The most common material is polyester. 8. 1. 5 is a partial elevational view showing the rear 1 o plunger support wall formed in the base; FIG. Shoulder portions 41, 42 extend rearwardly of wall 62 and terminate at the rear thereof in a downwardly depending wall portion 45, 46. Key way 30 includes a plurality of pairs of laterally spaced support rail segments, such as segments 31, 32, 33 and 34 shown in Fig. "For a motor vehicle, boat, or aircraft." A car seat for installation on a seat cushion of a vehicle, via a seat belt associated with said vehicle, the car seat comprising a main body defining a seating area, a seat base supporting the main body, a vertically movable support member for engagement with a portion of said seat base at least two locations to permit vertical adjustment of said portion of said seat base relative to said vehicle seat cushion, the support member providing support between said seat base and said vehicle seat cushion, and means for releasably securing said support member to said portion of said seat base. Some car seat systems are set up with a battery-powered automatic control to adjust how the seat sits in the car. The car seat of claim 11, wherein the plunger is spring-biased. Accordingly, the present invention provides a car seat for installation on a seat cushion of a vehicle, via a seat belt associated with said vehicle, the car seat comprising a main body defining a seating area, a seat base supporting the main body, a vertically movable support member for engagement with a portion of said seat base at at least two locations to permit vertical adjustment of said portion of said seat base relative to said vehicle seat cushion, the support member providing support between said seat base and said vehicle seat cushion, and means for releasably securing said support member to said portion of said seat base. 1-3, support member 15 is provided with a centrally located compound plunger key way generally 5 designated with reference numeral 30. The separation distance between facing inner edges of each pair of support segments, such as segments 31, 32 is sufficiently great to provide clearance for a stem 1o portion of plunger 25 in order to permit the support member to be manipulated vertically upwardly and downwardly when withdrawn outwardly of body 10 in the direction of arrow 26. 6;and FIG. Some car seat systems are set up with a battery-powered automatic control to adjust how the seat sits in the car. Anti-submarine seating is a safety feature that may be more important for the front seats than the rear seats. You should be able to pick up your foot when operating the pedals without any discomfort. The car seat of claim 16, wherein the plunger comprises a forward portion including the mating surfaces and a stem portion extending rearwardly of said forward portion, the stem portion slidingly arranged in a vertical stem channel defined between the pairs of support rail segments. The main body of spring 55 is received about retaining portion 48;while the rear end of spring 55 is captured by support 49. Also extending rearwardly of wall 62 is a stem portion having a forward guide vane 71 and a rear guide vane 72. [citation needed]. In suitably equipped cars, seats and mirrors can be adjusted using electric controls. 19. 10-12 are cross-sectional views of the locking plunger taken along lines 10-10 through 12-12, respectively, of FIG. The upper section of the seat backrest, may be, This page was last edited on 31 August 2020, at 01:07. 7 Jul. This article is about fixed automobile seats.