Trailer tongue lock
Patent D506121 Issued on June 14, 2005. Estimated Expiration Date: 
June 14, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 14, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesTrailer hitch lock Trailer hitch D297706 Surge brake apparatus for gooseneck trailers Kingpin security device Trailer hitch lock D350054 Anti-theft device for trailer D402602 D414675 InventorsAssigneeApplicationNo. 29204479 filed on 04/29/2004US Classes:D08/331, Lock, latch or bolt (17)D12/162Draw element, e.g., trailer hitchExaminersPrimary: Deshmukh, PrabhakarAttorney, Agent or FirmClaimsThe ornamental design for a trailer tongue lock, as shown. DescriptionFIG. 1 is a perspective view of a trailer tongue lock embodying our new design. FIG. 2 is a side view of the trailer tongue lock of FIG. 1 as seen from the left side. FIG. 3 is a side view of the trailer tongue lock of FIG. 1 as seen from the right side. FIG. 4 is a rear view of the trailer tongue lock of FIG. 1. FIG. 5 is a front view of the trailer tongue lock of FIG. 1. FIG. 6 is a top view of the trailer tongue lock of FIG. 1; and, FIG. 7 is a bottom view of the trailer tongue lock of FIG. 1. * * * * * Field of SearchLOCKING OR CLOSING DEVICE (17)Lock, latch or bolt (17) Element or attachment (21) Keeper or receiver (22) Hasp staple Draw element, e.g., trailer hitch PARTS, ACCESSORIES AND ATTACHMENTS FOR VEHICLES NOT ELSEWHERE SPECIFIED PORTABLE Parts, accessories, attachments and adjuncts Housings Door Swinging door Locking latch bolt, biased Locking latch bolts, biased Accessories PARTS, ATTACHMENTS, ACCESSORIES AND ADJUNCTS Slotted bar LATCH SPINDLES LATCH-SPINDLE CATCHES |
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