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US 5,374,102 AGranted
Chair assembly for vehicle
AssigneeBaultar Inc.
InventorsBruno Archambault, Andre Albert, Francois Lavoie, Mario Maltais
Life of this patent
Estimating the term…
Abstract
A chair assembly for use in a vehicle such as a locomotive, having a height adjustable base which is free of any wobble and shaking motion, whether being raised, lowered or in use by a driver. The chair also has lateral movement capacity as well as fore-aft or side-aft movement relative to the base. A footrest adjustable by the feet of the driver is further provided.
Claims23
A chair assembly for use in a vehicle, said assembly comprising:
- a chair having a seat and a backrest;
- and
- a chair supporting height-adjustable base including mounting means to provide rotation, smooth raising and smooth lowering of said chair whenever desired and effective immobility of said chair in any given position, whereby said chair is wobble and vibration free at all times,
- wherein said mounting means comprises:
- a support bracket adapted to be secured to said vehicle;
- an uppermost plate on which said chair is mounted;
- a first cylindrical member secured to the center of said plate and extending downwardly therefrom;
- a power cylinder sized to fit precisely into said first cylindrical member, said power cylinder having a lower end bearing onto a horizontal portion of the support bracket, and an upper end bearing onto said uppermost plate;
- means to operate said power cylinder from the chair to raise and lower said chair;
- a second cylindrical member into which said first cylindrical member precisely fits in a rotatable manner;
- means to retain the second cylindrical member from slipping downwardly relative to the first cylindrical member;
- a third cylindrical member attached to an upper portion of said bracket and in which said second cylindrical member is held in a sliding yet non-rotatable manner;
- and
- means to releasably lock the uppermost plate to said non-rotatably held second cylindrical member to prevent rotation of the chair relative to the base whenever desired.
11 more elements
A chair assembly for use in a vehicle, said assembly comprising:
- a chair having a seat and a backrest;
- a chair supporting height-adjustable base including mounting means to provide rotation, smooth raising and smooth lowering of said chair whenever desired and effective immobility of said chair in any given position whereby said chair is wobble and vibration free at all times;
- a foot rest comprising a foot support, said footrest being vertically adjustable by way of an adjustment means comprising:
- a pair of arms having lower ends pivotally attached to a support bracket adapted to be secured to said vehicle, and upper ends attached to the foot support;
- and
- a power cylinder having one end pivotally secured to said support bracket and another end secured to said foot support, said power cylinder being actuable by a button located in the foot support and connected to a switch means,
- whereby one can raise or lower said footrest by depressing said button with a foot and by pushing against the said footrest, respectively.
4 more elements
A chair assembly for use in a vehicle, said assembly comprising:
- a chair having a seat and a backrest;
- a chair supporting height-adjustable base including mounting means to provide rotation, smooth raising and smooth lowering of said chair whenever desired and effective immobility of said chair in any given position, whereby said chair is wobble and vibration free at all times;
- a slide plate that is part of said mounting means, said slide plate having rollers mounted thereon for lateral rotation;
- a chair carriage to which is attached said chair, said carriage being slidably mounted onto said slide plate and comprising a pair of laterally extending channels in which the rollers of the carriage are adapted to roll;
- and
- lock means to releasably lock said carriage relative to said slide plate in any desired position, said lock means comprising:
- an elongated bar disposed in one of said channels close to the rollers rolling in said one channel, said elongated bar having a central threaded hole;
- and
- a long shaft journaled in said carriage in a transversal direction, said shaft having a threaded portion at one end thereof, that engages said threaded hole,
- whereby rotating the shaft in one direction locks said elongated bar against said rollers to lock said carriage to said slide plate.
7 more elements
Dependencies are inferred from the claim text.