CHARLES FREDERICK PEPKA
Pilots at 7 St, Seattle, WA

2013020, Aug 8, 2013

Mar 14, 2013

13/829830

Renton Coil Spring Company - Renton WA, US
Charles F. Pepka - Renton WA, US

F16F 1/12, F16F 3/06

267168, 267179

End mounts are used to secure a helical tension spring to end fixtures with various shapes and sizes. These end mounts contain an inner hole to encase the inner spring end mount and secure the end mount making it like a cap. There is also a keyhole created in the top surface that goes through the end mount allowing it to fit over the fixtures but not over the inner end mount, holding it in place. Grooves are machined in a helical pattern on the cylindrical side wall of the end mount. The spring is wound onto the grooves of the end mount. A friction-resistant coating is applied between components of the assembly to mitigate wear and to prevent bending and twisting.

2011029, Dec 1, 2011

May 27, 2010

12/788501

Charles F. Pepka - Renton WA, US

B60G 15/06, B60G 15/07, F16F 3/04

267225, 267166

The present invention relates to dual-spring assembly that may be employed in cooperation with a damper unit to form a shock absorber. The spring rate of at least one of the springs is adjustable with a preload mechanism, which in turn is movable relative to the damper unit. Further, the dual-spring assembly includes two compression springs arranged in series and each having selected, but different spring rates. The first spring primarily absorbs the energy of applied loads that are below a first amplitude or threshold of applied load. Once the applied loads exceed the first amplitude of applied load, the dual-spring assembly operates with an effective spring rate to absorb the energy of applied loads that exceed the first amplitude of applied load. After a second spring of the dual-spring assembly achieves a desired amount of deflection, the first spring continues to absorb energy from the applied loads.

2012028, Nov 15, 2012

Jun 14, 2012

13/523490

Charles F. Pepka - Renton WA, US

F16F 1/12

267177

The present invention relates to dual-spring assembly that may be employed in cooperation with a damper unit to form a shock absorber. The spring rate of at least one of the springs is adjustable with a preload mechanism, which in turn is movable relative to the damper unit. Further, the dual-spring assembly includes two compression springs arranged in series and each having selected, but different spring rates. The first spring primarily absorbs the energy of applied loads that are below a first amplitude or threshold of applied load. Once the applied loads exceed the first amplitude of applied load, the dual-spring assembly operates with an effective spring rate to absorb the energy of applied loads that exceed the first amplitude of applied load. After a second spring of the dual-spring assembly achieves a desired amount of deflection, the first spring continues to absorb energy from the applied loads.

2013006, Mar 14, 2013

Sep 9, 2011

13/229390

Charles F. Pepka - Renton WA, US

G01M 17/04

73 1104

A shim stack testing apparatus and method of determining a stiffness of the shim stick may be employed to assemble a shim stack kit. The apparatus includes a testing jig that receives either a compression or rebound shim stack. The testing jig may be used with a variety of testing machines capable of determining force versus deflection. The test jig includes a simulated piston rod coupled to a simulated piston valve having apertures. The shim stack being tested may be coupled to the piston at a selected location and then deflected by a pre-determined amount by a loading fixture having elongated prongs. Once the pre-determined deflection is achieved, a corresponding force is identified and then an overall stiffness value for the shim stack is obtained. Tested shim stacks may be assembled into kits with each having an identified stiffness that may be compared to a baseline stiffness value.

2012028, Nov 15, 2012

May 31, 2012

13/485672

Charles F. Pepka - Renton WA, US

F41H 5/04, B23P 11/00

89 3602, 29428, 89913, 89914, 89922, 89917

Protective armor panels comprising a grid formed of a plurality of strips of material having a front edge, a back edge, and side surfaces and a sheet of material secured to the front surface of the grid are disclosed. The strips of material can be contoured to form an armor panel having virtually any arbitrary shape.

2014001, Jan 16, 2014

Sep 23, 2011

13/825257

Charles F. Pepka - Renton WA, US

B60G 13/02, B60G 17/06, B60G 15/04, F16F 7/00, F16F 15/03

267195, 188267, 26714011

Apparatus, systems, and methods for damping movement of a first mass relative to a second mass by magnetically generating induced current are provided. A magnet is coupled to one mass and a nonferrous metallic member is coupled to another mass that moves relative to the first mass. First and second springs are coupled to opposing ends of the magnet, the magnet being positioned between the springs. A guide member channels the magnet as it moves relative to the nonferrous member, the magnet being slidable along the guide member. The magnet is in close proximity to the nonferrous metallic member as the magnet moves. Upon causing movement of the magnet by either mass, the magnet generates an electrical current in the nonferrous metallic member that induces a counter magnetic field that opposes the magnetic field generated by the current to damp movement of the magnet as it moves.