JOHN H CARLSON
Engineering in Danvers, MA

4451098, May 29, 1984

Aug 26, 1982

6/411826

Wilbur H. Farley - Beverly MA
Alfred J. Kotek - Ipswich MA
John H. Carlson - Danvers MA

USM Corporation - Farmington CT

F10C 3338

308201

A ball bearing separator assembly comprising an annular ball separator having partitions extending axially from one side thereof, which partitions are abuttable with an annular retention ring, thus forming a circumferential array of ball pockets for bearings. The retention ring may have an axial array of fingers which snap into channels or voids in the partitions to lock them together. The ball separator in another embodiment may have pins which extend from the distal end of the molded separator partitions, which pins may mate with corresponding orifii in the retention ring. The pins may be distorted after mating with their respective orifii to secure the retention ring to the distal ends of the partitions on the ball separator. The annular body portions of the separator and its associated retention ring may be of reduced radial dimension adjacent the ball pockets thereof, to permit flexure of the separator assembly during rotation with a bearing about non-circular harmonic drive-type wave generator mechanisms.

4663813, May 12, 1987

Jan 22, 1986

6/821186

John H. Carlson - Danvers MA

USM Corporation - Farmington CT

B23P 1514

291592

A method of making an elliptoidal internal journal type wave generator for use with a flexspline, the latter having internal spline teeth, an outer diameter (O. D. ) designated two times the radius (R), and a radial deflection (d) for spline meshing at minor axis localities with diametrically opposed spline teeth of at least one rigid circular spline, the method comprising: a. providing a circular wave generator ring with a radially inner wall diameter (I. D. ) equal to twice R plus three times d, and a ring thickness 1. 3 to 1. 4 times the inner wall I. D. ; b. opening the ring by forming only one gap at least eight times d in circumferential dimension; c. radially reducing the ring portion diametrically opposite to the gap to enhance radial flexibility of the ring while still enabling it to maintain its I. D. dimension; d. compressing the ring along an axis perpendicular to a median through the gap and the reduced portion to circumferentially decrease the gap until permanent deformation occurs establishing a minor axis dimension in the ring corresponding to loose meshing of the spline teeth; and e.

4491033, Jan 1, 1985

Jun 23, 1983

6/507015

John H. Carlson - Danvers MA
Carl F. Peterson - Danvers MA

USM Corporation - Farmington CT

F16H 128, F16H 3300

74640

A double eccentric wave generator assembly for a harmonic drive type transmission having a circular spline and a flexible spline coaxially mounted each having matable gear teeth, a deflection means mounted within said flexspline, said deflection means comprising a pair of wave generating discs journalled on eccentric hubs on a sleeve. The discs are non-parallel with one another so as to present an outer periphery which is parallel to the flexspline when it is coned during deflection thereof. A third disc is disposed on the sleeve to provide shape control to the flexspline during rotation thereof.

4816729, Mar 28, 1989

Jun 30, 1986

6/880609

John C. Carlson - Danvers MA

General Electric Company - Cincinnati OH

G05B 1942

318568

This application deals with apparatus for calibrating an automated machining apparatus. The calibration apparatus comprises a tool probe and a system accuracy check gauge rigidly fixed to the workpiece loading mechanism of the machining apparatus. This arrangement allows variations in the locations of the cutting edges of the tools used in the machining apparatus to be taken into account in the machining operation and also allows checking of the dimensional and positional accuracy of the machining apparatus against a precisely known reference.

4776708, Oct 11, 1988

Jul 17, 1987

7/074585

John H. Carlson - Danvers MA

Quincy Technologies, Inc. - New Haven CT

F16C 1950, F16H 2506

384447

A wave generator for a strain wave gearing device is provided wherein variant size balls are retained by a ball separator located between inner and outer ball races. A multiple number of balls on each diametrically opposed sides have the largest diameter with the balls decreasing in size away from these balls.

4524639, Jun 25, 1985

Jun 23, 1983

6/507014

John H. Carlson - Danvers MA

USM Corporation - Farmington CT

F16H 3300

74640

A harmonic drive motion transmitting mechanism having a housing encircling a circular spline within which is journalled a flexspline. The flexspline has an annular array of gear teeth thereon, which flexspline has an inner bore having a diameter defined as D. The circular spline also has an annular array of gear teeth mateable with those of the flexspline. A wave generator is mounted within the flexspline. The flexspline has a lip which extends longitudinally beyond the distal edge of its annular array of gear teeth by 10% to 40%D. The lip is of radially thickening dimensions from immediately adjacent the outer edge of the annular array of gear teeth thereon, and from a thickness of about 1%D up to a thickness of about 3%D at the distal edge of said flexspline, to minimize the skewing of the ellipsoidal deflection wave of the flexspline.

4817457, Apr 4, 1989

Aug 18, 1986

6/897695

John H. Carlson - Danvers MA

Quincy Technologies, Inc. - New Haven CT

F16H 3300, F16H 3500

74640

A strain wave gearing device comprising a ring gear having internal axially extending teeth and a strain gear produced from a strain gear blank having constant thickness to the cylindrical and diaphragm portions. The cylindrical portion has external axially extending teeth extending around an annular portion adjacent the open end of the strain gear for engaging with the internal teeth of the ring gear (the number of external teeth on the strain gear being different than the number of internal teeth on the ring gear) and a wave generator is located within and matingly engages with the strain gear. The wave generator adapted to be rotatively driven relative to the strain gear whereby relative rotational movement will occur between the strain and ring gears.

4375602, Mar 1, 1983

Sep 8, 1980

6/185345

John H. Carlson - Danvers MA

USM Corporation - Farmington CT

H02K 706

310 83

A digital stepping motor having a rigid tubular rotor arranged within a stator, in a housing, the stator having an arrangement of spline teeth adjacent one end thereof on a portion of the housing. The rotor has an array of spline teeth disposed at one end thereof, and a deflectable diaphragm at the other end thereof. The deflectable diaphragm is fixedly attached to an output shaft. The tubular rotor has an axis of rotation which is slightly skewed with respect to the axis of rotation of the output shaft during energization of the motor when the rotor is attracted to the stator. The stator comprises a plurality of equi-angularly spaced coils, the sequential energization of which causes sequential circumferential engagement of corresponding external and internal spline teeth between the rotor and the spline teeth on the end cap, creating an orbiting motion within the rotor, and a subsequent rotation of the output shaft.