Mark W Johnson
General Contractor in Sandy, UT

8011364, Sep 6, 2011

Feb 20, 2008

12/034617

Mark R. Johnson - Sandy UT, US

B63C 11/16, B63C 11/02, B63C 11/00, B63C 11/10, A62B 18/10, F16K 15/00

12820111, 21820111, 21820127, 21820128, 405185, 405186, 405187, 1375124, 13751627

An underwater breathing device, such as a snorkel, may include an exhalation valve. The exhalation valve is configured to produce positive end-expiratory pressure in the airway of a user of the underwater breathing device. The exhalation valve includes a plate defining an exhalation port and at least one chamber port, an exhalation conduit connected to the exhalation port, and a flexible membrane that is sealable against a surface of the plate. A lower portion of the exhalation conduit is divided by a septum which divides the exhalation conduit and the exhalation port into a first exhalation port connected to a first exhalation conduit and a second exhalation port connected to a second exhalation conduit. The flexible membrane is sized and positioned to be capable of sealing the first exhalation port and the second exhalation port.

8011363, Sep 6, 2011

May 18, 2006

11/437113

Mark Johnson - Sandy UT, US

B63C 11/02, B63C 11/16, B63C 11/10, F16K 31/12, F16K 15/00, F16K 15/14

12820111, 12820029, 405186, 405187, 137510, 13751215, 137854

An underwater breathing device, such as a snorkel, may include an exhalation valve. The exhalation valve is configured to produce positive end-expiratory pressure in the airway of a user of the underwater breathing device in order to reduce the overall work of underwater breathing. The exhalation valve includes a plate defining an exhalation port. The exhalation valve also includes a flexible membrane that is sealable against a surface of the plate and is sized and positioned to be capable of sealing the exhalation port. The flexible membrane is configured to have a sealed position in which the flexible membrane seals the exhalation port such that substantially no exhaled air escapes the snorkel. The flexible membrane is also configured to have an unsealed position in which exhaled air escapes the snorkel.

7793656, Sep 14, 2010

Jun 3, 2003

10/453462

Mark Johnson - Sandy UT, US

Lifetime Products, Inc. - Clearfield UT

B63C 11/10, B63C 11/16, B63C 11/02, A62B 18/10, A62B 9/02, B63G 8/40

12820111, 12820127, 12820128, 12820524, 12820029, 114327, 405186, 405187

A swim and skin-dive snorkel for providing positive end-expiratory pressure for pressure-balanced exhalation. The snorkel may include inhalation and exhalation conduits. Air can be exhaled into a chamber and released when exhalation pressure within the chamber exceeds a threshold pressure. The threshold pressure that must be overcome to achieve exhalation may be balanced against the compressive forces of the ambient water pressure acting against the user's chest and lungs, which may greatly reduce the resting expiratory flow rate, the minute respiratory rate, and therefore the overall work of breathing. The exhalation pressure may be linearly matched to the ambient water pressure as a function of dive depth, thereby discouraging exhalation while diving. A purge valve may also be placed at the lower aspect of the snorkel.

2011010, May 5, 2011

Nov 3, 2010

12/939053

Mark R. Johnson - Sandy UT, US

A63B 31/12

441 60

Retractable swim fins that attach to the legs of a swimmer to aid movement through the water. In one example embodiment, a retractable swim fin includes an upper support frame, a lower support frame, and a sliding assembly connecting the upper support frame to the lower support frame. The upper support frame is configured to be attached to the front of a swimmer's lower leg. The lower support frame includes means for aquatic propulsion and is configured to extend, in a swimming position, to a position beneath the sole of the swimmer's foot. The lower support frame is also configured to retract, in a walking position, to a position above the sole of the swimmer's foot. The walking position enables the swimmer to walk barefoot on a surface without the lower support frame substantially contacting the surface. The sliding assembly is configured to allow the lower support frame to retract.

8297318, Oct 30, 2012

Oct 11, 2005

11/248900

Mark Johnson - Sandy UT, US

F16K 15/14

137854, 13751617, 137526

A check valve made up of a substantially rigid portion and a substantially flexible membrane that is generally dome shaped. The substantially rigid portion includes one or more spokes that meet in the center of the rigid portion and one or more partial spokes extending part way to the center of the rigid portion. The dome shaped, substantially flexible membrane also includes one or more flexible spokes and one or more collapse zones. The completed check valve is made by connecting a center portion of the substantially rigid portion to a center portion of the dome shaped, substantially flexible membrane.

7823585, Nov 2, 2010

Oct 6, 2005

11/244522

Mark Johnson - Sandy UT, US

B63C 11/16, B63C 11/02, A62B 9/04, A62B 18/08, F16L 33/02, A41F 1/00, A44B 1/04

12820111, 12820127, 12820227, 12820126, 128912, 24339, 24530, 24531, 24545, 24556, 24564, 24570, 405186, 405187

A snorkel clip made up of two substantially rigid elements, which are designed to wrap at least half way around a snorkel tube, overmolded with a substantially flexible element to create a simple, aesthetically pleasing device. The snorkel clip also includes a hinge region created as part of the substantially flexible element. This hinge region allows the snorkel clip to flex or bend so that one of the rigid elements may be disengaged and pulled away from the riser tube of the snorkel, so that a mask strap may be attached to and removed from the snorkel, while the other rigid element remains attached to the riser tube in a generally secure manner. The substantially flexible portion may also include several cut out sections to provide visual and tactile access to portions of the substantially rigid elements for utility and aesthetic design.

2008009, May 1, 2008

Oct 24, 2007

11/923423

Mark Johnson - Sandy UT, US

B63C 11/20

128201110

A snorkel clip that includes a pair of attachment arms connected to opposing sides of an attachment base, a pair of retention arms connected to opposing sides of a retention base, and a connecting member connecting the attachment base to the retention base. The attachment base and the attachment arms are cooperatively configured to wrap more than half way around a riser tube of a snorkel. The retention base and the retention arms are cooperatively configured to wrap at least partially around the riser tube of the snorkel. While the attachment arms and the retention arms are at least partially wrapped around the riser tube of the snorkel, the snorkel clip is configured to cooperate with the riser tube to define a strap retention space capable of retaining a strap of a mask.

2010007, Mar 25, 2010

Sep 23, 2009

12/565675

Mark R. Johnson - Sandy UT, US

A63B 31/08, A63B 31/12

441 64

Swim fins that attach to the legs of a swimmer to aid movement through the water. In one example embodiment, a swim fin includes an upper support frame, a lower support frame, a lower blade attached to the lower support frame, and at least one hinge assembly connecting the upper support frame to the lower support frame. The upper support is configured to be generally positioned along and attached to the front of a swimmer's lower leg between the swimmer's knee and ankle The lower support frame is configured to extend, in a swimming position, from a position proximate the swimmer's ankle to a position beyond the end of the swimmer's foot. The at least one hinge assembly allows the lower support frame to be rotated upward from the swimming position to a walking position. The walking position enables the swimmer to walk barefoot on a surface without the lower support frame nor the lower blade substantially contacting the surface.