline Bed and Frame, and Trampoline and Connecting Piece Using Same |
US9486658B2 (en) | 2001-11-20 | 2016-11-08 | Board & Batten International Inc. | Edge fittings for soft-edged trampoline |
US10124198B2 (en) * | 2014-10-19 | 2018-11-13 | Kristofer Haggerty | System for relocating the elastic force on a trampoline |
US10307628B2 (en) * | 2017-06-07 | 2019-06-04 | Xiamen Dmaster Health Tech Co., Ltd. | Trampoline with hanging seat units that allows elastic ropes to be mounted easily |
CN112105422A (en) * | 2018-03-16 | 2020-12-18 | 图恩斯有限公司 | Trampoline |
US11285370B2 (en) * | 2019-05-13 | 2022-03-29 | Rush Company, Inc. | Trampoline frame pads |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1347413A (en) * | 1920-02-26 | 1920-07-20 | Peter C Schaefer | Auto-porch bed |
US1549934A (en) * | 1923-05-01 | 1925-08-18 | Vanek Frank | Convertible camp furniture |
US1583300A (en) * | 1925-10-08 | 1926-05-04 | Mcternen Andrew | Chair-repairing device |
US2370990A (en) * | 1941-06-04 | 1945-03-06 | George P Nissen | Tumbling device |
-
1973
- 1973-06-18 US US370681A patent/US3891208A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1347413A (en) * | 1920-02-26 | 1920-07-20 | Peter C Schaefer | Auto-porch bed |
US1549934A (en) * | 1923-05-01 | 1925-08-18 | Vanek Frank | Convertible camp furniture |
US1583300A (en) * | 1925-10-08 | 1926-05-04 | Mcternen Andrew | Chair-repairing device |
US2370990A (en) * | 1941-06-04 | 1945-03-06 | George P Nissen | Tumbling device |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3983585A (en) * | 1973-06-18 | 1976-10-05 | Sidlinger Bruce C | Concealed spring anchoring means for trampolines and method of producing same |
US4139192A (en) * | 1976-09-17 | 1979-02-13 | Mcneil Harold L | Round trampoline with U-shaped leg |
US4452444A (en) * | 1981-08-03 | 1984-06-05 | Imagination Properties, Inc. | Rebound exerciser |
US5967943A (en) * | 1997-11-26 | 1999-10-19 | Rich; Rolland Wayne | Trampoline with elastic frame attachment system |
US6264583B1 (en) | 1997-11-26 | 2001-07-24 | Rolland Wayne Rich | Trampoline with elastic frame attachment system |
US6139474A (en) * | 1998-01-14 | 2000-10-31 | F. F. Acquisition Corp. | Trampoline safety pad |
US6237169B1 (en) * | 1999-10-18 | 2001-05-29 | Lai Fen Ying | Foldable trampoline |
US9486658B2 (en) | 2001-11-20 | 2016-11-08 | Board & Batten International Inc. | Edge fittings for soft-edged trampoline |
US9656110B2 (en) | 2001-11-20 | 2017-05-23 | Board & Batten International Inc. | Edge fittings for soft-edged trampolines |
WO2005035071A1 (en) * | 2003-10-15 | 2005-04-21 | Board & Batten International Inc. | Improved trampoline mat for soft-edged trampolines |
US20050227812A1 (en) * | 2004-04-12 | 2005-10-13 | James Thomas A | Trampoline mat and method of making same |
US7431679B1 (en) * | 2007-03-02 | 2008-10-07 | Rose M Tageant | Dual purpose home apparatus |
US9089732B2 (en) | 2011-06-09 | 2015-07-28 | Vuly Trampolines Pty, Ltd. | Trampolines |
US20160296782A1 (en) * | 2013-12-10 | 2016-10-13 | Xiaoping Tang | Connecting Structure Between Trampoline Bed and Frame, and Trampoline and Connecting Piece Using Same |
US9889328B2 (en) * | 2013-12-10 | 2018-02-13 | Xiaoping Tang | Connecting structure between trampoline bed and frame, and trampoline and connecting piece using same |
US10124198B2 (en) * | 2014-10-19 | 2018-11-13 | Kristofer Haggerty | System for relocating the elastic force on a trampoline |
US10307628B2 (en) * | 2017-06-07 | 2019-06-04 | Xiamen Dmaster Health Tech Co., Ltd. | Trampoline with hanging seat units that allows elastic ropes to be mounted easily |
CN112105422A (en) * | 2018-03-16 | 2020-12-18 | 图恩斯有限公司 | Trampoline |
CN112105422B (en) * | 2018-03-16 | 2021-09-10 | 图恩斯有限公司 | Trampoline |
US11285370B2 (en) * | 2019-05-13 | 2022-03-29 | Rush Company, Inc. | Trampoline frame pads |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: NEW SIDLINGER PRODUCTS CO., A CORP. OF TX, TEXAS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:SIDLINGER PRODUCTS CO.;REEL/FRAME:005065/0403 Effective date: 19890321 Owner name: NEW SIDLINGER PRODUCTS CO., A CORP. OF TX, TEXAS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:SIDLINGER PRODUCTS CO.;REEL/FRAME:005065/0406 Effective date: 19890317 |
|
AS | Assignment |
Owner name: SIDLINGER, JOANNE Free format text: MORTGAGE;ASSIGNOR:SIDLINGER PRODUCTS CO., INC.;REEL/FRAME:005221/0251 Effective date: 19761112 Owner name: SIDLINGER, BRUCE C. Free format text: MORTGAGE;ASSIGNOR:SIDLINGER PRODUCTS CO., INC.;REEL/FRAME:005221/0251 Effective date: 19761112 |
|
AS | Assignment |
Owner name: SIDLINGER PRODUCTS CO., INC., A CORP. OF TX. Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:SIDLINGER, BRUCE C.;SIDLINGER, JOANNE;REEL/FRAME:005253/0249 Effective date: 19761112 |