Latching mechanism

• US 5,016,926 A
• Filed: 03/23/1990
• Issued: 05/21/1991
• Est. Priority Date: 05/20/1988
• Status: Expired due to Fees

• Current Assignee: Doskocil Manufacturing Company Incorporated (Petmate Holdings Co.)
• Original Assignee: Doskocil Manufacturing Company Incorporated (Petmate Holdings Co.)
• Inventors: Smith, E. W., Sharp, Douglas J.
• Primary Examiner(s): Moore, Richard E.
• Application Number:
  US07/497,999
• Time in Patent Office: 424 Days
• Field of Search: 292/32, 292/42, 292/153, 292/163, 292/175, 292/306, 292/DIG. 63
• US Class Current: 292/42
• CPC Class Codes: A01K 1/0236 Transport boxes, bags, cages, baskets, harnesses for animals; Fittings therefor for poultry A01K31/002; for pigeons A01K31/07
• CPC Class Codes: A01K 1/0245 Boxes or cages
• CPC Class Codes: A01K 1/03 Housing for domestic or laboratory animals
• CPC Class Codes: A01K 31/02 Door appliances; Automatic door-openers
• CPC Class Codes: E05C 1/04 with operating handle or equivalent member rigid with the bolt
• CPC Class Codes: Y10S 292/63 Finger or hand grip
• CPC Class Codes: Y10T 292/0846 Rigid

Abstract

A latching mechanism having utility in securing a pivotable member in at least one position with respect to a stationary structure. The housing includes a base that is adapted to be mounted adjacent the pivotable member (e.g., a cage door), with the base lying in a plane which is generally parallel to the plane established by the cage door. A pair of spaced flanges is affixed to the base, with each of the flanges extending away from the door and lying in planes which are generally perpendicular to the base. Each of the flanges has two openings which are adapted to slidably receive first and second elongated appendages, with both appendages being slidably held with respect to the housing, and with each appendage having an outer region extending outwardly away from the housing. The two latching appendages are adapted to move in different directions, with the appendage outer regions being configured to engage a portion of the stationary structure (i.e., the cage enclosure) so as to hold the cage door in a closed position. The latching mechanism includes a control device for manipulating the appendages so as to slidably move the latching appendages inwardly (with respect to the housing). The control device includes a pair of protuberances, each having a length which is sufficient as to be easily engaged by a single digit of a user'"'"'s hand. A pair of coil springs is provided for continuously urging the appendages in different directions away from the housing. A pair of cap-like members are ideally affixed to the exterior surface of each of the protuberances so as to facilitate gripping the protuberances with at least one digit of a person'"'"'s hand.

Claims

1. A latching mechanism having utility in holding a door-like member in a fixed position with respect to an opening in an enclosure, comprising:

a housing adapted to be affixed to said door-like member, said housing having first and second flanges located adjacent opposite sides of said housing, each flange having at least two openings disposed therein, said at least two openings sized as to slidably receive a pair of rods;

a first and second elongate rod slidably mounted with respect to said housing in each of said at least two openings, each rod having an inner segment and an outer segment as considered with respect to said housing, the respective outer segment of each of said pair of rods extending outwardly from said housing at opposite ends of said housing;

a stub affixed to each of said rods at a point within said inner segment wherein each stub shall protrude from said housing between said first and second flange, each stub having a length which permits manipulation by a person'"'"'s digit; and

biasing means mounted within said housing and adapted to urge said first and second elongate rod outward from said housing.

2. The latching mechanism as claimed in claim 1 and further including a pair of cap-like members, each having an exterior surface that is adapted to foster gripping, and each being adapted to circumferentially cover at least most of the exposed exterior of an associated stub, whereby the gripping surface of a cap-like memeber facilitates manipulation by at least one digit of a person'"'"'s hand.

3. The latching mechanism as claimed in claim 1 wherein the longitudinal distance between the first and second stubs is about two inches when the associated rods are fully extended so as to be engaged with the enclosure, and the longitudinal distance between the first and second stubs being decreased to about one inch when the rods are in their disengaged position, and the transverse distance between the two stubs being about three quarters of an inch, whereby the step of simultaneously grasping both stubs and pinching them together is relatively easy when using at least two digits of an adult'"'"'s or child'"'"'s hand.

4. The latching mechanism as claimed in claim 1 and further including a cover adapted to juxtaposed over said housing and attached to said housing so as to enclose said biasing means, and the ends of said cover being adapted to assist in guiding the anticipated sliding movement of the rods in a longitudinal direction, said cover having a pair of elongate slots which are sized to slidably receive respective ones of the stubs.

5. The latching mechanism as claimed in claim 4 wherein each stub has a length such that it will protrude about one-half inch beyond the face of the cover, whereby engaging a given stub with a digit of a person'"'"'s hand is facilitated.

6. The latching mechanism as claimed in claim 4 and further including a cap-like member adapted to be adhesively affixed to the outer end of each of the stubs, each cap-like member having a width which is greater than the width of an elongated slot of the cover such that the cover is captured between said cap-like members and the housing when the cap-like members are affixed to the stubs.

7. The latching mechanism as claimed in claim 4 wherein said elongate slot of the cover is about one inch long, and the inward longitudinal movement of an associated stub and its associated outer segment is limited to the length of an associated elongate slot in the cover.

8. The latching mechanism as claimed in claim 1 and further having a first and second restraining members for assisting in guiding axial movement of the rods, each restraining member being located outside of the housing and having an opening sized to slidably receive an associated rod.

9. The latching mechanism as claimed in claim 1 wherein the central axes of the rod inner segments are about three-quarters of an inch apart, such that the outer segment of one rod will not interfere with the inner segment of the other rod when both rods are simultaneously moved inward toward the housing.

10. The latching mechanism as claimed in claim 1 and further including means for restricting the amount of axial movement that said rods are permitted to make with respect to the housing.

11. The latching mechanism as claimed in claim 1 wherein said biasing means comprises a pair of coil springs circumferentially and slidably mounted about respective ones of the rod inner segments as to be captured within the housing.