SELF-SECURING ROLL HOLDER AND METHOD

Abstract

A self-securing roll holder for easily exchanging rolls of sheet material. The holder comprises a mounting bracket, a mounting stanchion, a support, and a cap. The cap is pivotally connected to the support with a resilient retaining assembly. The cap has dimensions that allow the cap to act as a retainer in one position and, when moved to a second position, allow rolls of sheet material to be mounted and dismounted from the support. The retaining assembly further comprises a piston, a piston guide, a spring, and a pivot pin all of which are located inside the support. The cap is pivotally connected to the retaining assembly thereby maintaining forcible contact with the support and retaining rolls of sheet material on the support in one position until moved to a second position to exchange rolls.

Claims

1. A self-securing holder attached to a wall for retaining and releasing a paper roll comprising: a support configured to be attached to and extending from the wall; a piston guide attached to the support; a piston slidably engaged with the piston guide; a cap pivotally connected to the piston; and, a biasing member, providing a bias between the piston guide and the piston, biasing the piston away from the cap.

2. The self-securing holder of claim 1, wherein the piston has a cross sectional shape which is one of the group consisting of round, square, hexagon, rectangle and oval.

3. The self-securing holder of claim 1 further comprising; a slot in the support engaged with a facing support extending from the cap when the cap is pivoted with respect to the support.

4. The self-securing holder of claim 1 holder of claim 1 wherein the paper roll has a diameter and wherein the cap further comprises: a first dimension greater than the diameter; and, a second dimension less than the diameter.

5. The self-securing holder of claim 1, wherein the cap rotates through an angle between a first position and a second position, wherein the angle is between about 80 and about 100.

6. The self-securing holder of claim 1 wherein the cap may be moved between a first position retaining the paper roll and a second position releasing the paper roll. The self-securing holder of claim 1, further comprising: a damper connected to the piston guide and the piston.

8. The holder of claim 1, wherein the biasing member is one of the group consisting of a helical spring, a compression spring, a tension spring, a resilient annular ring and a magnet.

9. A method of exchanging a first paper roll retained on a support with a second paper roll, the support configured to be mounted to a wall, a piston guide attached to the support and slidably engaged with a piston, a cap pivotally connected to the piston and adjacent the support, and a biasing member providing a bias on the piston relative to the support, comprising: extending the cap from the support against the bias; rotating the cap in a first direction relative to the support; removing the first paper roll from the support; supporting the second paper roll on the support; rotating the cap in a second direction relative to the support; and, releasing the cap such that the bias positions the cap adjacent the support.

10. The method of claim 9 further comprising: engaging a slot in the support with the cap.

11. The method of claim 9 further where a damper is connected to the piston and the support, wherein the step of releasing the cap further comprises: damping the bias with the damper.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The disclosed embodiments will be described with reference to the accompanying drawings. Like pieces in different drawings carry the same number.

[0018] FIG. 1A is a side view of a preferred embodiment.

[0019] FIG. 1B is detail view showing the cap and retaining assembly of a preferred embodiment.

[0020] FIG. 1C is a side view of a preferred embodiment.

[0021] FIG. 2 is a cross-sectional view of a preferred embodiment of the cap.

[0022] FIG. 3A is a side view of the holder with the cap in a displaced first position ready to be pivotally rotated to a second position.

[0023] FIG. 3B is a detail view of a preferred embodiment.

[0024] FIG. 4A is a side view of the cap in an open position to allow mounting and dismounting of a roll of sheet material.

[0025] FIG. 4B is a detail view of the cap in an open position.

[0026] FIG. 5A is a partial section view of a preferred embodiment of the retaining assembly.

[0027] FIG. 5B is a partial section view of a preferred embodiment of the retaining assembly.

[0028] FIG. 5C is a partial section view of a preferred embodiment of the retaining assembly.

[0029] FIG. 5D is a partial section view of a preferred embodiment of the retaining assembly.

[0030] FIG. 5E is a partial section view of a preferred embodiment of the retaining assembly.

[0031] FIG. 6A is a partial section view a preferred embodiment of the cap and the retainer pin pivotally connected with the pivot pin.

[0032] FIG. 6B is a partial section view of a preferred embodiment of the cap and the retainer pin pivotally connected with the pivot pin.

DETAILED DESCRIPTION

[0033] Referring to FIGS. 1A through 1C, mounting bracket 100 supports mounting stanchion 200, support 300, and cap 400. Mounting bracket 100 is generally mounted to a flat wall surface 101 with fasteners 205. Mounting stanchion 200 has a first end 201 and a second end 202. First end 201 is rigidly attached to mounting bracket 100. Second end 202 is removably attached to securing collar 204. Securing collar 204 includes hole 206. Support 300 is secured to mounting stanchion 200 in hole 206. Securing collar 204 is adapted to receive a fastener 203 in hole 207. Fastener 203 is a conventional fastener such as a set screw. Decorative cap 304 is removably fitted to support 300. The length of mounting stanchion 200 is sufficient so that support 300 is placed at a distance so that a full roll of sheet material 410 when mounted on support 300 can freely rotate about support 300. Second end 302 includes slot 303. Support 300 may be oriented in securing collar 204 in left-hand and right-hand orientations. In the left-hand orientation, the support extends farther to the left of the securing collar. In the right-hand orientation, the support extends farther to the right of the securing collar. Support 300 can also be positioned in securing collar 202 at variable angles about its axis, thereby establishing a change in the rotation plane of cap 400 as will be further described.

[0034] Referring to FIG. 1B, cap 400 is secured in second end 302 by retaining assembly 399, which is located inside support 300. Cap 400 comprises facing 401 and facing support 402. Facing support 402 extends generally perpendicularly from facing 401 having first width 405, angled reduction 404, and second width 406. First width 405 is provided to strengthen the cap to resist fractures at the interface of facing 401 and facing support 402. Angled reduction 404 provides sufficient clearance to allow rotation of the cap without interference with support 302.

[0035] First width 405 includes top surface 405A and bottom surface 405B. Axis 900 is positioned distance 407 from top surface 405A and distance 406 from bottom surface 405B. In a preferred embodiment, distance 407 is greater than distance 406. Fixture surfaces of cap 401 extend to distance 903 from the outer surface of support 300. These dimensions are preferred but not critical.

[0036] The retaining assembly comprises a spring 501, a piston guide 502, a piston 503, and a pivot pin 508. Piston 503 includes flange 504 integrally formed with piston rod 505. In a preferred embodiment, the cross-section of the piston rod is rectangular to prevent axial rotation of the piston. In other embodiments, square, hexagonal and oval cross sections are employed. As will be recognized, other cross-section shapes that prevent axial rotation will also suffice. Piston guide 502 is rigidly attached to the inside surface of support 300 with a suitable adhesive. A press fit or crimp may also be employed with success. Piston guide 502 includes hole 510. In a preferred embodiment, the hole is rectangular to receive the piston rod. However, other shapes will suffice which cooperate with the shape of the piston rod to prevent axial rotation of the piston rod. Piston rod 505 is positioned in hole 510 and is sized to allow a sliding motion of the piston rod along its longitudinal axis. The piston guide is provided of sufficient width to constrain the piston rod to axial motion only. Flange 504 has a diameter greater than hole 510. Spring 501 surrounds piston rod 505 and urges flange 504 away from piston guide 502. In one preferred embodiment, spring 501 demonstrates a 3 lb/inch spring constant. Spring constants of between about 0.5 lb/inch and 10 lb/inch are preferred.

[0037] Referring to FIG. 2, facing 401 has first dimension 404 that is less than the diameter of core 411 of the roll of sheet material. Second dimension 403 is greater than the diameter of core 411. Facing 401 retains a roll of sheet material by the interference of second dimension 403 with the roll.

[0038] Referring to FIGS. 3A and 3B, directional force 800 of approximately 3 pounds is applied to cap 400, thus displacing cap 400 from a first position 600 to an intermediate position thereby compressing spring 501. Force 800 displaces cap 400 by a distance 601, which is sufficient to allow cap 400 to be rotated about pivot pin 508.

[0039] Referring to FIGS. 4A and 4B, cap 400 is shown rotated from its intermediate position at angle 700 to its second position at angle 701. Angle 700 and angle 701 are separated by an angular displacement . In a preferred embodiment, angular displacement a is about 80 to 100. Angle defines a plane of rotation. The plane of rotation may be varied by repositioning the support in the collar.

[0040] In the second position, facing support 402 rests in slot 303. While at second position, a roll of sheet material 410 can either be mounted or dismounted by sliding it over cap 400 and onto support 300.

[0041] To return the cap from its second position to its first position, an opposite rotational force is applied to the cap, dislodging the support from slot 303. Spring 501 urges piston 503 rearwards, thereby rotating the cap into its intermediate position, through interference between the piston guide and the facing support. Once in the intermediate position, the bias provided by spring 501 automatically returns the cap of the intermediate position to the firs position.

[0042] In a preferred method of use, one hand is used to hold the roll of paper, while using one or more fingers of the same hand to move the cap from its first position to its second position. The roll may then be loaded and the same hand may be used to return the cap from the second position to the first position.

[0043] Neither the roll nor any part of the holder need be temporarily placed on a potentially unsanitary surface.

[0044] Referring to FIG. 5A, spring 501 is secured to retainer base 509 with securing bracket 520. Spring 501 is further secured to flange 504 with a securing bracket 521. Piston rod 505 slidingly moves through piston guide 502. Spring 501 applies a biasing force between retainer base 509 and flange 504.

[0045] Referring to FIG. 5B, flange 590 is integrally formed with piston rod 505 in a central position. Spring 501 is secured to flange 590 with securing bracket 595, and to piston guide 502 with securing bracket 596. Spring 501 applies a biasing force between piston guide 502 and flange 590.

[0046] Referring to FIG. 5C, resilient retainer 598 is an annular ring which is formed of an elastomeric material, such as neoprene, and is shown positioned around the piston rod between flange 504 and piston guide 502. Other resilient materials will suffice.

[0047] Referring to FIG. 5D, damper 530 is secured between piston guide 502 and flange 504. Damper 530 in a preferred embodiment is a fluid-filled piston/cylinder arrangement which slows the movement of the piston rod as induced by spring 501. In use, the damper prevents the cap from snapping into place against the support when rotated from its second position to its first position.

[0048] Referring to FIG. 5E, magnet 597 is secured to flange 504. Magnet 598 is secured to retainer base 509. Magnet 597 is secured to flange 504 through adhesive or other means known in the art. Magnet 598 is secured to retainer base 509 through adhesive or other means known in the art. From left to right, magnet 597 is orientated in a north-south position; magnet 598 is orientated in a south-north position. Opposite orientations will suffice. Piston 505 slidingly moves through piston guide 502. Magnet 597 and magnet 598 apply a bias force between retainer base 509 and flange 504.

[0049] Referring to FIG. 6A, piston 503 includes two extensions 605 forming a notch 607. Facing support 402 includes extension 609 which is fitted within notch 607. Extension 605 includes hole 619. Extension 607 includes hole 621. When assembled, pin 508 fits through hole 619 and hole 621 to form a pivotal joint between facing support 402 and piston 503.

[0050] Referring to FIG. 6B, piston 503 includes extension 611 and notch 615. Facing support 402 includes support 613 and notch 617. Extension 613 includes hole 623. Extension 611 includes hole 625. When assembled, pin 508 fits into hole 623 and hole 625, thereby pivotally joining piston 503 with facing support 402.

[0051] Mounting bracket 100, mounting stanchion 200, support 300, cap 400, piston 503, and retainer base 509 in the preferred embodiment are formed of a light aluminum magnesium oxide. However, other rigid materials can be used such as polyvinyl chloride plastics or suitable durable materials as known in the art. The pivot pin and the helical spring are formed of spring steel.

[0052] It will be appreciated by those skilled in the art that modifications can be made to the embodiments disclosed and remain within the inventive concept. Therefore, this invention is not limited to the specific embodiments disclosed, but is intended to cover changes within the scope and spirit of the claims.