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Mitchell, David M.


Primary examiner statistics: 2447 patents; average approval time: 692 days
Assistant examiner statistics: 170 patents; average approval time: 531 days

Patents as Primary Examiner

1                      
NumberTitleIssue Date
6460282Hammer mechanism for firearms
My invention is a new and improved hammer mechanism which reduces the strength of the hammer mainspring without also reducing the hammer's strike force. My invention comprises a link mechanism integrally assembled to the hammer of a firearm. The link mech...
10/08/2002
6453594Apparatus for attaching a supplemental device to a minimally altered host firearm
An interbar assembly (34) for reversibly attaching a supplemental device, e.g., grenade launcher (32), to a host weapon, e.g., rifle (10). A preferred interbar assembly (34) attaches at its forward end to the rifle barrel (16), and at its rearward end to ...
09/24/2002
6453595Gunsight and reticle therefor
An improved telescopic gunsight is provided by combining a conventional telescopic gunsight with a reticle having a primary vertical cross-hair, a primary horizontal cross-hair intersecting the primary vertical cross-hair, a plurality of secondary horizon...
09/24/2002
6446377Sighting device
A sighting device comprises a fiber optic element removably mounted on a support bracket which is adapted for attachment to ventilation rib of a gun. The sighting device is primarily for use in low light conditions and can be readily mounted and removed f...
09/10/2002
6408556Breech block firearm safety device
A breech block firearm safety device for the prevention of injury to children having unauthorized access to loaded firearms. This device will also protect gun owners from injury due to mishandling or the dropping a loaded weapon. The safety device utilize...
06/25/2002
6076885Speaker support bar for use above vehicle headliner
A speaker support bar supports a pair of speakers above a vehicle headliner. The speaker support bar is positioned vertically above the headliner, and thus the uniform appearance of the headliner is preserved. The speaker support bar extends between later...
06/20/2000
6007074Frictionless noncontact engaging drive skate and skateboard
The single-foot drivable skate and skateboard is constituted of the simultaneously steering-driving mechanism, synchronous differential driving mechanism, wheel and board. The simultaneously steering-driving mechanism comprises a universal pedal, the driv...
12/28/1999
5934698Adjustable hitch support
A hitch support mechanism is positionable in a vertical direction to adjust for the hitch height of a trailing vehicle. The hitch support may be adapted to be removably attachable to a receiver fixed to a vehicle. The hitch support may be configured as a ...
08/10/1999
5842730Spare tire storage compartment cover
A spare tire storage compartment cover has at least two sections joined by a living hinge. When the cover is in place over the spare tire storage compartment, it is held in place by a conventional tie-down mechanism that secures the first section in place...
12/01/1998
5829817Vehicle sunshade mounting fastener
An assembly for mounting a vehicle sunshade in a panel opening comprises a first mounting member that receives a sunshade mounting shaft to permit rotation thereof. A second mounting member closely receives the first mounting member. A plurality of resili...
11/03/1998
5820189Vehicle/tent camping system
An "I" tent door configuration (60) is described with pull ties (120). A system for adapting and attaching a tailgate tent (22) to a vehicle (20) having various rear opening (173) configurations is described. This system includes attachment to vehicle (20...
10/13/1998
5816353Engine fuel cut controller
In a fuel cut controller wherein fuel supply is stopped to some cylinders when there is a fuel cut request, an ordinary fuel cut mode and a multi-cylinder fuel cut mode are set. When the ordinary fuel cut mode has continued for a predetermined time, fuel ...
10/06/1998
5810417Automatic safety car seats and sheet-type safety-belt
The automatic seats in a vehicle are designed to minimize the seriousness of car-crash injuries during a frontal collision. When the vehicle collides against the other vehicle or any other stationary objects at a relative velocity of 40 Km/h or up, the ba...
09/22/1998
5810426Arrangement for absorbing vehicle collision energy
An arrangement for absorbing collision energy in a vehicle, preferably a passenger car, incorporating a framework and a forward portion with a wheel housing (24) on each side. A first elongated force-transmitting device (2) with a first end portion (2a), ...
09/22/1998
5806915Support structure for supporting foamable material on hollow structural member
A support structure for supporting a foamable material in a cavity of a hollow structural member so that the foamable material blocks the cavity of the hollow structural member when it is foamed by external heating. The support structure includes a suppor...
09/15/1998
5803201Hydraulic power steering gear assembly with unloading valve
A hydraulic power steering gear assembly includes an assembly body defining a piston chamber having opposed chamber ends with plunger passages formed in the ends, a reciprocating piston and a chamber having opposed ends and a passage extending between the...
09/08/1998
5803517Vehicular bumper beam and method for fabricating the same
A vehicular bumper beam is comprised of a hollow member of high tension steel, which has a front corner portion with an inclined surface. With this arrangement, when a collision energy is applied obliquely to the corner portion of the bumper beam, the col...
09/08/1998
5800024Motor vehicle rear axle and method of producing same
The invention relates to an integral motor vehicle rear axle of the twist-beam axle type, which comprises an opposed pair of longitudinal control arms (2) of a high flexural strength and torsional stiffness for carrying a wheel carrier for a wheel, and a ...
09/01/1998
5797660Automotive wire spoke wheels
A vehicle wheel has an annular rim, a hub, and a plurality of wire spokes coupling the rim and the hub. The rim has an axially extending web provided with tire locating beads. In some embodiments those ends of the spokes joined to the rim extend through t...
08/25/1998
5772274Motorized drive system for a convertible roof of an automotive vehicle
A motorized convertible roof system includes at least a portion of a retractable convertible roof operably driven by an electric motor. The motor is operable to maintain the moved portion of the convertible roof in a predetermined position thereby deterri...
06/30/1998
5772273Spring clip for retaining snap fasteners on a tonneau cover rail
A tonneau cover for a pick-up truck cargo box in which a flexible sheet cover is attached to a frame with snap fasteners. The snap portions carried by the frame rails are slidable there along and can be removed from the rail to change the position of the ...
06/30/1998
5772482Designer deluxe bobbers
The apparatus thus described is composed of a durable thermoplastic which does not lend itself to shrinkage or submerging in water. It can be shaped in a variety offorms of artistry. This Deluxe Bobber can be of a glo-like colorful nature for easy spottin...
06/30/1998
5772223Selectively attachable wheel assembly for a chair
The design shows an axle bar or supporting shaft upon which wheels are mounted. The support bar has a clamping mechanism attached to it next to the wheels. The clamps can tightly grab ahold of the legs of a chair. The chair is then tilted backwards and ro...
06/30/1998
5769486Truck roof mounting system
A reinforced coach joint for joining a roof of a truck to the sidewalls and/or rearwall of the truck involves clamping inwardly projecting flanges of the components to be joined between elongated reinforcing elements. Preferably the reinforcing elements d...
06/23/1998
5769432Lock assembly for in-line skate
A wheel lock assembly for an in-line skate includes an axle assembly for supporting a skate wheel and defining an enclosed cavity, and an actuator assembly comprising an actuator member disposed in the cavity movable by a control member disposed externall...
06/23/1998
5765892Extension apparatus for a vehicle cargo area
The present invention provides an extension apparatus for use with a vehicle having a cargo-bed area with opposing first and second side walls, and a tailgate movable between a vertical orientation and a horizontal orientation. The extension apparatus com...
06/16/1998
5762347System for the lateral adjustment of the shoe and support for skates
System for the lateral adjustment of the wheel chassis of a skate (14) located between a shoe (11) and a support (12) including a removable constraint made of connection element (16) arranged substantially transverse to the direction of advance of the ska...
06/09/1998
5755455Stroller safety device
A stroller includes a pair of handles and a pair of rods slidable relative to each other. A pair of casings are secured on top of the rods for slidably receiving the handles. A pair of posts each has an upper end pivotally coupled to the casing. A retaine...
05/26/1998
5746465Method and apparatus for moving a physically disabled person to and from a driving position within a vehicle
A method and apparatus are provided for transferring a physically disabled person through a vehicle's driver side door opening to and from a driving position behind the steering wheel of the vehicle. The method and apparatus contemplate the use of a seat ...
05/05/1998
5746467Automatic safety car seat using tension springs
The automatic safety seat in a vehicle are designed to minimize the seriousness of car-crash injuries during a frontal collision. When the vehicle collides against other vehicle at a relative velocity of 40 Km/h or up, the backrest is pushed to recline ba...
05/05/1998
5743585Truck cab console with integral trash container
A trash container apparatus is provided integral with a truck cab console. A pivotable trash door is positioned on the cab console to allow access to the inside of the trash container for disposing trash therein. The inner sides of the trash container hav...
04/28/1998
5741052Tractor endless tread
Endless loops spaced lengthwise of elongated grouser-mounting plates of a tractor endless tread in which each loop includes two side-by-side stretches of wire rope having the interstices between the strands of both wire rope stretches filled with elastome...
04/21/1998
5738421Hydraulic chain tensioning means for tensioning the crawler chains of crawler vehicles
A hydraulic chain tensioning means for automatically tensioning the chains of crawler vehicles equipped with two-, four- or eight-wheel articulated suspension means comprises essentially two tensioning cylinders (1.1 and 1.2) and a plurality of valves (3)...
04/14/1998
5732998Drain clip for weather strip and weather strip with a drain clip
The present invention provides a drain clip for use in combination with a weather strip for an automobile to drain water leaked into the weather strip attached to the flange of the body of the automobile, capable of being securely attached to a weather st...
03/31/1998
5730486Truck bed and method of manufacture
An improved vehicle bed assembly with a floor pan having strengthening ribs extending longitudinally throughout the entire length of the floor pan so as to terminate at front and rear edges thereof. The rear edge of the floor pan has a downwardly extendin...
03/24/1998
5727837Multi-part sun visor body for use in a vehicle
In a vehicle sun visor, the sun visor body includes a main foamed plastic body panel having a recess in one surface thereof and a separate injection molded plastic carrier plate fitted into the recess, the recess being shaped for receiving the carrier pla...
03/17/1998
5722713Vehicle arm rest
Herein disclosed is an arm rest which is removably attached to either the window glass and/or the window sill within a vehicle door. It includes a support structure which is either removably or fixedly attached to a moldable bag, with the bag having ergon...
03/03/1998
5713417Method and equipment for fire fighting
The object of the invention is to provide a new method and a new equipment for extinguishing fires especially in engine rooms and similar spaces. The fire is extinguished or at least pressed down by means of concentrated fog sprays with strong penetrating...
02/03/1998
5711571Outer support for bracket automobile sun visors
Outer support bracket for an outer support shaft of an automobile sun visor. The bracket having a mounting member which can be fastened to a surface of the body of the car. An introduction slot is provided between an arm on the mounting member and the mou...
01/27/1998
5711566Container with expandable side walls
A container, such as a transfer trailer, a roll-off container, or other container that can be transported, has expandable side walls. The walls are hydraulically, or otherwise, forced outward to increase the inside width dimension of the container. A load...
01/27/1998
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