Chairs and seats – Convertible – Table
Patent
1984-02-21
1986-08-19
Zugel, Francis K.
Chairs and seats
Convertible
Table
108 99, 108133, A47B 8504
Patent
active
046065750
ABSTRACT:
A lock release for folding tables and shelves in which the locking mechanism to prevent accidental pivoting of the top from a horizontal unfolded position to a generally vertical folded position includes a pivotal link member with guiding edges or surfaces for slidably directing a connector element along the link as the top is folded and unfolded. Most advantageously, the lock is double-acting--that is, two distinct manipulations are required to release the locking mechanism. In a preferred embodiment, the link member has an L-shaped guide slot with an elongated main portion and a relatively short end portion. When the top is horizontal, the connector element is located within the slot's end portion and, to permit the connector element to enter the elongated main portion of the slot, the link member must be shifted about its pivotal axis by the user. In addition, to release the connector element for sliding movement along the slot's main portion, the user must also shift a spring-loaded stop plate laterally out of the path of movement of the connector element. The stop plate is hingedly connected to the link member and includes a handle extension so that by gripping and shifting the extension a user may perform both unlocking actions at the same time. In another embodiment the link member is unslotted, but again, movement of the connector element along the link member is normally obstructed by a pivotal spring-loaded stop plate which performs a releasable locking function.
REFERENCES:
patent: 89045 (1869-04-01), Hilts
patent: 188414 (1877-03-01), Rohde
patent: 199150 (1878-01-01), Flather
patent: 245926 (1881-08-01), Ahrens
patent: 332125 (1885-12-01), Welker
patent: 334239 (1886-01-01), Kline
patent: 339427 (1886-04-01), Kade
patent: 340519 (1886-04-01), Pleukharp
patent: 359322 (1887-03-01), Kaufhold
patent: 359432 (1887-03-01), Colvin
patent: 484723 (1892-10-01), Phillips
patent: 827673 (1906-07-01), Swart
patent: 1937886 (1933-12-01), Grose
patent: 2115860 (1938-05-01), Kroll et al.
patent: 2561703 (1951-07-01), Koenig
patent: 2675859 (1954-04-01), Abler
patent: 2723890 (1955-11-01), Erickson
patent: 2740680 (1956-04-01), Hamilton
patent: 2764460 (1956-09-01), Nelson
patent: 2949154 (1960-08-01), Homme
patent: 2992043 (1961-07-01), Nelson
patent: 3028197 (1962-04-01), Wilson
patent: 3061369 (1962-10-01), Haunost
patent: 3101062 (1963-08-01), Kanzelberger
patent: 3101064 (1963-08-01), Kanzelberger
patent: 3140674 (1964-07-01), Cisler
patent: 3191991 (1965-06-01), Anderson
patent: 3212463 (1965-10-01), Anderson
patent: 3381998 (1968-05-01), Cheshier et al.
patent: 3416468 (1968-12-01), Peterson
Hamilton Industries
Zugel Francis K.
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