Joints and connections – Manually releaseable latch type – Having operating mechanism
Reexamination Certificate
2001-02-28
2001-12-18
Browne, Lynne H. (Department: 3629)
Joints and connections
Manually releaseable latch type
Having operating mechanism
C403S325000, C403S316000
Reexamination Certificate
active
06331091
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates generally to wheel axles, and more particularly to such an axle capable of being disassembled and reassembled by snapping two halves of the device apart or together respectively.
2. Description of Relate Art
The following art defines the present state of this field:
Poddig et al., U.S. Pat. No. 3,038,567 describes a telescopic antenna movable between a collapsed and extended position, in combination, a tubular outer section formed in its inner surface with a recess; an inner antenna section arranged in the collapsed position of the antenna entirely in said outer section and slidable in longitudinal direction thereof to an extended position; a head also arranged in the collapsed position of the antenna in said outer section and being connected to said inner section for movement therewith, said head being formed with a stepped longitudinal bore having an inner small diameter portion and at its outer end a large diameter portion, and said head being formed with a transverse bore communicating with said small diameter portion, and said head being formed with a transverse bore communicating with said small diameter bore portion for longitudinal movement relative to said head, said holding member being spring biased into holding position; a locking member arranged in said transverse bore portion and cooperating with said holding member so as to be urged outwardly thereby, when said holding member is in said holding position thereof, into a locking position wherein said locking member projects into said recess of said outer section; and key means having a stem portion and a bit portion projecting radially from said stem portion spaced from the free end of the end of the latter, said key means being movable between and active position in which said stem portion thereof is located in said small diameter bore portion and engages said holding member for moving the same longitudinally out of said holding position, thereby permitting said locking member to leave said locking position and in which said bit portion is out of alignment with said keyhole-shaped opening and engages said closure plate to hold said key means in said inner section out of said outer section, and an inactive position in which said bit is aligned with said keyhole-shaped opening so that said key means may be withdrawn from said longitudinal bore.
Allen et al, U.S. Pat. No. 3,277,767 describes a quick release pin which consists of a main body, or head, made of quality steel. The shape is optional and preferably generally cylindrical and has a stepped cylindrical passage extending longitudinally throughout its length. The fore end of the passage is a counterbore of substantial depth and the aft end of the hollow shank fits closely in the counterbore. The shank is permanently secured or bounded in place by the use of meltable metal; that is, may be welded or brazed, including the type of brazing known as “sweating.” Instead of forming the head with an integral lateral handle by machining or forging, or welding a handle to it, the hollow head is cross bored to form a lateral passage and extends into and preferably through the longitudinal passage. The handle portion which is located within the longitudinal passage is then swaged to modify its shape and prevent it from being removed through the lateral passage. Thus it effectively becomes integral with the head without the necessity of welding or similar operations. In the presently preferred form it is swaged sufficiently to make it conform at least partially to the cylindrical shape of the longitudinal passage, thus preventing rotation as well as axial movement. A central opening is formed in the handle portion and a spring loaded spindle extends through it and through the guideway in the hollow shank to operate conventional lock balls. In a modification of the invention, the intermediate and aft portions of the longitudinal passage in the head are larger than the fore portion. The shank is formed with a cylindrical abutment at its aft end and the shank is inserted forwardly through the head, being pressed tightly into the forward portion of the longitudinal passage until the abutment seats on the shoulder formed at the juncture of the passage portions of different diameters. The fit may be made so tight that nothing additional is needed to make the connection permanent. The lateral passage is formed immediately behind the abutment, and a handle is inserted and swage locked in substantially the same way as in the first embodiment. The shank cannot move rearwardly. The abutment may have a trough shaped aft face partially surrounding the handle, which very effectively prevents any rotation of the shank.
Desmarchais, U.S. Pat. No. 3,507,528 describes a locking mechanism using a pair of locking longitudinal members with a locking device formed on the adjacent inner parts of the members for coupling them together. One of the members is annular with an element extending through it to position the coupling device in locked arrangement and is moveable to decouple the elements.
Liedholm, U.S. Pat. No. 3,884,589 describes a locking joint for concrete piles. Facing end surfaces are joined by outwardly projecting pins or openings communicating with pin receiving spaces. The receiving spaces and each pin has a transverse hole to receive a wedge device inserted in the hole and through a bore projecting through the side of the pile sections into which the pin is inserted. This holds the pile sections in firm abutting relationship.
Metz, U.S. Pat. No. 3,945,744 describes an extendable and collapsible telescoping strut construction comprising inner and outer tubular members adapted to be slidably received in one another. The inner member is provided with rolled-in portions constituting annular locking grooves, respectively. The outer member has radially extending slots to receive locking dogs which are advanceable toward the inner member in predetermined, fixed positions with respect to the outer member. The latter further carries a springbiased, slidable collar member which retains the locking dogs in positions of engagement with any one of the annular grooves. Positive, cooperable locking means on the collar member and on the outer tubular member are provided for retaining these two parts in a predetermined, fixed position against accidental bumping or jarring, whereby the locking dogs are fly held in their advanced, locking positions. The arrangement is such that the spring automatically advances the collar member to its locked position with respect to the outer tubular member as soon as the collar member is released.
Hollmann, U.S. Pat. No. 4,453,449 describes a hold down apparatus having a sleeve with a plurality of fingers, the reactive length of which is varied in order to provide any predetermined engaging and release force to detents which engage a groove in a shaft that is attached to a missile to form a passive hold down apparatus which is reusable.
Schott, U.S. Pat. No. 4,616,952 describes a shaft coupling joining together a coupling sleeve and a power takeoff shaft, wherein a plurality of locking bodies guided in radial openings in the coupling sleeve engage within an annular groove in the power takeoff shaft to axially retain the members coupled together. An axially movable lock ring holds the locking bodies in engagement within the annular groove and when in the released position a gripping sleeve axially fixed with the lock ring, but rotatable relative thereto extending about the coupling sleeve, is engaged within the radial openings of the coupling sleeve to hold the coupling in the released position. The gripping sleeve is formed with an annular part extending axially inwardly of the gripping sleeve, a radially inwardly directed hooked projection provided on the annular part and a plurality of longitudinally extending slots uniformly circumferentially distributed on the annular part dividing it into a plurality of individual radially inwardly extending locking brackets having hooked projectio
Browne Lynne H.
Cottingham John R.
Gene Scott-Patent Law & Venture Group
LandOfFree
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