Abstract: A system for differential recording connectable to an electrical lead with at least two electrodes, including: the lead having a distal end; at least one amplifier electrically connectable to the at least two electrodes, wherein the at least one amplifier subtracts a signal recorded by one of the at least two electrodes, from a signal recorded by the other one of the at least two electrodes to generate a differential signal; a memory configured for storing said differential signal and reference indications of electrical signals associated with neural tissue; a processing circuitry for detection of an anatomical position, wherein the processing circuitry calculates an anatomical position of the electrical lead based on processing of the differential signal and the reference indications of electrical signals associated with the neural tissue.

Abstract: Sling sliders have a body defining an elongated sling strap passage configured to receive an elongated sling strap, the elongated sling strap passage defined at least in part by an elongated bar having opposed ends, the elongated bar defining an elongated cord passage extending between the opposed ends of the elongated bar, a cord received in the elongated cord passage, and the cord having a received portion within the elongated cord passage and a handle portion extending outside the elongated cord passage such that the handle portion operates to exert a motive force on the body. The sling slider may be a triglide. The body may have three parallel bars, and the elongated bar defining the elongated cord passage may be positioned between a second bar and a third bar. The body may define a pair of elongated sling strap passages on opposite sides of the elongated bar.

Abstract: Sling sliders have a body defining an elongated sling strap passage configured to receive an elongated sling strap, the elongated sling strap passage defined at least in part by an elongated bar having opposed ends, the elongated bar defining an elongated cord passage extending between the opposed ends of the elongated bar, a cord received in the elongated cord passage, and the cord having a received portion within the elongated cord passage and a handle portion extending outside the elongated cord passage such that the handle portion operates to exert a motive force on the body. The sling slider may be a triglide. The body may have three parallel bars, and the elongated bar defining the elongated cord passage may be positioned between a second bar and a third bar. The body may define a pair of elongated sling strap passages on opposite sides of the elongated bar.

Abstract: Sling sliders have a body defining an elongated sling strap passage configured to receive an elongated sling strap, the elongated sling strap passage defined at least in part by an elongated bar having opposed ends, the elongated bar defining an elongated cord passage extending between the opposed ends of the elongated bar, a cord received in the elongated cord passage, and the cord having a received portion within the elongated cord passage and a handle portion extending outside the elongated cord passage such that the handle portion operates to exert a motive force on the body. The sling slider may be a triglide. The body may have three parallel bars, and the elongated bar defining the elongated cord passage may be positioned between a second bar and a third bar. The body may define a pair of elongated sling strap passages on opposite sides of the elongated bar.

Abstract: Sling sliders have a body defining an elongated sling strap passage configured to receive an elongated sling strap, the elongated sling strap passage defined at least in part by an elongated bar having opposed ends, the elongated bar defining an elongated cord passage extending between the opposed ends of the elongated bar, a cord received in the elongated cord passage, and the cord having a received portion within the elongated cord passage and a handle portion extending outside the elongated cord passage such that the handle portion operates to exert a motive force on the body. The sling slider may be a triglide. The body may have three parallel bars, and the elongated bar defining the elongated cord passage may be positioned between a second bar and a third bar. The body may define a pair of elongated sling strap passages on opposite sides of the elongated bar.

Abstract: Sling sliders have a body defining an elongated sling strap passage configured to receive an elongated sling strap, the elongated sling strap passage defined at least in part by an elongated bar having opposed ends, the elongated bar defining an elongated cord passage extending between the opposed ends of the elongated bar, a cord received in the elongated cord passage, and the cord having a received portion within the elongated cord passage and a handle portion extending outside the elongated cord passage such that the handle portion operates to exert a motive force on the body. The sling slider may be a triglide. The body may have three parallel bars, and the elongated bar defining the elongated cord passage may be positioned between a second bar and a third bar. The body may define a pair of elongated sling strap passages on opposite sides of the elongated bar.

Abstract: A backplate for a rifle may include a buffer tube engagement ring and an engagement tab operably coupled to the buffer tube engagement ring. The engagement tab may include a receiver engagement face and an exposed face that is opposite the receiver engagement face. The receiver engagement face may include a backplate protrusion extending away from a surface of the receiver engagement face, and a spring assisted guide spaced apart from the backplate protrusion. The spring assisted guide may include a cylindrically shaped cavity configured to receive and retain a distal end of a detent spring of the rifle.

Abstract: A rifle stock with pivoting detachable sling support element has a body configured for connection to a rifle, the body defining a pocket, the pocket being configured to removably receive a sling support element, the pocket defining a pivot axis, a sling support element removably received in the pocket, and the sling support element being pivotally received in the pocket to pivot about the pivot axis. The stock may define a primary stock axis associated with a longitudinal axis of the rifle, and the pivot axis may be parallel to the primary stock axis. The stock may define a bore having a bore axis and configured to receive a rear cylindrical protrusion of the rifle, and the pivot axis may be parallel to the bore axis. The sling support may include a nose portion having a plurality of retractable latch elements. The retractable latch elements may be balls.

Abstract: Sling sliders have a body defining an elongated sling strap passage configured to receive an elongated sling strap, the elongated sling strap passage defined at least in part by an elongated bar having opposed ends, the elongated bar defining an elongated cord passage extending between the opposed ends of the elongated bar, a cord received in the elongated cord passage, and the cord having a received portion within the elongated cord passage and a handle portion extending outside the elongated cord passage such that the handle portion operates to exert a motive force on the body. The sling slider may be a triglide. The body may have three parallel bars, and the elongated bar defining the elongated cord passage may be positioned between a second bar and a third bar. The body may define a pair of elongated sling strap passages on opposite sides of the elongated bar.

Abstract: A backplate for a rifle may include a buffer tube engagement ring and an engagement tab operably coupled to the buffer tube engagement ring. The engagement tab may include a receiver engagement face and an exposed face that is opposite the receiver engagement face. The receiver engagement face may include a backplate protrusion extending away from a surface of the receiver engagement face, and a spring assisted guide spaced apart from the backplate protrusion. The spring assisted guide may include a cylindrically shaped cavity configured to receive and retain a distal end of a detent spring of the rifle.

Abstract: A sling connector is provided for a weapon. The sling connector comprises a rectangular body having opposed and parallel first and second bars. The body also has a third central bar between and parallel to the first and second bars. The central bar defines an elongated passage with a cord loop passing through the passage.

Abstract: A rifle stock is provided for a firearm. The rifle stock comprises a body with a bore having a forward opening that receives a rifle buffer tube. The body of the rifle stock defines a pocket at a level below the bore. The pocket of the body has a forward opening, and the stock comprises a sling support element. The sling support element has a mating element pivotally received in the pocket.

Abstract: An apparatus for aiding a user to walk. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

Abstract: An apparatus for aiding a user to walk in which the apparatus is selectively separable to a plurality of discrete walking aid devices. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).

Abstract: In scanning devices used for opto-mechanical processing of a substrate covered with a photo-sensitive material, it is highly desirable to be able to achieve accurate control of the carriage utilized for scanning the substrate. To accomplish this, the carriage is moved along a rectilinear guide by use of a linear motor, preferably under computer control. The linear motor includes a winding which is composed of a number of isolated conductors attached to the rectilinear guide orthogonally to the longitudinal axis of the guide. The winding is connected to the control computer through a controllable current source. The linear motor also includes a solid-state commutator coupled to magnetically propel the carriage in accordance with current supplied to the winding from the controllable current source based on instructions from the control computer.