Abstract: An adjustable height table having a top that can be vertically adjusted to various heights by a pair of telescoping legs and a counterbalance weight mechanism which includes a weight box and weights that can be easily added or removed by the user depending on the weight carried by the table top. A locking mechanism including a spring-urged threaded half nut and a stationary threaded rod enables the table top to be locked in place once a desired height is achieved.
Type:
Grant
Filed:
December 3, 1991
Date of Patent:
March 1, 1994
Assignee:
Westinghouse Electric Corp.
Inventors:
John J. Rizzi, Joseph J. Smith, II, Howard P. Greene, Jr.
Abstract: An adjustable arm for a chair and the like whereby the arm may be adjusted vertically within a plurality of incrementally spaced positions. The adjustable arm includes an actuator, a locking lever and a second lever located and mounted between the actuator and the locking lever. The second lever interacts with the actuator and the locking lever and has a pivot point for translating travel of the actuator to travel of the locking lever with ease and a minimum of effort on the part the user. The first lever includes a latch that coacts with predeterminately spaced grooves of a rack, thereby enabling the user to lock the arm into one of various vertical positions, easily and effortlessly.