John N Mcmurray

US Patent:

7099843, Aug 29, 2006

Filed:

Mar 14, 2002

Appl. No.:

10/096584

Inventors:

Henry James Cassidy - Arlington VA, US
David Kevin Horne - Arlington VA, US
Tyler Taile Yang - Potomac MD, US
John Patrick McMurray - McLean VA, US

Assignee:

Freddie Mac, The Federal Home Loan Mortgage Co. - McLean VA

International Classification:

G06F 17/60

US Classification:

705 38, 705 35, 705 36 R

Abstract:

The disclosed systems and methods for hedging risk of differential loss related to separate pools of loan investments use criteria established by the parties for hedging risk of differential loss rates. The system monitors indirect performance indicators for a Reference Pool and a Subject Pool of loans, compares the indicators, and calculates a payment due between the parties (if any) based on performance differences for the two pools and a payment formula. Any payment due is paid according to a pre-established payment cycle. The loan pools may be formed and adjusted based on various factors, such as to compensate for changes in one of the pools. The payment formula may also be adjusted to compensate for changes or differences in the loan pools. The system may hedge either party's credit loss related to the Subject Pool if its loans perform differently than the loans in the Reference Pool.

US Patent:

43522190, Oct 5, 1982

Filed:

Apr 7, 1981

Appl. No.:

6/251779

Inventors:

John C. McMurray - Painesville OH
Arthur G. Kudelko - Mentor OH

International Classification:

B21D 5320

US Classification:

10 86A

Abstract:

A tri-lobular, all metal, prevailing torque nut is disclosed providing a cone having three locking sections, each of which extends around the threaded opening for about one-third of the surface of its thread. Each locking section provides a minimum radial distance at its center and extends with gradually increasing radial distance to the ends thereof. When the nut is threaded onto a mating threaded fastener, portions of each locking section are radially displaced from their unstressed condition to the circular shape of the mating fastener, producing frictional engagement between the nut and the fastener to resist unintentional loosening. Each locking section is arranged so that it provides a maximum resistance to deflection at its center and decreasing resistance to deflection at locations progressively spaced from the center so that excessive pressures are not developed which would tend to produce excessive wear or permanent deformation. Consequently, the locking torque or friction is maintained at satisfactory levels, even when the nut is assembled and disassembled with a mating threaded fastener a number of times. The nut is produced by forming a nut blank with a cone having three lobes symmetrically positioned around the cone which are deformed radially inward during staking to produce the locking sections along the threaded passage adjacent to the cone end of the nut.

US Patent:

42201888, Sep 2, 1980

Filed:

Jul 10, 1978

Appl. No.:

5/923330

Inventors:

John C. McMurray - Painesville OH

Assignee:

Russell, Burdsall & Ward Corporation - Mentor OH

International Classification:

F16B 39282

US Classification:

151 37

Abstract:

A self locking threaded fastener is disclosed wherein the self locking system includes a plurality of bearing surfaces contained within a bearing plane and positioned in an annulus around the thread means. Extending inwardly from each bearing surface is a ramp surface which is inclined inwardly and back from the bearing plane. An axially extending shoulder joins one edge of each ramp surface. When the fastener is tightened against a mating part to clamp such part, the engagement causes sufficient pressure to displace material of the mating part by cold flow or other type of displacement into the recesses between the ramp surfaces and shoulders. Continued tightening rotation does not encounter excessive torque since the ramp surfaces provide a camming action but loosening rotation is resisted by the interference between the displaced material and the shoulders. As displacement occurs, additional portions of the ramp surface engages displaced material to increase the effective bearing area and locking interference and provide a self limiting action with respect to the extent the fastener embeds in the mating surface.

US Patent:

42917379, Sep 29, 1981

Filed:

Mar 5, 1979

Appl. No.:

6/017611

Inventors:

John C. McMurray - Painesville OH
Arthur G. Kudelko - Mentor OH

Assignee:

Russell, Burdsall and Ward Corporation - Mentor OH

International Classification:

F16B 39284

US Classification:

411282

Abstract:

A tri-lobular, all metal, prevailing torque nut is disclosed providing a cone having three locking sections, each of which extends around the threaded opening for about one-third of the surface of its thread. Each locking section provides a minimum radial distance at its center and extends with gradually increasing radial distance to the ends thereof. When the nut is threaded onto a mating threaded fastener, portions of each locking section are radially displaced from their unstressed condition to the circular shape of the mating fastener, producing frictional engagement between the nut and the fastener to resist unintentional loosening. Each locking section is arranged so that it provides a maximum resistance to deflection at its center and decreasing resistance to deflection at locations progressively spaced from the center so that excessive pressures are not developed which would tend to produce excessive wear or permanent deformation. Consequently, the locking torque or friction is maintained at satisfactory levels, even when the nut is assembled and disassembled with a mating threaded fastener a number of times. The nut is produced by forming a nut blank with a cone having three lobes symmetrically positioned around the cone which are deformed radially inward during staking to produce the locking sections along the threaded passage adjacent to the cone end of the nut.