Abstract: A blade for a reciprocating saw having a cutting edge comprising a plurality of longitudinally aligned teeth, the improvement comprising the teeth having a negative rake angle near the leading end of the blade for reducing needed force for cutting at the beginning of a stroke, and a positive rake angle near the trailing end of the blade for increasing the force necessary for cutting to decelerate the saw during or at the of the stroke, whereby cutting actions are related to expected blade speed at any given point on the saw and relatively constant muscular effort is required over the length of a stroke.

Abstract: A bow saw useful for camping, backpacking, tree pruning, wood cutting, and like outdoor usages particularly, which comprises a rigid tubing having opposed differentially dimensioned distal and proximal ends defining opposed saw blade receiving slots in a common plane, a saw blade having differentially proportioned distal and proximal end portions singularly orienting the blade relative to the bow in the bow slot received condition of the blade, and blade retaining apparatus carried by the blade within the bow tubing in blade distal and proximal end portion defining relation.

Abstract: A simulated vehicle radar transceiver is molded as a single, unitary piece of plastic material in the form of an elongated body having a large end which simulates the visual appearance of a vehicle radar antenna, a smaller end, and a horizontal projection which is adapted to be clamped between the top edge of an automobile window and the top of the respective window frame.

Abstract: A tent comprises a trapezoidal floor, two congruent trapezoidal side walls contiguous at the ridge line, a front wall in the shape of an equilateral triangle and including a door opening, and a rear wall in the shape of an obtuse isosceles triangle; wherein the triangular perimeter at every transverse cross-section is constant. The tent is supported principally by a tension line through the ridge line of the tent which is secured to a point outside the front of the tent and higher than the peak of the front, and is also secured to a second point outside the rear of the tent at the ground, with the floor and side walls of the tent being held in membrane tension by ground stakes at the lower apex points of the front and rear walls. The front door panel is held closed by an elastic member stretched in a straight line across the threshold and attached along its length to the shirred lower edge of the door panel.

Abstract: A male screw base for a lampholder fitting has a cylindrical insulative body having a helical groove in its exterior surface, in which a helical spring is loosely disposed. Both ends of the helical spring are bent inwards and protrude through a slot at either end of the groove to extend into a hollow interior of the body. The inside diameter of the spring is spaced from the bottom surface of the groove a distance equal to the thread depth of the female threads of an Edison-based lampholder. The bent ends of the spring are normally in contact with the near ends of their respective slots, whereby excessive installation torque will wind up the spring, reducing its diameter a sufficient distance to become disengaged from the lampholder thread grooves. A conductor is connected to one of the spring ends, and a second conductor is provided as a center contact coaxially extending from one end of the cylindrical body. The end of the body opposite the center connector is adapted for attachment to a lampholder fitting.

Abstract: A fluorescent lampholder fitting has a preheat type circular fluorescent lamp with its ends in proximity and having a first end provided with a starting filament with a first and second filament terminal wire, and a second end provided with a second starting filament with a first and second filament terminal wire. A male screw base electrical connector extends axially along the lamp circle centerline from a housing which supports the lamp in a plane normal to the axis of the screw base. The screw base is provided with three electrical input connections which are adapted to be used in a three-way lampholder of a portable lamp or light fixture. A lamp starter is connected between the first lamp filament and the second lamp filament.

Abstract: A lampholder-socket is attached to a housing having a smaller cross section than a circline lamp. The housing is preferably block-shaped, having four edges parallel to the axis of the circline lamp when installed. The diagonal distance between the edges is almost as large as the diameter of the circline lamp. The lampholder-socket extends partially inside the housing and partially outside the housing. Its terminals are adapted at one end to engage the circline lamp pins outside the housing when the circline lamp surrounds the housing and are adapted at the other end to receive connecting wires of components inside the housing, preferably with a poke home connection. A support, preferably a pair of stationary fingers extending from the housing at points spaced from each other and from the lampholder-socket, hold the circline lamp in place together with the lampholder-socket when the pins of the circline lamp engage the terminals.

Abstract: A flashlight has one or more batteries disposed in a first tubular housing section, a switch disposed in a second tubular housing section, and a lamp assembly with a light bulb disposed in a third tubular housing section. The first and second housing sections are joined by a threaded connection. The second and third housing sections are joined by a threaded connection, either directly or indirectly through a fourth tubular housing section in which one or more batteries are disposed. The switch has an elongated switch post supported to extend between two holes on opposite sides of the second housing section and to move axially toward one hole or the other without protruding substantially beyond the surface of the housing. An electrical circuit for the batteries and the bulb is opened and closed responsive to axial movement of the switch post. Diaphragms adjacent to the ends of the switch post seal the two holes.

Abstract: A plurality of passages extend through an insulated body from one end to the other. Each passage has first and second sections separated by a protrusion forming a restriction in the passage. A conductive terminal is disposed in each passage. The terminal has a first channel with a U-shaped cross-section adapted to receive a circline lamp plug pin in the first section of the passage, a second channel with a U-shaped cross-section adapted to make a poke home connection with a wire in the second section of the passage, and a strip connecting the first and second channels across the restriction of the protrusion. The protrusions retain the terminals in their respective passages by limiting longitudinal movement of the sides of the channels. To make a poke home connection, the center of the second channel has a flap extending across the second section of the passage inclined in the direction of the first channel so a wire inserted in the second channel is wedged between the flap and the surface of the passage.

Abstract: An automotive service ramp comprising a unitary body member including a ramp portion with integral side stiffening, tire retaining rails, a contoured rest portion to receive the tire of an automobile, and an extension beyond the rest portion which constitutes a leg portion.The ramp portion has transverse corrugations, is contoured transversely to match normal tire cross sections and has depending stiffening sides. A slight edge rail extends above the surface of the ramp.A handle is pivotally secured to the body in a position whereby it may be grasped to carry the ramp with the ramp portion hanging downward. The handle is pivoted to overlie the rest and leg portion when not in use and to be out of the way. An integral retainer portion of the body member holds the handle at a fixed position when not in use.

Abstract: A telescoping jack stand made of stamped metal parts with a pair of angularly extending legs which are pivotally mounted with respect to each other. The legs define an aperture between the legs with inwardly extending integral teeth. A central column member includes matching teeth and corresponding in shape and dimension with the aperture between the two legs. The central column includes recesses corresponding to the integral teeth of the legs. The legs are pivoted with respect to each other so that upon engagement of the teeth with the recesses in the column, additional load tends to pivot the teeth into greater engagement with the column and provide improved stability.

Abstract: A slide switch designed to be attached to the barrel of the flashlight by a pair of screws which serve the further function of interconnecting the switch to the electrical circuit of the flashlight. The switch body is of insulating material. It includes a pair of side ears protecting the switch operator and a pair of screw holes through the body. Two leaf springs constituting the contact elements include reentrant tabs extending through the screw openings of the body whereby the reentrant tabs engage both the shank and the underside of the head of the mounting screws.