Patents by Inventor Yefim Spektor

Yefim Spektor has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10874136
    Abstract: A device for holding a cylindrical element includes a base and a clamp arm coupled with the base. The clamp arm is configured to pivot relative to the base between an open position and a closed position for clamping a cylindrical element against the base, and the clamp arm is resiliently biased toward the closed position. A support feature coupled with the base is configured to support an elongate element while the clamp arm clamps the cylindrical element. The device further includes a stem extending away from the base.
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: December 29, 2020
    Inventor: Yefim Spektor
  • Publication number: 20200015517
    Abstract: A device for holding a cylindrical element includes a base and a clamp arm coupled with the base. The clamp arm is configured to pivot relative to the base between an open position and a closed position for clamping a cylindrical element against the base, and the clamp arm is resiliently biased toward the closed position. A support feature coupled with the base is configured to support an elongate element while the clamp arm clamps the cylindrical element. The device further includes a stem extending away from the base.
    Type: Application
    Filed: July 16, 2018
    Publication date: January 16, 2020
    Inventor: Yefim Spektor
  • Patent number: 10518578
    Abstract: A dual-stage caster is disclosed. The caster includes a horn assembly and an arm assembly pivotally coupled to the horn assembly. The caster further includes a wheel rotatably mounted to the arm assembly and a mounting plate mounted to the horn assembly and configured be mounted to a transport vehicle. When the wheel is moved along a support surface, the arm assembly is in a neutral position and the wheel is in the up position. When the wheel moves into a depression in the support surface, the wheel stage spring moves the wheel from the up position to the down position and the arm assembly remains in the neutral position. When the wheel moves over a raised portion in the support surface, the arm assembly pivots relative to the horn assembly so as to compress the main stage spring. The caster may be a swivel caster or a rigid caster.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: December 31, 2019
    Assignee: Hamilton Caster & Manufacturing Company
    Inventors: Yefim Spektor, Patrick L. McCartney, Lakshadeep Sandeep Goregaonkar, Julie Ann Johnson, Jevon Robert Lambright
  • Patent number: 9757980
    Abstract: A swivel caster includes a swivel assembly having a swivel plate configured to be mounted to a vehicle and defining a swivel axis. A horn depends downwardly from the swivel assembly and a wheel is wheel coupled to the horn with a wheel axle. A slide mechanism couples the horn to the swivel assembly and enables the wheel to slide in a direction generally perpendicular to the swivel axis between first and second trailing positions. The slide mechanism swivels with the horn, the wheel, and the swivel plate about the swivel axis. A swivel limiter is operatively associated with the swivel assembly and limits a swiveling range of the wheel about the swivel axis so as to activate the slide mechanism to reposition the wheel from the first trailing position to the second trailing position when a direction of travel of the vehicle changes.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: September 12, 2017
    Assignee: Hamilton Caster & Manufacturing Company
    Inventors: Lester Jones, Patrick L. McCartney, Yefim Spektor, John Yater
  • Patent number: 9527347
    Abstract: A caster wheel braking system for braking rotation of a caster wheel includes a caster having a caster plate, a horn base coupled with the caster plate and rotatable about a vertical axis, a pair of legs extending downwardly from the horn base, and at least one caster wheel coupled with the pair of legs and rotatable about a horizontal axis defined by a wheel axle. A mounting plate is spaced from the caster by a spacer. A movable plunger is disposed between the caster plate and the mounting plate and is horizontally movable through a slot provided in the spacer. A brake shoe is vertically movable by the movable plunger between a non-braking position in which the at least one caster wheel is permitted to rotate and a braking position in which the brake shoe exerts a braking force on the at least one caster wheel to at least partially hinder rotation of the at least one caster wheel.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: December 27, 2016
    Assignee: Hamilton Caster & Manufacturing Company
    Inventor: Yefim Spektor
  • Publication number: 20160009132
    Abstract: A caster wheel braking system for braking rotation of a caster wheel includes a caster having a caster plate, a horn base coupled with the caster plate and rotatable about a vertical axis, a pair of legs extending downwardly from the horn base, and at least one caster wheel coupled with the pair of legs and rotatable about a horizontal axis defined by a wheel axle. A mounting plate is spaced from the caster by a spacer. A movable plunger is disposed between the caster plate and the mounting plate and is horizontally movable through a slot provided in the spacer. A brake shoe is vertically movable by the movable plunger between a non-braking position in which the at least one caster wheel is permitted to rotate and a braking position in which the brake shoe exerts a braking force on the at least one caster wheel to at least partially hinder rotation of the at least one caster wheel.
    Type: Application
    Filed: September 24, 2015
    Publication date: January 14, 2016
    Inventor: Yefim Spektor
  • Patent number: 9168785
    Abstract: A caster wheel braking system for braking rotation of a caster wheel includes a caster having a caster plate, a horn base coupled with the caster plate and rotatable about a vertical axis, a pair of legs extending downwardly from the horn base, and at least one caster wheel coupled with the pair of legs and rotatable about a horizontal axis defined by a wheel axle. A mounting plate is spaced from the caster by a spacer. A movable plunger is disposed between the caster plate and the mounting plate and is horizontally movable through a slot provided in the spacer. A brake shoe is vertically movable by the movable plunger between a non-braking position in which the at least one caster wheel is permitted to rotate and a braking position in which the brake shoe exerts a braking force on the at least one caster wheel to at least partially hinder rotation of the at least one caster wheel.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: October 27, 2015
    Assignee: Hamilton Caster & Manufacturing Company
    Inventor: Yefim Spektor
  • Publication number: 20150210114
    Abstract: A caster wheel braking system for braking rotation of a caster wheel includes a caster having a caster plate, a horn base coupled with the caster plate and rotatable about a vertical axis, a pair of legs extending downwardly from the horn base, and at least one caster wheel coupled with the pair of legs and rotatable about a horizontal axis defined by a wheel axle. A mounting plate is spaced from the caster by a spacer. A movable plunger is disposed between the caster plate and the mounting plate and is horizontally movable through a slot provided in the spacer. A brake shoe is vertically movable by the movable plunger between a non-braking position in which the at least one caster wheel is permitted to rotate and a braking position in which the brake shoe exerts a braking force on the at least one caster wheel to at least partially hinder rotation of the at least one caster wheel.
    Type: Application
    Filed: January 24, 2014
    Publication date: July 30, 2015
    Applicant: HAMILTON CASTER & MANUFACTURING COMPANY
    Inventor: Yefim Spektor
  • Patent number: 9051965
    Abstract: A caster includes a mounting plate, a horn having a horn base and at least one leg, a wheel axle coupled to the at least one leg and defining a rolling axis, a caster wheel coupled to the wheel axle and rotatable about the rolling axis, and an eccentric bearing assembly coupling the horn with the mounting plate. In one embodiment, the bearing assembly includes first, second, and third rings of rolling elements, defining first, second, and third horizontal bearing planes, respectively. The second and third rings of rolling elements are positioned eccentrically within the first ring of rolling elements. In another embodiment, the first bearing plane extends between the second and third bearing planes. A transport vehicle includes a vehicle body and at least one swivel caster having an eccentric bearing assembly.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: June 9, 2015
    Assignee: Hamilton Caster & Manufacturing Company
    Inventor: Yefim Spektor
  • Patent number: D901070
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: November 3, 2020
    Inventor: Yefim Spektor