U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

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Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.

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Calvert, John J.


Primary examiner statistics: 2555 patents; average approval time: 2554 days
Assistant examiner statistics: 578 patents; average approval time: 539 days

Patents as Assistant Examiner


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NumberTitleIssue Date
5295913Device for coupling a winding shaft pin with a drive shaft pin
In a device for coupling a winding shaft pin with a drive shaft pin, the latter is provided with a radial recess, in which the winding shaft pin is held by a latching means in such a manner as to prevent relative rotation. In order to ensure centered runn...
03/22/1994
5295268Handscock for cold weather golfing
This invention teaches a thermally insulated handsock for a golfer's hand for personal comfort when the golfer moves between consecutive golf shots during cold weather golfing, and further can be reliably secured to the golf bag, pull cart handle or ridin...
03/22/1994
5293676Intermingled multifilament yarn comprising high modulus monofilaments and production thereof
There is described an intermingled multifilament yarn comprising high modulus monofilaments made for example of aramid, carbon or glass and a process for producing this yarn. Conventional air intermingling is impracticable for high modulus yarns since the...
03/15/1994
5291756Knitting machine with needle selecting device
The knitting machine with needle selection device has a plurality of needles or sub-needles each having a body with at least one magnetized portion. A selection element faces the magnetized portion and is constituted by a plate which is physically separat...
03/08/1994
5290092Stowaway armrest
A stowaway armrest for a seat assembly for a vehicle which is pivotable about a single pivot on a seat back between a normal horizontal use position adjacent the side of the seat assembly and a horizontal stowed position behind the seat back. The single p...
03/01/1994
5289783Weightable table unit
A table unit particularly adapted for use in a correctional environment includes a base prepared to be filled with ballast. The base has a hollow core member that fits into an inner space of an outer shell member. A sidewall of the core member is spaced i...
03/01/1994
5289617Spreading and lap-forming machine
A web of fibers (4) is conveyed by conveyor-belts (2, 5) which pass around rollers. A number of rollers are carried by an input carriage (10) and an output carriage (14), said carriages being capable of displacement in reciprocating motion above an apron ...
03/01/1994
5289618Apparatus for making a nonwoven web
An apparatus for making a nonwoven web has a carding drum (1), a continuously moving, air-permeable collecting surface member (2) for collecting fibers which fly in an entraining air stream from the carding drum (1), a suction box (4), connected to the co...
03/01/1994
5289701Method of determining sleeve and body patterns
A method for determining a sleeve and body pattern so that each sleeve is the same vertically as related to the body. The body is arranged so that the vertical height of an armhole between a shoulder point and an underarm point is equal in height of a set...
03/01/1994
5287600Method and a device for controlling an opening process, for example at a card
A method of controlling the opening of a fiber feed at an opening machine like a cleaning machine or a card, in which an opening element is moved past a fiber feed for loosening and taking over of fibers; simultaneously attenuating the fiber feed; determi...
02/22/1994
5287690Stainless steel yarn
Cut resistant, abrasion resistant and electrically conductive yarns (1) are formed in torque-free form from stainless steel and other metallic yarns (2) served with or formed into composite twists with non-metallic yarns and fibers (4) and (5). The metall...
02/22/1994
5287709Stitch density adjusting device of circular knitting machine
In a stitch density adjusting device of a circular knitting machine for knitting stockings, panty hose, tights and so on, a needle cylinder is moved up and down for adjusting the density of the stitches being formed. In order to move the needle cylinder u...
02/22/1994
5286232Slip yoke assembly for output of power transmission device
An annular propeller shaft (10) for transmitting torque from an automotive ehicle transfer case to the rear axle of the vehicle, the propeller shaft having an internal spline (16) which receives an externally splined portion (18a) of a drive shaft (18) at ...
02/15/1994
5285662Single-cylinder circular knitting machine for manufacturing socks and stockings or the like
The single-cylinder circular knitting machine has a vertically arranged needle cylinder with a skirt defining a plurality of axial grooves. Each groove slidingly accommodates a needle. A platen is arranged coaxially above the needle cylinder, and a plural...
02/15/1994
5285663Rolling and discharging device of knitted fabric on circular knitting machine and its controlling method
Knitted fabric produced by a circular knitting machine passes downwardly to a fabric winding unit that rotates synchronously with the knitting unit and that includes fabric delivery rolls and a fabric winding shaft that are driven by rotation of the unit....
02/15/1994
5286231Flexible elastomer coupling element
A flexible member for coupling a driving member to a driven member is an elastomer element formed with a plurality of integrally formed segments of tapering cross sectional area and is provided at the intersections of the segments with connecting elements...
02/15/1994
5285552Location determining device for a travelling bale opener
A bale opener for removing fiber tufts from top surfaces of fiber bales assembled in a series includes a carriage for travelling back-and-forth along a generally horizontal, first path of travel along the fiber bale series; a tower mounted on the carriage...
02/15/1994
5285554Spreading and lap-forming machine
A web of fibers (4) is conveyed by conveyor-belts (2, 5) which pass around rollers (32 to 43, 60 to 69). Some of these rollers are carried by main carriages (10, 14) which are capable of displacement in reciprocating motion above an apron (8) which moves ...
02/15/1994
5285661Tubular textile insert for strengthening material and a mechanism for its production
A tubular textile insert for strengthening material is made of a stack of successive layers of parallel and interlinked threads. More particularly, there is a first-direction layer defining a cylindrical shape and form by several parallel threads arranged...
02/15/1994
5284455Shaft coupling having multiple rib connectors
On a mount member 6 at the side of the driving shaft, slide members 10a, 10b at the side of the driving shaft are each mounted and, on a mount member 8 at the side of the driven shaft, slide members 12a, 12b at the side of the driven shaft are each mounte...
02/08/1994
5284034Patterned fabric and machine and method for making the fabric
A warp knitted fabric has threads of a ground thread system forming a fabric ground. A pattern thread system also forms different patterned areas both in the weft direction as well as in the warp direction. In a basis area there is provided either cloth l...
02/08/1994
5284031Knit ply fabric with connecting layer
In the fabric structure (10.1) which can be produced in one piece on a two-bed flat-bar knitting machine, a first fabric web (11.1) and a second fabric web (12.1) are connected to one another by means of at least one third fabric web (13.1), a knitted con...
02/08/1994
5284030Flat knitting machine stop motion assembly
In a flat knitting machine equipped with a manually movable handlebar (11) which is oriented parallel to a needle bed, the eccentrically mounted handlebar (11) is connected to a pivoting lever (15) which is the carrier of an armature (19) for a stationari...
02/08/1994
5282294Apparatus for producing layered material
An apparatus is disclosed for producing a band of rectangular cross section having at least two layers of material. The apparatus includes means for advancing a first band along a predetermined linear path and means for guiding a second band into layered ...
02/01/1994
5282371Circular knitting machine with magnetic actuated needle selection
The invention relates to a circular knitting machine comprising a stationary hollow cylinder, a rotor disposed within the stationary hollow cylinder and adapted to revolve in coaxial relation with the stationary hollow cylinder, a plurality of coils dispo...
02/01/1994
5282372Apparatus and method for flushing debris from the cylinder slots of circular knitting machines
An apparatus and method for flushing lint and other debris from the cylinder needle and sinker rest ring slots of a circular knitting machine utilizes a pair of nozzles disposed closely adjacent the upper end of the cylinder to inject into the slots from ...
02/01/1994
5280713Yarn feed device for knitting machine having separator means for hosiery fabric
An apparatus which provides for servo regulation of a yarn furnisher for a circular knitting machine which permits the knitting machine to operate at a higher speed, controls and varies the tension of the yarn supplied to a knitting machine, and provides ...
01/25/1994
5279133Circular knitting machine for making plush fabric
The invention concerns a circular knitting machine for making plush fabric. The circular knitting machine has a needle cylinder fitted with knitting needles, a sinker ring fitted with sinkers, wherein the sinkers have edges adapted to handle a ground yarn...
01/18/1994
5274893Belt for fabricating a non-woven fabric with projections and method for fabricating a non-woven fabric with patterns
Method for manufacturing a non-woven fabric with irregular patterns by using a belt having projections for providing irregular patterns on the non-woven fabric and applying highly pressurized water and hot air onto a fiber assembly placed on and carried b...
01/04/1994
5275023Device on a knitting machine with slider needles and a slider needle for knitting machines
The invention relates to a device on a knitting machine equipped with slider needles for controlling the laying in of a thread (28) into the open needle hooks (5.2). In order to avoid that the thread is not laid into the hooks correctly or that a thread w...
01/04/1994
5275020Circular knitting machine with a needle cylinder and a dial
A circular knitting machine has a needle cylinder (7) and a dial (25) which define a comb distance (x). One of these two needle carriers and a respective cam (9, 27) are displaceably supported in a frame of the circular knitting machine. To prevent unwant...
01/04/1994
5275021Circular knitting machine
A circular knitting machine for manufacturing hosiery comprises a lower needle cylinder (1) having a cam section arrangement (5, 6, 7, 8, 9) and a verticle trick (2) grooved on the needle cylinder (1) near the arrangement (5, 6, 7, 8, 9). The cam section ...
01/04/1994
5275022Process for the fully-fashioned knitting of intarsia jacquard fabric
In the process for the fully-fashioned knitting of intarsia jacquard fabric on a two-bed flat knitting machine, intarsia yarns floating on the back of the fully-fashioned fabric are avoided even in intarsia regions of changing width by effecting a yarn-gu...
01/04/1994
5274883Carding apparatus with drafting and autolever device
A sliver is created by directly condensing the carded web from a carding apparatus and then feeding it to a drafting set from which it is subsequently delivered by way of an autoleveller comprising sliver thickness sensing means and variable draft means....
01/04/1994
5274892Process and apparatus for shrinking textile fabrics
A device for the continuous and tension free treatment of textile sheets is provided. The device comprises an air-permeable endlessly circulating material web bearing surface; an upper stationary and air permeable delimiting wall, the material web bearing...
01/04/1994
5271249Method of knitting tubular knit fabrics
A flat knitting machine provided with at least a pair of needle beds, either or both of the needle beds arranged for movement lengthwisely thereof. Two tubular knit fabrics being coupled each other at both ends, are provided in linear symmetrical relation...
12/21/1993
5269049Process and apparatus for dry forming of a material web from a long-fiber material
The invention relates to a process and an apparatus for the dry forming of a material web from a long-fiber material, wherein fibrous material is blown into a forming space to form a porous material web on a wire passing through the forming space. The dry...
12/14/1993
5269994Nonwoven bonding technique
Thermally bonding nonwoven fabrics having superior tensile stength without decreased absorbency are prepared by supplying a web to a hot calender bonding system and passing the resulting calendered web to a hot-air bonding system....
12/14/1993
5269052Yarn conditioning process
A process for conditioning a yarn package enclosed within a conditioning chamber by introducing low temperature steam at approximately 140° F. for two seconds, thereby setting the twist of the yarn after spinning and winding....
12/14/1993
5267453Loop-type textile fastener fabric and method of producing same
A lightweight warp knitted textile fabric suitable for use as the loop component of a hook-and-loop fastener is formed of a set of ground yarns knitted in a relatively stretchable construction with a first set of loop forming yarns formed in a stitch patt...
12/07/1993
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